News · Claude
Claude Haiku 5.5 launches, costing around 75% less to run than Haiku 4.5
Posted on X by Claude (@claudeai) on 7 October 2026. The headline is our summary; the post itself is quoted below.
Claude@claudeai ·
Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released. On average, it costs around 75% less to run than…
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Context
- Claude Code 2.1.293Released the same day (UTC). Added Claude Haiku 5.5 (claude-haiku-5-5), now the default Haiku model on the Anthropic API — 1M context, $0.10/$0.50 per Mtok ($0.50/$2.50 for prompts over…
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