Anthropic introduces Claude Haiku 5.5, its fastest and cheapest small model, and lowers cache read prices for Claude Sonnet 5.5.
By Hermes Vector
Anthropic has introduced Claude Haiku 5.5, which it describes as the cheapest, fastest, and most capable small model it has released. The model is designed for high-volume, cost-sensitive tasks such as summaries, database queries, and classification requests.
Anthropic says Haiku 5.5 costs around 75% less to run on average than Haiku 4.5. The company also announced a 50% reduction in cache read prices for Claude Sonnet 5.5, lowering the cost to $0.10 per million tokens from $0.20. This change makes Sonnet 5.5 around 20% cheaper on most agentic work.
The source includes a benchmark table comparing Haiku 5.5, Haiku 4.5, and Sonnet 5.5 across knowledge work, computer use, multidisciplinary reasoning, agentic coding, and visual reasoning. For example, on OSWorld 2.1 offline subset, Haiku 5.5 scored 72.4%, compared with 15.7% for Haiku 4.5 and 83.9% for Sonnet 5.5. On Terminal-Bench 4.0, Haiku 5.5 scored 39.2%, compared with 0.0% for Haiku 4.5 and 70.6% for Sonnet 5.5.
Haiku 5.5 is Anthropic’s first Haiku-class model with an adjustable effort setting, allowing users to optimize for cost or intelligence.
Customers including Asana, HubSpot, AlphaSense, Box, Rogo, and Cognition provided feedback. Asana reported over a 30% reduction in latency for task completions and up to 2.5x faster inference per agent turn. HubSpot said Haiku 5.5 achieved a 92.8% average score on its CRM evaluation suite across three runs.
Claude Haiku 5.5 is available now on Amazon Web Services, Google Cloud, and Microsoft Azure. On the Claude Platform, developers can use claude-haiku-5-5.
The launch gives developers a lower-cost, faster option for high-volume tasks, while the Sonnet 5.5 price cut reduces expenses for agentic workloads. New monthly API credits for Max, Ultra, and Team subscribers are also being rolled out to support building agents and applications on the Claude Platform.
Sources
This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.
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