overview changedmodels/sonnet-5-5/overview
Nearest release: v2.1.307, published 2 hours after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+1added
Lines−1removed
From line
96
where the diff opens
First seen
29 Sep 2026
this site's first read of the page
Recorded edits6to this page, all time
The whole hunk
from line 96, old and new numbered
/
from line 96
9696## Good to know
9797
9898* Adaptive thinking is on by default. The lowest thinking setting is `between_tools`, which turns off up-front thinking. It works at `high` effort or below. See [What's new in Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-5-5#turn-off-up-front-thinking).
99* Setting `temperature`, `top_p`, or `top_k` to a non-default value returns a 400 error.
99* Setting `temperature`, `top_p`, or `top_k` returns a 400 error.
100100* The minimum cacheable prompt length is 512 tokens. See [Prompt caching](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#cache-limitations).
101101* On the [Message Batches API](https://platform.claude.com/docs/en/build-with-claude/batch-processing#extended-output-beta), Claude Sonnet 5.5 supports up to 300k output tokens with the `output-300k-2026-03-24` beta header.
102102* Query limits and capabilities programmatically with the [Models API](https://platform.claude.com/docs/en/api/models/list).
No line in this hunk matches that.