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Anthropic releases Claude Haiku 5.5, Sonnet 5.5, and Opus 5.5 AI models

Anthropic launched new AI models with faster speeds and lower operating costs.

Anthropic donates the Agent Skills AI standard to the AAIF — image from Anthropic
Image: Anthropic

Summary

Anthropic released Claude Haiku 5.5 as its fastest small model for high-volume tasks. The company also introduced Claude Sonnet 5.5, which runs 30 percent faster and costs up to 30 percent less. Claude Opus 5.5 reduces operating costs by 40 percent on typical workloads.

What changed

  • Anthropic launched Claude Haiku 5.5 for summarization, subagents, and browser use.
  • Claude Sonnet 5.5 runs 30 percent faster and costs up to 30 percent less than the prior version.
  • Claude Opus 5.5 costs 40 percent less to run than Opus 5 on typical workloads.

Availability

Available now

“Introducing Claude Haiku 5.5 Claude Haiku 5.5 is our fastest, most capable small model. Built for high-volume work like summarization, subagents, and browser use.”

Pricing

PlanPrice, as statedChecked
Claude research team Premium seats$15 per month“Verified principal investigators qualify for a Claude Team subscription plan and then add their research team to Standard seats for free, or Premium seats for $15 per month, for up to a year.” source

Prices as stated by the company; we don’t convert or estimate.

Founder takeaway

Test Claude Sonnet 5.5 and Opus 5.5 on your existing tasks to check the lower prices and faster speed.

Source

AnthropicAnnouncements

Announced Checked

Researched and drafted with AI from the official sources above, then checked automatically before publishing. Spotted a mistake? Tell us.

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