View reasoning information

How to return and view reasoning in your W&B Inference responses

Reasoning models, like OpenAI’s GPT OSS 20B, include information about their reasoning steps as part of the output returned in addition to the final answer. This is automatic and no additional input parameters are needed.

You can determine whether a model supports reasoning or not by checking the Supported Features section of its catalog page in the UI.

You can find reasoning information in the reasoning field of responses. The value of this field is null in the responses of non-reasoning models.

Python

import openai

client = openai.OpenAI(
    base_url='https://api.inference.wandb.ai/v1',
    api_key="<your-api-key>",  # Create an API key at https://wandb.ai/settings
)

response = client.chat.completions.create(
    model="openai/gpt-oss-20b",
    messages=[
        {"role": "user", "content": "3.11 and 3.8, which is greater?"}
    ],
)

print(response.choices[0].message.reasoning)
print("--------------------------------")
print(response.choices[0].message.content)

Bash

curl https://api.inference.wandb.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer <your-api-key>" \
  -d '{
    "model": "openai/gpt-oss-20b",
    "messages": [
      { "role": "user", "content": "3.11 and 3.8, which is greater?" }
    ]
  }'