claude-on-vertex-ai changedbuild-with-claude/claude-on-vertex-ai
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370370### Context window
371371
372Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, and Claude Sonnet 4.6 have a [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) on Agent Platform. Other Claude models, including Sonnet 4.5 and Sonnet 4 (deprecated), have a 200k-token context window.
372Claude Fable 5.1, Claude Fable 5, Claude Opus 5.5, Claude Opus 5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, Claude Sonnet 5.5, Claude Sonnet 5, and Claude Sonnet 4.6 have a [1M-token context window](https://platform.claude.com/docs/en/build-with-claude/context-windows) on Agent Platform. Other Claude models, including Sonnet 4.5 (deprecated) and Sonnet 4 (deprecated), have a 200k-token context window.
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374374Agent Platform limits request payloads to 30 MB. When sending large documents or many images, you might reach this limit before the token limit.
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384384Regional and multi-region endpoints include a 10% pricing premium over global endpoints.
385385
386386<Note>
387 This applies to Claude Sonnet 4.5 and future models only. Older models (Claude Sonnet 4 (deprecated), Opus 4 (deprecated), and earlier) maintain their existing pricing structures.
387 This applies to Claude Sonnet 4.5 (deprecated) and future models only. Older models (Claude Sonnet 4 (deprecated), Opus 4 (deprecated), and earlier) maintain their existing pricing structures.
388388</Note>
389389
390390### When to use each option
No line in this hunk matches that.