How large is the Claude API’s context window? (original) (raw)

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4. How large is the Claude API’s context window?

Updated this week

The Claude API can ingest 1M tokens when using Claude Fable 5, Claude Opus 4.8, Opus 4.7, Opus 4.6, or Sonnet 4.6, and 200K+ tokens (about 500 pages of text or more) when using all other models.

For more detailed information, see our Claude API Docs and Models overview.

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