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--- |
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base_model: Qwen/Qwen3-4B-Instruct-2507 |
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datasets: |
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- LucidityAI/Astral-1.5-Post-Train-Dataset |
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tags: |
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- code |
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- chemistry |
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- finance |
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- biology |
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--- |
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# Astral-1.5-4B-Preview-fixed |
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Astral 1.5 4B is the medium sized model in the Astral 1.5 family. It was fine-tuned from Qwen3 4B 2507 Instruct on LucidityAI/Astral-1.5-Post-Train-Dataset. |
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> Note: This is on a different repo than the original preview, as for there was an issue merging the original model, leading it it being highly unreliable. |
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We reintroduce the reasoning effort selection as seen in Astral 1's preview model, yet not used in Astral 1. |
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The following modes are available for Astral 1.5: |
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- **low**: Generates a smaller reasoning trace |
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- **medium**: Generates a decent sized reasoning trace: |
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- **high**: Generates a generally unrestricted in size trace |
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- **agent**: Genreates no reasoning trace. Intended for agentic use. |
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Usage example: |
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``` |
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<|im_start|>reasoning_level |
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medium |
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<|im_end|> |
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<|im_start|>user |
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What is the capital of France? |
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<|im_end|> |
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<|im_start|> |
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``` |
