Count tokens in a Message changedapi/beta/messages/count_tokens
Nearest release: v2.1.294, 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+4added
Lines−0removed
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where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits19to this page, all time
The whole hunk
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30933093 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
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3095 - `"claude-haiku-5-5"`
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3097 Fastest model for high-volume, real-time tasks
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30953099 - `"claude-sonnet-5-5"`
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30973101 Efficient model for coding and agents
No line in this hunk matches that.