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pmxiyesterday at 3:23 PM2 repliesview on HN

That's a summarized and filtered view of the actual reasoning.

OpenAI and Anthropic guard the real reasoning closely. Users have never been able to see it and the API returns an encrypted blob instead of legible reasoning.


Replies

wren6991yesterday at 4:46 PM

Older models did show the full unredacted thinking trace, but I don't think Opus has ever shown full CoT.

Here is an archived version of Anthropic's API docs saying that Sonnet 3.7 (only) has unredacted CoT on API: https://web.archive.org/web/20260324051339/https://platform....

hectdevyesterday at 3:45 PM

Got it. Thanks