That's a summarized and filtered view of the actual reasoning.
replyOpenAI 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.
Older models did show the full unredacted thinking trace, but I don't think Opus has ever shown full CoT.
replyHere is an archived version of Anthropic's API docs saying that Sonnet 3.7 (only) has unredacted CoT on API: https://web.archive.org/web/20260324051339/https://platform....
Got it. Thanks
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