Create a Message changedapi/messages/create
Nearest release: v2.1.322, published 2 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
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Lines+16added
Lines−0removed
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First seen
14 Aug 2026
this site's first read of the page
Recorded edits28to this page, all time
The whole hunk
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11041104 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
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1106 - `"claude-fable-5-2"`
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1108 Built for the most ambitious work in coding, enterprise workflows, and the sciences
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1110 - `"claude-mythos-5-2"`
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1112 Built for the most demanding cybersecurity and life sciences research, available through verification programs
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11061114 - `"claude-haiku-5-5"`
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11081116 Fastest model for high-volume, real-time tasks
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39573965 The model that will complete your prompt.
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39593967 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
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3969 - `"claude-fable-5-2"`
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3971 Built for the most ambitious work in coding, enterprise workflows, and the sciences
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3973 - `"claude-mythos-5-2"`
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3975 Built for the most demanding cybersecurity and life sciences research, available through verification programs
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39613977 - `"claude-haiku-5-5"`
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No line in this hunk matches that.