Image-Text-to-Text
GGUF
llama.cpp
qwen3_8
reasoning
efficient-thinking
token-efficient
post-training
terminal-bench
imatrix
conversational
Instructions to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with libraries, inference providers, notebooks, and local apps. Follow these links to get started.
- Notebooks
- Google Colab
- Kaggle
- Local Apps Settings
- llama.cpp
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with llama.cpp:
Install (macOS, Linux)
curl -LsSf https://llama.app/install.sh | sh # Start a local OpenAI-compatible server with a web UI: llama serve -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M # Run inference directly in the terminal: llama cli -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Install from WinGet (Windows)
winget install llama.cpp # Start a local OpenAI-compatible server with a web UI: llama serve -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M # Run inference directly in the terminal: llama cli -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Use pre-built binary
# Download pre-built binary from: # https://github.com/ggerganov/llama.cpp/releases # Start a local OpenAI-compatible server with a web UI: ./llama-server -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M # Run inference directly in the terminal: ./llama-cli -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Build from source code
git clone https://github.com/ggerganov/llama.cpp.git cd llama.cpp cmake -B build cmake --build build -j --target llama-server llama-cli # Start a local OpenAI-compatible server with a web UI: ./build/bin/llama-server -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M # Run inference directly in the terminal: ./build/bin/llama-cli -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Use Docker
docker model run hf.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
- Llama new
- LM Studio
- Jan
- vLLM
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with vLLM:
Install from pip and serve model
# Install vLLM from pip: pip install vllm # Start the vLLM server: vllm serve "ukisai/Swift-1.5-Qwen3.8-27B-GGUF" # Call the server using curl (OpenAI-compatible API): curl -X POST "http://localhost:8000/v1/chat/completions" \ -H "Content-Type: application/json" \ --data '{ "model": "ukisai/Swift-1.5-Qwen3.8-27B-GGUF", "messages": [ { "role": "user", "content": [ { "type": "text", "text": "Describe this image in one sentence." }, { "type": "image_url", "image_url": { "url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg" } } ] } ] }'Use Docker
docker model run hf.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
- Ollama
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with Ollama:
ollama run hf.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
- Unsloth Desktop
- Pi
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with Pi:
Start the llama.cpp server
# Install llama.cpp: brew install llama.cpp # Start a local OpenAI-compatible server: llama serve -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Configure the model in Pi
# Install Pi: npm install -g @earendil-works/pi-coding-agent # Add to ~/.pi/agent/models.json: { "providers": { "llama-cpp": { "baseUrl": "http://localhost:8080/v1", "api": "openai-completions", "apiKey": "none", "models": [ { "id": "ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M" } ] } } }Run Pi
# Start Pi in your project directory: pi
- Docker Model Runner
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with Docker Model Runner:
docker model run hf.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
- Lemonade
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with Lemonade:
Pull the model
# Download Lemonade from https://lemonade-server.ai/ lemonade pull ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Run and chat with the model
lemonade run user.Swift-1.5-Qwen3.8-27B-GGUF-Q4_K_M
List all available models
lemonade list
- Hermes Agent
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with Hermes Agent:
Start the llama.cpp server
# Install llama.cpp: brew install llama.cpp # Start a local OpenAI-compatible server: llama serve -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Configure Hermes
# Install Hermes: curl -fsSL https://hermes-agent.nousresearch.com/install.sh | bash hermes setup # Point Hermes at the local server: hermes config set model.provider custom hermes config set model.base_url http://127.0.0.1:8080/v1 hermes config set model.default ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Run Hermes
hermes
- Atomic Chat
- OpenClaw
How to use ukisai/Swift-1.5-Qwen3.8-27B-GGUF with OpenClaw:
Start the llama.cpp server
# Install llama.cpp: brew install llama.cpp # Start a local OpenAI-compatible server: llama serve -hf ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M
Configure OpenClaw
# Install OpenClaw: npm install -g openclaw@latest # Register the local server and set it as the default model: openclaw onboard --non-interactive --mode local \ --auth-choice custom-api-key \ --custom-base-url http://127.0.0.1:8080/v1 \ --custom-model-id "ukisai/Swift-1.5-Qwen3.8-27B-GGUF:Q4_K_M" \ --custom-provider-id llama-cpp \ --custom-compatibility openai \ --custom-text-input \ --accept-risk \ --skip-health
Run OpenClaw
openclaw agent --local --agent main --message "Hello from Hugging Face"
Commit ·
ed91a95
0
Parent(s):
initial release
Browse files- .gitattributes +59 -0
- LICENSE +233 -0
- README.md +367 -0
- Swift-1.5-Qwen3.8-27B-IQ2_M.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ2_S.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ2_XS.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ2_XXS.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ3_M.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ3_XS.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ3_XXS.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ4_NL.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-IQ4_XS.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q2_K.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q3_K_L.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q3_K_M.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q3_K_S.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q4_K_L.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q4_K_M.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q4_K_S.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q5_K_M.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q5_K_S.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q6_K.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q6_K_L.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q6_K_S.gguf +3 -0
- Swift-1.5-Qwen3.8-27B-Q8_0.gguf +3 -0
- swift-1.5-planet-demo.mp4 +3 -0
- ukisai-banner.png +3 -0
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LICENSE
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Swift Open License v1.0
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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1. Definitions.
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"License" shall mean the terms and conditions for use, reproduction, and
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distribution as defined by this document.
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"Licensor" shall mean UkisAI.
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"Legal Entity" shall mean the union of the acting entity and all other entities
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that control, are controlled by, or are under common control with that entity.
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For the purposes of this definition, "control" means (i) the power, direct or
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indirect, to cause the direction or management of such entity, whether by
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contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the
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outstanding shares, or (iii) beneficial ownership of such entity.
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| 19 |
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README.md
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|
| 1 |
+
---
|
| 2 |
+
license: other
|
| 3 |
+
license_name: swift-open-license-1.0
|
| 4 |
+
license_link: https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b/blob/main/LICENSE
|
| 5 |
+
library_name: gguf
|
| 6 |
+
pipeline_tag: image-text-to-text
|
| 7 |
+
tags:
|
| 8 |
+
- gguf
|
| 9 |
+
- llama.cpp
|
| 10 |
+
- qwen3_8
|
| 11 |
+
- reasoning
|
| 12 |
+
- efficient-thinking
|
| 13 |
+
- token-efficient
|
| 14 |
+
- post-training
|
| 15 |
+
- terminal-bench
|
| 16 |
+
base_model: ukisai/Swift-1.5-Qwen3.8-27b
|
| 17 |
+
base_model_relation: quantized
|
| 18 |
+
---
|
| 19 |
+
|
| 20 |
+
<div align="center">
|
| 21 |
+
<a href="https://ukisai.com"><img src="ukisai-banner.png" alt="UkisAI" style="width:100%;max-width:100%;height:auto;display:block;margin-bottom:0.6em;" /></a>
|
| 22 |
+
<div style="display:flex;justify-content:center;gap:0.6em;margin-bottom:1em;">
|
| 23 |
+
<a href="https://ukisai.com"><strong>Website</strong></a> •
|
| 24 |
+
<a href="https://ukisai.com/products/swift"><strong>Learn more</strong></a> •
|
| 25 |
+
<a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF"><strong>GGUF</strong></a> •
|
| 26 |
+
<a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27B-GSQ-RCO-GGUF"><strong>GSQ-RCO GGUF</strong></a> •
|
| 27 |
+
<a href="#evaluation"><strong>Evaluation</strong></a> •
|
| 28 |
+
<a href="#license-and-access"><strong>Enterprise licensing</strong></a>
|
| 29 |
+
</div>
|
| 30 |
+
</div>
|
| 31 |
+
|
| 32 |
+
# Swift 1.5 Qwen3.8-27B
|
| 33 |
+
|
| 34 |
+
**GGUF quantizations.** Derived directly from [Swift 1.5](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b) with [llama.cpp](https://github.com/ggml-org/llama.cpp). Run a chosen quantization tier with a current llama.cpp-compatible runtime such as `llama-server`.
|
| 35 |
+
|
| 36 |
+
Swift 1.5 Qwen3.8-27B is UkisAI's reasoning-efficient derivative of [Qwen3.8-27B](https://huggingface.co/Qwen/Qwen3.8-27B).
|
| 37 |
+
It uses **58.5% fewer thinking tokens** while scoring **0.35% higher** than the base, for a **9.18× speed-up** on several tasks.
|
| 38 |
+
|
| 39 |
+
Swift 1.5 is a direct upgrade from [Swift 1.0](https://huggingface.co/ukisai/Swift-Qwen3.8-27b), our model with 350k+ downloads, delivering stronger overall performance than both base and Swift 1.0 in various tasks, especially coding and agentic, while using fewer thinking tokens. We accomplished that by scaling up the post-training (RL and OPD) from the previous version.
|
| 40 |
+
|
| 41 |
+
## Demo
|
| 42 |
+
|
| 43 |
+
We gave base Qwen3.8-27B and Swift 1.5 27B the same prompt:
|
| 44 |
+
|
| 45 |
+
> create a 3d little planet globe where I (player can walk around) and it has all these biomes to explore, the globe doesn't have to be too big, but still fun to go around. It's about a boy scout who is camping and goes around exploring.
|
| 46 |
+
|
| 47 |
+
<video src="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF/resolve/main/swift-1.5-planet-demo.mp4" controls autoplay muted loop playsinline style="width:100%;height:auto;border-radius:12px;"></video>
|
| 48 |
+
|
| 49 |
+
Try the game yourself here: [https://ukisai.com/swift-games/27b](https://ukisai.com/swift-games/27b)
|
| 50 |
+
|
| 51 |
+
Base Qwen3.8-27B took 104.6 minutes to build its game. Swift 1.5 took 11.39 minutes.
|
| 52 |
+
|
| 53 |
+
## Training approach
|
| 54 |
+
|
| 55 |
+
We made Swift efficient by figuring out which tokens were linked to pathological overthinking and penalizing them without "attacking" the reasoning length directly then regained the accuracy with RL and OPD, leading to "compressed" token usage while maintaining accuracy.
|
| 56 |
+
Swift 1.5 was made from [Swift 1.0](https://huggingface.co/ukisai/Swift-Qwen3.8-27b), on whom we scaled up the post-training methods that previously improved Swift1.0 model performance, this time with the main
|
| 57 |
+
focus on long-horizon, agentic, and coding tasks, as seen in the LiveCodeBench and Terminal Bench 2.1 improvements. Our training data is viewable here: https://huggingface.co/datasets/ukisai/Qwen3.8-27B-multi-turn-agent-sft albeit it is not used out of the box, but rather re-sampled, turned into proper RL environments etc.
|
| 58 |
+
|
| 59 |
+
## Evaluation
|
| 60 |
+
|
| 61 |
+
The external results below compare **Qwen3.8-27B**, the foundation base model,
|
| 62 |
+
and **Swift 1.5**. Both models use
|
| 63 |
+
the same saved evaluation protocols, and all scores are reported as final aggregate
|
| 64 |
+
percentages.
|
| 65 |
+
|
| 66 |
+
<style>
|
| 67 |
+
.swift15-table { width:100%; table-layout:fixed; border-collapse:separate; border-spacing:0; overflow:hidden; border:1px solid #27344A; border-radius:20px; background:#0D111B; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; font-size:14px; color:#BFBDBD; }
|
| 68 |
+
.swift15-table th { padding:13px 8px; text-align:center; font-weight:700; color:#AEB5C7; background:#0D111B; border-right:1px solid #27344A; border-bottom:1px solid #27344A; }
|
| 69 |
+
.swift15-table td { padding:14px 8px; text-align:center; color:#BFBDBD; background:#0D111B; border-right:1px solid #27344A; border-bottom:1px solid #27344A; vertical-align:middle; overflow-wrap:break-word; }
|
| 70 |
+
.swift15-table tr > :last-child { border-right:0; }
|
| 71 |
+
.swift15-table tbody tr:last-child td { border-bottom:0; }
|
| 72 |
+
.swift15-table .benchmark-heading { color:#B7BDCD; background:#0D111B; border-bottom:3px solid #7D45B5; }
|
| 73 |
+
.swift15-table .score-heading { color:#F0C5FF; background:#52239E; border-bottom:3px solid #7D45B5; }
|
| 74 |
+
.swift15-table .tokens-heading, .swift15-table .median-heading { color:#D4E8FF; background:#304FC2; border-bottom:3px solid #5687E6; }
|
| 75 |
+
.swift15-table .change-heading { color:#61B9FF; background:#101D2D; border-bottom:3px solid #5687E6; }
|
| 76 |
+
.swift15-table .change { color:#61B9FF; background:#101D2D; font-weight:700; }
|
| 77 |
+
.swift15-table .gain { color:#DDA8FF; background:#171127; font-weight:700; }
|
| 78 |
+
.swift15-table .model { padding-left:18px; text-align:left; color:#FFFFFF; font-weight:600; }
|
| 79 |
+
.swift15-table strong { color:#FFFFFF; }
|
| 80 |
+
.swift15-table .section { padding:12px 18px; text-align:left; color:#B489FF; background:#2A2541; font-weight:700; letter-spacing:.08em; text-transform:uppercase; border-top:1px solid #3A3159; border-bottom:1px solid #3A3159; }
|
| 81 |
+
.swift15-table .swift15 { background:#171127; }
|
| 82 |
+
.swift15-table thead tr:nth-child(2) .swift15 { color:#D3A0FF; }
|
| 83 |
+
.swift15-table .detail { color:#8C94A8; font-size:12px; font-weight:500; }
|
| 84 |
+
.swift15-table.swift15-compact { display:table !important; width:100% !important; table-layout:fixed !important; }
|
| 85 |
+
|
| 86 |
+
@media (max-width: 640px) {
|
| 87 |
+
.swift15-table { display:block !important; width:100% !important; max-width:100%; overflow-x:auto !important; -webkit-overflow-scrolling:touch; table-layout:auto !important; }
|
| 88 |
+
.swift15-table th, .swift15-table td { min-width:104px; }
|
| 89 |
+
.swift15-table th:first-child, .swift15-table td:first-child { min-width:170px; }
|
| 90 |
+
}
|
| 91 |
+
</style>
|
| 92 |
+
|
| 93 |
+
<table class="swift15-table">
|
| 94 |
+
<thead>
|
| 95 |
+
<tr>
|
| 96 |
+
<th class="benchmark-heading" rowspan="2" style="width:32%;text-align:left;padding-left:18px;vertical-align:bottom;">Benchmark</th>
|
| 97 |
+
<th class="score-heading" colspan="2">Final score</th>
|
| 98 |
+
<th class="tokens-heading" colspan="3">Mean tokens</th>
|
| 99 |
+
<th class="median-heading">Median tokens</th>
|
| 100 |
+
</tr>
|
| 101 |
+
<tr>
|
| 102 |
+
<th>Qwen3.8</th>
|
| 103 |
+
<th class="swift15">Swift 1.5</th>
|
| 104 |
+
<th>Qwen3.8</th>
|
| 105 |
+
<th class="swift15">Swift 1.5</th>
|
| 106 |
+
<th class="change-heading">Reduction</th>
|
| 107 |
+
<th class="change-heading">Reduction</th>
|
| 108 |
+
</tr>
|
| 109 |
+
</thead>
|
| 110 |
+
<tbody>
|
| 111 |
+
<tr><td class="section" colspan="7">General reasoning</td></tr>
|
| 112 |
+
<tr><td class="model">GPQA-Diamond</td><td>88.28%</td><td class="swift15"><strong>88.59%</strong></td><td>15,014</td><td class="swift15">8,717</td><td class="change">↓ 41.9%</td><td class="change">↓ 58.5%</td></tr>
|
| 113 |
+
<tr><td class="model">C-Eval</td><td>90.00%</td><td class="swift15"><strong>90.92%</strong></td><td>1,492</td><td class="swift15">819</td><td class="change">↓ 45.1%</td><td class="change">↓ 16.9%</td></tr>
|
| 114 |
+
<tr><td class="model">IFBench</td><td><strong>73.53%</strong></td><td class="swift15">72.07%</td><td>8,052</td><td class="swift15">4,955</td><td class="change">↓ 38.5%</td><td class="change">↓ 47.3%</td></tr>
|
| 115 |
+
<tr><td class="model">ERQA</td><td><strong>67.45%</strong></td><td class="swift15">65.40%</td><td>4,137</td><td class="swift15">1,906</td><td class="change">↓ 53.9%</td><td class="change">↓ 56.2%</td></tr>
|
| 116 |
+
<tr><td class="section" colspan="7">Mathematics</td></tr>
|
| 117 |
+
<tr><td class="model">AIME 2026</td><td><strong>98.67%</strong></td><td class="swift15">96.00%</td><td>22,014</td><td class="swift15">13,203</td><td class="change">↓ 40.0%</td><td class="change">↓ 48.5%</td></tr>
|
| 118 |
+
<tr><td class="model">HMMT November 2025</td><td><strong>99.33%</strong></td><td class="swift15">97.33%</td><td>22,032</td><td class="swift15">14,957</td><td class="change">↓ 32.1%</td><td class="change">↓ 47.8%</td></tr>
|
| 119 |
+
<tr><td class="section" colspan="7">Coding</td></tr>
|
| 120 |
+
<tr><td class="model">LiveCodeBench v6</td><td>76.76%</td><td class="swift15"><strong>81.71%</strong></td><td>11,184</td><td class="swift15">8,448</td><td class="change">↓ 24.5%</td><td class="change">↓ 46.3%</td></tr>
|
| 121 |
+
<tr><td class="section" colspan="7">Agent tasks</td></tr>
|
| 122 |
+
<tr><td class="model">Terminal-Bench 2.1</td><td>69.21%</td><td class="swift15"><strong>72.13%</strong></td><td>52,265</td><td class="swift15">43,733</td><td class="change">↓ 16.3%</td><td class="change">↓ 0.1%</td></tr>
|
| 123 |
+
</tbody>
|
| 124 |
+
</table>
|
| 125 |
+
|
| 126 |
+
Scores are final five-repeat aggregates under matched evaluation protocols. Mean-token
|
| 127 |
+
columns report reasoning tokens per trial; Terminal-Bench sums reasoning across agent calls.
|
| 128 |
+
|
| 129 |
+
<details>
|
| 130 |
+
<summary><strong>Benchmark methodology and reproduction settings</strong></summary>
|
| 131 |
+
|
| 132 |
+
<p style="font-size:13px;line-height:1.5;margin:8px 0;"><strong>Serving:</strong> BF16 · vLLM 0.27.1 · Qwen3 parser · context 262,144 · thinking xhigh.<br>
|
| 133 |
+
<strong>Sampling:</strong> temperature 1.0 · top_p 0.95 · top_k 20 · min_p 0 · presence_penalty 0 · repetition_penalty 1.<br>
|
| 134 |
+
<strong>Benchmarks:</strong> averages over five seeds (0–4) per model; five trials per task for Terminal-Bench, base and Swift 1.5 served at context 131,072 on the same Harbor build.</p>
|
| 135 |
+
|
| 136 |
+
<table style="display:table;width:100%;border-collapse:collapse;font-size:13px;line-height:1.3;margin:8px 0;">
|
| 137 |
+
<thead><tr><th style="padding:4px 8px;text-align:left;">Benchmark</th><th style="padding:4px 8px;text-align:right;">Output cap</th></tr></thead>
|
| 138 |
+
<tbody>
|
| 139 |
+
<tr><td style="padding:3px 8px;">GPQA-Diamond</td><td style="padding:3px 8px;text-align:right;">100,000</td></tr>
|
| 140 |
+
<tr><td style="padding:3px 8px;">C-Eval</td><td style="padding:3px 8px;text-align:right;">16,384</td></tr>
|
| 141 |
+
<tr><td style="padding:3px 8px;">IFBench</td><td style="padding:3px 8px;text-align:right;">81,920</td></tr>
|
| 142 |
+
<tr><td style="padding:3px 8px;">ERQA</td><td style="padding:3px 8px;text-align:right;">100,000</td></tr>
|
| 143 |
+
<tr><td style="padding:3px 8px;">AIME 2026</td><td style="padding:3px 8px;text-align:right;">250,000</td></tr>
|
| 144 |
+
<tr><td style="padding:3px 8px;">HMMT November 2025</td><td style="padding:3px 8px;text-align:right;">250,000</td></tr>
|
| 145 |
+
<tr><td style="padding:3px 8px;">LiveCodeBench v6</td><td style="padding:3px 8px;text-align:right;">32,768</td></tr>
|
| 146 |
+
<tr><td style="padding:3px 8px;">Terminal-Bench 2.1</td><td style="padding:3px 8px;text-align:right;">Agent/task limits</td></tr>
|
| 147 |
+
</tbody>
|
| 148 |
+
</table>
|
| 149 |
+
|
| 150 |
+
</details>
|
| 151 |
+
|
| 152 |
+
## Efficiency across reasoning efforts
|
| 153 |
+
|
| 154 |
+
Qwen3.8's `reasoning_effort` setting lets users choose how much the model thinks.
|
| 155 |
+
For Swift 1.5 to be useful across these settings, it needs to reduce thinking while
|
| 156 |
+
keeping accuracy close to the base. We therefore tested `xhigh`, `medium`, and `low`:
|
| 157 |
+
thinking-token savings persist at every level.
|
| 158 |
+
|
| 159 |
+
<table class="swift15-table swift15-compact">
|
| 160 |
+
<thead>
|
| 161 |
+
<tr>
|
| 162 |
+
<th class="benchmark-heading" style="width:34%;text-align:left;padding-left:18px;">Reasoning effort</th>
|
| 163 |
+
<th class="score-heading" style="width:22%;">Qwen3.8</th>
|
| 164 |
+
<th class="score-heading" style="width:22%;">Swift 1.5</th>
|
| 165 |
+
<th class="tokens-heading" style="width:22%;">Mean thinking reduction</th>
|
| 166 |
+
</tr>
|
| 167 |
+
</thead>
|
| 168 |
+
<tbody>
|
| 169 |
+
<tr><td class="model">Xhigh</td><td>88.28%</td><td class="swift15"><strong>88.59%</strong></td><td class="change">↓ 41.9%</td></tr>
|
| 170 |
+
<tr><td class="model">Medium</td><td><strong>84.14%</strong></td><td class="swift15">82.22%</td><td class="change">↓ 24.8%</td></tr>
|
| 171 |
+
<tr><td class="model">Low</td><td>84.04%</td><td class="swift15"><strong>84.85%</strong></td><td class="change">↓ 28.7%</td></tr>
|
| 172 |
+
</tbody>
|
| 173 |
+
</table>
|
| 174 |
+
|
| 175 |
+
At `low`, Swift 1.5 scores above the base while using about 29% fewer thinking tokens.
|
| 176 |
+
|
| 177 |
+
## Quantized Swift 1.5 models
|
| 178 |
+
|
| 179 |
+
| Format | Repository | Runtime |
|
| 180 |
+
| --- | --- | --- |
|
| 181 |
+
| GGUF | [Swift-1.5-Qwen3.8-27B-GGUF](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27B-GGUF) | llama.cpp |
|
| 182 |
+
| GSQ-RCO GGUF (compact 2–3 bit) | [Swift-1.5-Qwen3.8-27B-GSQ-RCO-GGUF](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27B-GSQ-RCO-GGUF) | llama.cpp |
|
| 183 |
+
| AWQ INT4 (W4A16) | [Swift-1.5-Qwen3.8-27b-W4A16-AWQ](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AWQ) | vLLM (`compressed-tensors`) |
|
| 184 |
+
| AutoRound INT4 (W4A16) | [Swift-1.5-Qwen3.8-27b-W4A16-AutoRound](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AutoRound) | vLLM (`auto-round`) |
|
| 185 |
+
| AWQ + GPTQ INT4 (W4A16) | [Swift-1.5-Qwen3.8-27b-INT4](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-INT4) | vLLM (`compressed-tensors`) |
|
| 186 |
+
| NVFP4 | [Swift-1.5-Qwen3.8-27b-NVFP4](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-NVFP4) | NVIDIA Blackwell |
|
| 187 |
+
| AMD Quark FP8 (W8A8) | [Swift-1.5-Qwen3.8-27b-Quark-FP8-dynamic-AMD](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-Quark-FP8-dynamic-AMD) | AMD Quark |
|
| 188 |
+
| MLX 5-bit | [Swift-1.5-5bit-MLX](https://huggingface.co/ukisai/Swift-1.5-5bit-MLX) | Apple MLX |
|
| 189 |
+
| MLX 4-bit | [Swift-1.5-4bit-MLX](https://huggingface.co/ukisai/Swift-1.5-4bit-MLX) | Apple MLX |
|
| 190 |
+
| MLX 3-bit (text only) | [Swift-1.5-3bit-MLX-TextOnly](https://huggingface.co/ukisai/Swift-1.5-3bit-MLX-TextOnly) | Apple MLX |
|
| 191 |
+
|
| 192 |
+
These results evaluate the merged Swift 1.5 checkpoint and three INT4 exports on
|
| 193 |
+
**GPQA-Diamond (198 questions), IFBench (300 prompts), and AIME 2026 (30 problems)**.
|
| 194 |
+
Each model completed the full datasets with **one sample per prompt, seed 0, and
|
| 195 |
+
zero request errors**. This is a single-seed evaluation, separate from the
|
| 196 |
+
five-repeat BF16 release results above.
|
| 197 |
+
|
| 198 |
+
The Qwen-base columns use the **saved seed/sample 0 runs**.
|
| 199 |
+
Quantization recipes and serving settings differ from the new Swift 1.5 runs,
|
| 200 |
+
so these are reference comparisons rather than a controlled measurement of
|
| 201 |
+
the Swift adaptation. Token reductions below are recomputed from those same
|
| 202 |
+
reference samples.
|
| 203 |
+
|
| 204 |
+
<table class="swift15-table" style="display:table;width:100%;table-layout:fixed;">
|
| 205 |
+
<thead><tr>
|
| 206 |
+
<th class="benchmark-heading" style="width:32%;text-align:left;padding-left:18px;">Benchmark / Swift 1.5 quantization</th>
|
| 207 |
+
<th class="score-heading" style="width:16%;">Qwen base<br>accuracy</th>
|
| 208 |
+
<th class="score-heading" style="width:16%;">Swift 1.5 quant<br>accuracy</th>
|
| 209 |
+
<th class="tokens-heading" style="width:18%;">Mean token reduction</th>
|
| 210 |
+
<th class="median-heading" style="width:18%;">Median token reduction</th>
|
| 211 |
+
</tr></thead>
|
| 212 |
+
<tbody>
|
| 213 |
+
<tr><td class="model">GPQA-Diamond<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AWQ">AWQ INT4</a></span></td><td>86.36%</td><td class="swift15">88.38%</td><td class="change">↓ 51.5%</td><td class="change">↓ 64.4%</td></tr>
|
| 214 |
+
<tr><td class="model">GPQA-Diamond<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AutoRound">AutoRound INT4</a></span></td><td>86.36%</td><td class="swift15">89.39%</td><td class="change">↓ 50.5%</td><td class="change">↓ 57.8%</td></tr>
|
| 215 |
+
<tr><td class="model">GPQA-Diamond<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-INT4">AWQ + GPTQ INT4</a></span></td><td>86.36%</td><td class="swift15">90.91%</td><td class="change">↓ 45.8%</td><td class="change">↓ 64.4%</td></tr>
|
| 216 |
+
<tr><td class="model">IFBench<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AWQ">AWQ INT4</a></span></td><td>72.00%</td><td class="swift15">72.00%</td><td class="change">↓ 36.9%</td><td class="change">↓ 49.3%</td></tr>
|
| 217 |
+
<tr><td class="model">IFBench<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AutoRound">AutoRound INT4</a></span></td><td>72.00%</td><td class="swift15">69.33%</td><td class="change">↓ 29.3%</td><td class="change">↓ 39.2%</td></tr>
|
| 218 |
+
<tr><td class="model">IFBench<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-INT4">AWQ + GPTQ INT4</a></span></td><td>72.00%</td><td class="swift15">70.00%</td><td class="change">↓ 31.8%</td><td class="change">↓ 52.7%</td></tr>
|
| 219 |
+
<tr><td class="model">AIME 2026<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AWQ">AWQ INT4</a></span></td><td>70.00%</td><td class="swift15">86.67%</td><td class="change">↓ 29.2%</td><td class="change">↓ 36.2%</td></tr>
|
| 220 |
+
<tr><td class="model">AIME 2026<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-W4A16-AutoRound">AutoRound INT4</a></span></td><td>76.67%</td><td class="swift15">83.33%</td><td class="change">↓ 17.7%</td><td class="change">↓ 32.4%</td></tr>
|
| 221 |
+
<tr><td class="model">AIME 2026<br><span class="detail"><a href="https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b-INT4">AWQ + GPTQ INT4</a></span></td><td>76.67%</td><td class="swift15">83.33%</td><td class="change">↓ 22.4%</td><td class="change">↓ 34.0%</td></tr>
|
| 222 |
+
</tbody>
|
| 223 |
+
</table>
|
| 224 |
+
|
| 225 |
+
**AIME scoring:** truncated responses count as incorrect for both columns.
|
| 226 |
+
|
| 227 |
+
The AMD Quark INT4 and FP8 exports have separate sanity evaluations; completed
|
| 228 |
+
results on these three reasoning benchmarks are not available for them.
|
| 229 |
+
|
| 230 |
+
<details>
|
| 231 |
+
<summary><strong>Quantized evaluation settings and BF16 reference</strong></summary>
|
| 232 |
+
|
| 233 |
+
**Serving:** vLLM 0.29.0, tensor parallelism 1, eager execution, BF16 activations,
|
| 234 |
+
context 131,072, template-default thinking without an effort override. The
|
| 235 |
+
AWQ + GPTQ export uses FP8 KV cache; BF16, AWQ, and AutoRound use auto KV dtype.
|
| 236 |
+
**Sampling:** temperature 1, top-p 0.95, top-k 20, min-p 0, presence penalty 0,
|
| 237 |
+
repetition penalty 1, seed 0. Output caps: GPQA 100,000, IFBench 81,920,
|
| 238 |
+
AIME 32,768. IFBench uses official strict prompt-level scoring.
|
| 239 |
+
|
| 240 |
+
GPQA token counts cover re-tokenized reasoning; IFBench and AIME count the
|
| 241 |
+
full generated response. Statistics include all responses, including truncations; medians
|
| 242 |
+
use the midpoint of the two central values when the sample count is even.
|
| 243 |
+
|
| 244 |
+
Saved Qwen references: W4A16 for GPQA and IFBench; Qwen AWQ for the
|
| 245 |
+
AWQ AIME row; Qwen W4A16 for the AutoRound and AWQ + GPTQ AIME rows. The
|
| 246 |
+
latter is a W4A16 reference for AutoRound, not an AutoRound base run.
|
| 247 |
+
The new runs do not reproduce the original software stack.
|
| 248 |
+
|
| 249 |
+
The fresh Swift 1.5 BF16 reference and all quantized exports scored as follows
|
| 250 |
+
under this single-seed protocol:
|
| 251 |
+
|
| 252 |
+
| Model | GPQA-Diamond | IFBench strict | AIME 2026 |
|
| 253 |
+
| --- | ---: | ---: | ---: |
|
| 254 |
+
| Swift 1.5 BF16 | 91.41% | 72.00% | 86.67% |
|
| 255 |
+
| AWQ INT4 | 88.38% | 72.00% | 86.67% |
|
| 256 |
+
| AutoRound INT4 | 89.39% | 69.33% | 83.33% |
|
| 257 |
+
| AWQ + GPTQ INT4 | 90.91% | 70.00% | 83.33% |
|
| 258 |
+
|
| 259 |
+
Truncation counts are recorded in the linked evaluation data.
|
| 260 |
+
These single-seed results do not establish
|
| 261 |
+
quality parity or replace the broader multi-seed evaluation.
|
| 262 |
+
|
| 263 |
+
[Verified counts, token statistics, settings, and evidence hashes](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b/blob/main/benchmarks/quantization-20260921.json).
|
| 264 |
+
|
| 265 |
+
</details>
|
| 266 |
+
|
| 267 |
+
## GGUF quantizations
|
| 268 |
+
|
| 269 |
+
<table class="swift15-table" style="display:table;width:100%;table-layout:fixed;">
|
| 270 |
+
<thead><tr>
|
| 271 |
+
<th class="benchmark-heading" style="width:20%;text-align:left;padding-left:18px;white-space:normal;">File</th>
|
| 272 |
+
<th class="score-heading" style="width:12%;white-space:normal;">Size</th>
|
| 273 |
+
<th class="score-heading" style="width:17%;white-space:normal;">KLD wikitext @512</th>
|
| 274 |
+
<th class="tokens-heading" style="width:17%;white-space:normal;">KLD wikitext @32k</th>
|
| 275 |
+
<th class="tokens-heading" style="width:17%;white-space:normal;">99% KLD @32k</th>
|
| 276 |
+
<th class="median-heading" style="width:17%;white-space:normal;">Top-p @32k</th>
|
| 277 |
+
</tr></thead>
|
| 278 |
+
<tbody>
|
| 279 |
+
<tr><td class="model">Q8_0</td><td>29.0 GB</td><td class="swift15">0.0008</td><td class="change">0.0006</td><td class="change">0.005</td><td>98.85%</td></tr>
|
| 280 |
+
<tr><td class="model">Q6_K_L</td><td>25.0 GB</td><td>0.0015</td><td class="change">0.0014</td><td class="change">0.010</td><td>98.16%</td></tr>
|
| 281 |
+
<tr><td class="model">Q6_K</td><td>23.9 GB</td><td>0.0018</td><td class="change">0.0016</td><td class="change">0.014</td><td>98.30%</td></tr>
|
| 282 |
+
<tr><td class="model">Q6_K_S</td><td>22.9 GB</td><td>0.0020</td><td class="change">0.0016</td><td class="change">0.014</td><td>98.24%</td></tr>
|
| 283 |
+
<tr><td class="model">Q5_K_M</td><td>20.9 GB</td><td>0.0052</td><td class="change">0.0061</td><td class="change">0.050</td><td>96.92%</td></tr>
|
| 284 |
+
<tr><td class="model">Q5_K_S</td><td>19.6 GB</td><td>0.0060</td><td class="change">0.0069</td><td class="change">0.058</td><td>96.91%</td></tr>
|
| 285 |
+
<tr><td class="model">Q4_K_L</td><td>18.8 GB</td><td>0.0106</td><td class="change">0.0103</td><td class="change">0.105</td><td>95.79%</td></tr>
|
| 286 |
+
<tr><td class="model">Q4_K_M</td><td>17.4 GB</td><td>0.0137</td><td class="change">0.0134</td><td class="change">0.163</td><td>95.03%</td></tr>
|
| 287 |
+
<tr><td class="model">IQ4_NL</td><td>17.4 GB</td><td>0.0152</td><td class="change">0.0140</td><td class="change">0.175</td><td>95.39%</td></tr>
|
| 288 |
+
<tr><td class="model">Q4_K_S</td><td>16.4 GB</td><td>0.0164</td><td class="change">0.0154</td><td class="change">0.175</td><td>94.84%</td></tr>
|
| 289 |
+
<tr><td class="model">IQ4_XS</td><td>15.5 GB</td><td>0.0179</td><td class="change">0.0173</td><td class="change">0.187</td><td>94.96%</td></tr>
|
| 290 |
+
<tr><td class="model">IQ3_M</td><td>14.9 GB</td><td>0.0410</td><td class="change">0.0380</td><td class="change">0.409</td><td>91.83%</td></tr>
|
| 291 |
+
<tr><td class="model">Q3_K_L</td><td>14.1 GB</td><td>0.0442</td><td class="change">0.0410</td><td class="change">0.415</td><td>91.63%</td></tr>
|
| 292 |
+
<tr><td class="model">Q3_K_M</td><td>13.4 GB</td><td>0.0570</td><td class="change">0.0562</td><td class="change">0.614</td><td>90.30%</td></tr>
|
| 293 |
+
<tr><td class="model">IQ3_XS</td><td>12.8 GB</td><td>0.0583</td><td class="change">0.0885</td><td class="change">1.130</td><td>88.54%</td></tr>
|
| 294 |
+
<tr><td class="model">Q3_K_S</td><td>12.7 GB</td><td>0.0648</td><td class="change">0.0658</td><td class="change">0.712</td><td>89.53%</td></tr>
|
| 295 |
+
<tr><td class="model">IQ3_XXS</td><td>12.3 GB</td><td>0.0742</td><td class="change">0.0844</td><td class="change">0.996</td><td>88.70%</td></tr>
|
| 296 |
+
<tr><td class="model">Q2_K</td><td>10.8 GB</td><td>0.1655</td><td class="change">0.1546</td><td class="change">1.728</td><td>84.00%</td></tr>
|
| 297 |
+
<tr><td class="model">IQ2_M</td><td>10.5 GB</td><td>0.1523</td><td class="change">0.1493</td><td class="change">1.568</td><td>84.17%</td></tr>
|
| 298 |
+
<tr><td class="model">IQ2_S</td><td>9.7 GB</td><td>0.2095</td><td class="change">0.2589</td><td class="change">3.024</td><td>80.58%</td></tr>
|
| 299 |
+
<tr><td class="model">IQ2_XS</td><td>9.1 GB</td><td>0.2433</td><td class="change">0.2622</td><td class="change">2.951</td><td>79.99%</td></tr>
|
| 300 |
+
<tr><td class="model">IQ2_XXS</td><td>8.9 GB</td><td>0.2866</td><td class="change">0.2769</td><td class="change">2.902</td><td>78.48%</td></tr>
|
| 301 |
+
</tbody>
|
| 302 |
+
</table>
|
| 303 |
+
|
| 304 |
+
Mean KL divergence against the Swift 1.5 BF16 source, lower is better. `wikitext @512` is wikitext-2
|
| 305 |
+
test, 100 windows of 512 tokens. `wikitext @32k` is wikitext-2 train, 16 windows of 32,768 tokens, scoring
|
| 306 |
+
only the last 512 tokens of each window, so every scored token sees at least 32k tokens of context.
|
| 307 |
+
`99% KLD` is the 99th-percentile divergence on the same 32k run. `Top-p` is top-token agreement with BF16
|
| 308 |
+
on the 32k run.
|
| 309 |
+
|
| 310 |
+
Long context costs very little on this release: for every tier from `Q8_0` through `Q4_K_S`, the 32k mean
|
| 311 |
+
is within 10% of the 512-token value (`Q5_K_M` and `Q5_K_S` rise about 15%), and `Q4_K_M` keeps the same
|
| 312 |
+
top token as BF16 on 95% of positions at 32k. The pick below follows the 99th-percentile tail at 32k:
|
| 313 |
+
0.163 for `Q4_K_M`, 0.050 for `Q5_K_M`, 0.014 for `Q6_K`, 0.005 for `Q8_0`.
|
| 314 |
+
|
| 315 |
+
<table class="swift15-table" style="display:table;width:100%;table-layout:fixed;">
|
| 316 |
+
<thead><tr>
|
| 317 |
+
<th class="benchmark-heading" style="width:55%;text-align:left;padding-left:18px;white-space:normal;">Use case</th>
|
| 318 |
+
<th class="score-heading" style="width:45%;white-space:normal;">Pick</th>
|
| 319 |
+
</tr></thead>
|
| 320 |
+
<tbody>
|
| 321 |
+
<tr><td class="model">24 GB cards, everyday use</td><td class="swift15">Q4_K_M</td></tr>
|
| 322 |
+
<tr><td class="model">Long agentic runs, strict tool-call formatting</td><td class="swift15">Q6_K or higher</td></tr>
|
| 323 |
+
<tr><td class="model">Maximum fidelity</td><td class="swift15">Q8_0</td></tr>
|
| 324 |
+
</tbody>
|
| 325 |
+
</table>
|
| 326 |
+
|
| 327 |
+
<details>
|
| 328 |
+
<summary><strong>Recipe</strong></summary>
|
| 329 |
+
|
| 330 |
+
All 22 tiers were built with llama.cpp commit `6f41ac5` from a BF16 conversion of the published Swift 1.5
|
| 331 |
+
safetensors. They reuse the importance matrix and the per-tensor type layouts (`--tensor-type-file`) that
|
| 332 |
+
[bartowski](https://huggingface.co/bartowski/ukisai_Swift-Qwen3.8-27b-GGUF) computed for Swift 1.0 with his
|
| 333 |
+
[quantization-config](https://github.com/bartowski1182/quantization-config); Swift 1.5 has the same
|
| 334 |
+
architecture and tensor shapes. Every file was checked against BF16 on the harness above.
|
| 335 |
+
|
| 336 |
+
</details>
|
| 337 |
+
|
| 338 |
+
## License and access
|
| 339 |
+
|
| 340 |
+
Swift 1.5 is a derivative of [Qwen3.8-27B](https://huggingface.co/Qwen/Qwen3.8-27B)
|
| 341 |
+
(Copyright 2026 Alibaba Cloud, [Apache License 2.0](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b/blob/main/LICENSE-APACHE-2.0)). UkisAI's contribution, including the adapted
|
| 342 |
+
weights, is licensed under the **[Swift Open License v1.0](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b/blob/main/LICENSE)**. See [NOTICE](https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b/blob/main/NOTICE) for the change notice and attribution details.
|
| 343 |
+
|
| 344 |
+
Personal, research, educational, evaluation, and commercial use are free for individuals
|
| 345 |
+
and organizations with gross annual revenue, including affiliates, of up to US$1,000,000.
|
| 346 |
+
Above that threshold, commercial use requires a separate Swift Enterprise License.
|
| 347 |
+
Contact [UkisAI](https://ukisai.com/contact) for terms.
|
| 348 |
+
|
| 349 |
+
Nothing in the Swift Open License limits rights in Qwen3.8-27B itself under Apache 2.0.
|
| 350 |
+
|
| 351 |
+
## Citation
|
| 352 |
+
|
| 353 |
+
~~~bibtex
|
| 354 |
+
@misc{swift-1.5-qwen3.8-27b,
|
| 355 |
+
title = {Swift 1.5 Qwen3.8-27B},
|
| 356 |
+
author = {UkisAI},
|
| 357 |
+
year = {2026},
|
| 358 |
+
url = {https://huggingface.co/ukisai/Swift-1.5-Qwen3.8-27b}
|
| 359 |
+
}
|
| 360 |
+
~~~
|
| 361 |
+
|
| 362 |
+
## Acknowledgements
|
| 363 |
+
|
| 364 |
+
We acknowledge the [NVIDIA Innovation Lab](https://www.nvidia.com/en-us/data-center/innovation-lab/),
|
| 365 |
+
[Amazon Web Services](https://aws.amazon.com/), and
|
| 366 |
+
[Google Cloud](https://cloud.google.com/) for providing compute credits and
|
| 367 |
+
infrastructure support for Swift's development, training, and evaluation.
|
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version https://git-lfs.github.com/spec/v1
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ADDED
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ukisai-banner.png
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Git LFS Details
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