1M token context window
validasserted
- Valid from
- 2026-10-07
- Valid until
- still holds
- Published
- 2026-10-07
- Recorded by AsOf
- 2026-11-06
- Checked
- 2026-11-06 · its source page states the value and the date
- Confidence
- 0.70
Sources
“We’ve launched Claude Haiku 5.5 ( claude-haiku-5-5 ), our most capable model tuned for high-volume and latency-sensitive work. It has a 1M token context window , 128k max output tokens, and adaptive thinking with the effort parameter .”— what the page says, read 2026-11-06
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