Retrieve Message Batch results changedapi/beta/messages/batches/results
Nearest release: v2.1.296, published 4 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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First seen
14 Aug 2026
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Recorded edits22to this page, all time
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29492949 - `"claude-haiku-4-5"`
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2951 Fastest model with near-frontier intelligence
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29532951 - `"claude-haiku-4-5-20251001"`
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2955 Fastest model with near-frontier intelligence
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29572953 - `"claude-opus-4-5"`
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29592955 Powerful intelligence for long-running agents and coding
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36553651 Each entry represents one sampling iteration, with its own input/output token counts and cache statistics, discriminated by `type`. For `message` entries (model sampling iterations, such as the turns of a server-side tool use loop), this allows you to:
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3657 - Determine which iterations exceeded long context thresholds (>=200k tokens)
36583653 - Calculate the context window size from the last `message` entry
36593654 - Understand token accumulation across server-side tool use loops
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