Anthropic launches Claude Haiku 5.5 at 75% lower average cost

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High-volume summaries, classification, and subagent coding need a model you can afford to call repeatedly. Anthropic launches Claude Haiku 5.5 at a stated 75% lower average cost, with adjustable effort to trade cost against capability.

Here's what changed:

• Prompts up to 100,000 tokens cost 90% less, at $0.10 per million input tokens and $0.50 per million output tokens.
• Prompts above 100,000 tokens cost 50% less, at $0.50 for input and $2.50 for output per million tokens.
• Anthropic reports 39.2% on Terminal-Bench 4.0, versus Haiku 4.5's 0.0% and GPT-6 Luna's 16.4%.
• Adjustable effort is new to the Haiku class, letting you choose the cost-capability tradeoff.

One catch: The changed tokenizer consumes slightly more tokens per task.

Try it: Use claude-haiku-5-5 on the Claude Platform, Amazon Web Services, Google Cloud or Microsoft Azure. Also available via Vercel, Amazon Web Services, Databricks, LiteLLM

Sources: anthropic.com