Claude Haiku 5.5: API availability. First seen 7 Oct 2026 Catalogues list a 1,000,000 tokens context window. 20 evidence links.
Facts as of
- Context window
- 1,000,000
- Input · USD / 1M tokens
- $0.10 (Input ≤ 100,000 tokens); $0.50 (Input > 100,000 tokens)
- Output · USD / 1M tokens
- $0.50 (Input ≤ 100,000 tokens); $2.50 (Input > 100,000 tokens)
- Max output
- 128,000
- Input
- text · image
- Output
- text
- Cached input · USD / 1M tokens
- $0.01 (Input ≤ 100,000 tokens); $0.05 (Input > 100,000 tokens)
Alex's take

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