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llm 0.32a2

Summary

LLM 0.32a2 release: most reasoning-capable OpenAI models now use the /v1/responses endpoint, enabling interleaved reasoning across tool calls for GPT-5 class models. Users can see reasoning tokens in a different color.

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Release: llm 0.32a2

Simon Willison’s Weblog

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12th May 2026

Release

llm 0.32a2 — Access large language models from the command-line

A bunch of useful stuff in this LLM alpha, but the most important detail is this one:

Most reasoning-capable OpenAI models now use the /v1/responses endpoint instead of /v1/chat/completions. This enables interleaved reasoning across tool calls for GPT-5 class models. #1435

This means you can now see the summarized reasoning tokens when you run prompts against an OpenAI model, displayed in a different color to standard error. Use the -R or --hide-reasoning flags if you don't want to see that.

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Key points and analysis

Article intelligence

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Key points

  • Reasoning OpenAI models switch to /v1/responses endpoint
  • Enables interleaved reasoning across tool calls for GPT-5 class models
  • Summarized reasoning tokens displayed in different color
  • Use -R or --hide-reasoning to hide reasoning output

Highlights and analysis are generated automatically and may contain errors. Check the original source.