Anthropic launches Claude Haiku 5.5: fastest, cheapest small model, 75% cost cut
emmanuelvivier · x · 2026-10-12
Anthropic released Claude Haiku 5.5, its fastest and cheapest small model, targeting high-volume cost-sensitive workloads (summaries, compaction, DB queries, classification) and serving as a subagent alongside Opus 5.5 and Sonnet 5.5. It runs 75% cheaper than Haiku 4.5 on average. Benchmarks include HLE 45.9% (57.4% with tools), OSWorld 2.1 at 72.4% (offline subset), Terminal-Bench 4.0 at 39.2%. Anthropic also halved Sonnet 5.5 cache-read pricing (20% cheaper agentic runs) and added monthly API credits for Max/Team subscribers.
Related event: Anthropic launches Claude Haiku 5.5 with about 75% lower running costs(2 posts)→
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