Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
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One change · api

Retrieve Message Batch results changed

api/messages/batches/results

Nearest release: v2.1.258, 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+9added
Lines−1removed
From line 811 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits8to this page, all time

The whole hunk

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811811 
812812 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
813813 
814 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
814 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
815815 
816816 The model that will complete your prompt.
817817 
818818 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
819 
820 - `"claude-fable-5-1"`
821 
822 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
823 
824 - `"claude-mythos-5-1"`
825 
826 Our most capable model for cybersecurity and biology research, available through trusted access programs
819827 
820828 - `"claude-sonnet-5"`
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