Anthropic has launched Claude Opus 5.5, the first release in its new Claude 5.5 family.
The San Francisco-based artificial intelligence developer said the model delivers performance similar to Claude Fable 5.1 on most tasks while costing 40% less to run than Opus 5. It is available through Anthropic's platform as well as Amazon Web Services, Google Cloud and Microsoft Azure.
Anthropic described the release as an update focused on performance, lower operating costs, faster output and tighter safety controls. Before launch, external evaluators including Frontier Design and METR tested Opus 5.5, which also recorded Anthropic's best result to date on the company's automated behavioural audit.
Pricing has been reduced across several measures. Input tokens cost USD $4 per million and output tokens USD $20 per million, both 20% lower than Opus 5. Cache reads are priced at USD $0.20 per million tokens, 60% lower than the previous model.
Anthropic also said Opus 5.5 generates output more than 30% faster than Opus 5. A faster mode is available through Claude Code and the Claude Platform, with input tokens priced at USD $8 per million and output tokens at USD $40 per million.
5 leads its benchmark table in agentic coding, computer use and knowledge work. 3% for Opus 5. 1 at 1735 and Opus 5 at 1708.
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