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Qwen3.8-27B

Name in the API
Qwen/Qwen3.8-27B
Base model
Qwen/Qwen3.8-27B
Weights we run
Qwen/Qwen3.8-27B-FP8 (FP8 quantization)
Type
Chat
Input → output
text, image → text
Context length
262,144 tokens
Availability
Dedicated
Hardware
One GPU with at least 90 GB (NVIDIA H100 94 GB or RTX PRO 6000 96 GB)
Thinking
Default: on, with effort low. Our gateway sets chat_template_kwargs: {"reasoning_effort": "low"}; the model's own default would be xhigh. A reasoning_effort in your request overrides it.
reasoning_effort: low, medium, xhigh. minimal, high and max are rejected with error 400: the model's own chat template only knows these three levels.
The levels add an instruction to the prompt (low: keep thinking brief, xhigh: think carefully). In our tests the amount of thinking hardly changed between the levels.
Numeric effort: no.
Turn off: reasoning_effort: "none" or chat_template_kwargs: {"enable_thinking": false}.
Tool calling
Yes
Example
Chat request, question about an image. Set model to the name above.