Claude Haiku 5.5
Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we've ever released.
Anthropic's fastest, cheapest small AI model for high-volume tasks like summaries, classification and coding subagents.
Claude Haiku 5.5 pricing
Overview
What is Claude Haiku 5.5?
Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we've ever released.
Claude Haiku 5.5 is Anthropic's fastest, cheapest small AI model, built for high-volume, cost-sensitive work: quick repetitive tasks like summaries, classification and database queries, coding subagents paired with larger models, and speed-sensitive uses like live customer support and browser use. It is the first Haiku-class model with an adjustable effort setting, so you can trade off between cost and intelligence.
Official benchmarks: OSWorld computer-use score of 72.4% (vs 15.7% for Haiku 4.5), and it runs about 75% cheaper on average. Updated Python and TypeScript SDKs add computer use and browser use in beta.
Available on the Claude Platform, Amazon Web Services, Google Cloud, and Microsoft Azure under the model ID claude-haiku-5-5. Pricing: $0.10 per 1M input tokens for prompts up to 100k tokens ($0.50 above), $0.50 per 1M output tokens ($2.50 above) — roughly 90% cheaper than Haiku 4.5 for up to 100k-token prompts.
Platforms and languages
Claude Haiku 5.5 Availability
Platforms
Languages
Capabilities
Claude Haiku 5.5 Key Features
Adjustable effort setting
First Haiku-class model letting you choose whether to optimize for cost or intelligence.
Fastest model at standard speed
Suited to speed-sensitive tasks like live customer support and browser use.
Strong benchmark gains
OSWorld computer-use score of 72.4% vs 15.7% for Haiku 4.5.
Available on all major clouds
Claude Platform, Amazon Web Services, Google Cloud, and Microsoft Azure.
New SDK support
Updated Python and TypeScript SDKs add computer use and browser use in beta.
Best for
Who uses Claude Haiku 5.5?
Developers building high-volume AI agents and applications
Cheap, fast inference for summaries, classification, coding subagents and live support
Plans and access
Claude Haiku 5.5 Pricing
Paid
$0.10/$0.50 per 1M input tokens (up to/over 100k prompts); $0.50/$2.50 output
Common questions
Claude Haiku 5.5 FAQs
How much cheaper is Haiku 5.5 than the previous Haiku?
Priced about 90% lower than Haiku 4.5 for requests up to 100k tokens (50% lower above that) — on average around 75% less to run.
What workloads is Haiku 5.5 built for?
High-volume, cost-sensitive, repetitive tasks: summaries, compaction, classification, database queries, coding subagents, live customer support, and browser use.
What is the effort setting?
An adjustable setting that lets you trade off between cost and intelligence, similar to Anthropic's larger models — the first time a Haiku-class model offers this.
Where can I use Haiku 5.5?
On the Claude Platform, AWS, Google Cloud, and Microsoft Azure, using the model ID claude-haiku-5-5.
When should I pick a bigger model instead?
Sonnet 5.5 and Opus 5.5 remain better for complex agentic coding. Haiku 5.5 fits narrower tasks that were previously cost-prohibitive.
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