Astral-4B-Coder

Astral 4B is the largest sized model in the Astral coder family. It was fine-tuned from Astral 4b on LucidityAI/Astral-Post-Training-Dataset.

Use /no_think for agentic tasks, use thinking for non-agentic coding tasks/

As with usual Qwen3 models, reasoning can be toggled through the usage of /no_think or not.

Example Prompt (ChatML Format (THINKING)):

<|im_start|>user
What is the capital of France?
<|im_end|>
<|im_start|>assistant
<think>

Example Prompt (ChatML Format (NON-THINKING)):

<|im_start|>user
What is the capital of France? /no_think
<|im_end|>
<|im_start|>assistant
<think>

Base model