overview changedmodels/haiku-5-5/overview
Nearest release: v2.1.296, published an hour 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+3added
Lines−2removed
From line
90
where the diff opens
First seen
8 Oct 2026
this site's first read of the page
Recorded edits4to this page, all time
The whole hunk
from line 90, old and new numbered
/
from line 90
9090## Good to know
9191
9292* Adaptive thinking is on by default. Control thinking depth with the [effort parameter](https://platform.claude.com/docs/en/build-with-claude/effort).
93* Omit `temperature`, `top_p`, and `top_k`, since a non-default value for any of them returns a 400 error.
93* Omit `temperature`, `top_p`, and `top_k`. See [Remove sampling parameters](https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide#remove-sampling-parameters) for the values that return a 400 error.
9494* On the [Message Batches API](https://platform.claude.com/docs/en/build-with-claude/batch-processing#extended-output-beta), Claude Haiku 5.5 supports up to 300k output tokens with the `output-300k-2026-03-24` beta header.
95* The minimum cacheable prompt length is 512 tokens. See [Prompt caching](https://platform.claude.com/docs/en/build-with-claude/prompt-caching#cache-limitations).
9596* Query limits and capabilities programmatically with the [Models API](https://platform.claude.com/docs/en/api/models/list).
9697
9798## Resources
from line 111
110111 </Card>
111112
112113 <Card title="Context windows" icon="stack" href="https://platform.claude.com/docs/en/build-with-claude/context-windows">
113 1M tokens. How the window is counted and managed.
114 How the context window is counted and managed.
114115 </Card>
115116</CardGroup>
116117
No line in this hunk matches that.