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#fe54a744
Topic
AGENTS & TOOLS
Source
Simon Willison
Published
2026-05-12 17:45:07
Importance
★ 7/10 — radar 70

`llm` `0.32a2` adds `responses` API support for OpenAI reasoning models

OpenAI reasoning models now route through /v1/responses, so llm can show summarized reasoning tokens alongside tool-use runs. Useful if you script GPT-5-class workflows from the CLI and want better visibility without building your own trace UI.

[ KEY POINTS ]
  1. OpenAI reasoning-capable models in llm now use /v1/responses instead of chat/completions, matching the newer tool-calling path.
  2. Reasoning summaries are surfaced directly in CLI output with separate coloring, which makes agent runs easier to inspect during debugging.
  3. -R and --hide-reasoning let you suppress that trace when logs need to stay clean or machine-readable.
Originalsimonwillison.net/2026/May/12/llm/#atom-everythingRead original →

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