Claude Opus 5.5 has become the default Opus. The official description states that it "performs at the same level as Fable 5.1 ...

Claude Opus 5.5 is here with stronger coding, 40% lower typical costs, faster responses, new security features, pricing and ...

Anthropic has introduced Claude Opus 5.5, the first AI model in its new Claude 5.5 family, offering improved performance, ...

Anthropic released Claude Opus 5.5 on September 22, cutting API pricing 20%. The model matches Claude Fable 5.1's performance and includes safety safeguards.

Discover 10 impressive real-world creations and use cases that showcase what Claude Fable 5.1 is capable of.

Anthropic released Claude Opus 5.5 on Tuesday, saying the model sets a new state of the art in coding and knowledge work. Opus is the most capable tier of ...

Life sciences organizations can apply to use the model with fewer safety guardrails for biology research through the ...

Anthropic released Claude Opus 5.5. It is a model that offers performance comparable to Fable 5.1 at a lower unit price than Opus 5.In conclusion, companies currently using Opus 5 should strongly ...

Claude Opus 5.5 provide Fable 5.1-level performance on most work while Anthropic says typical workloads cost 40% less than ...

Anthropic has launched Claude Opus 5.5, the first model in its Claude 5.5 family. It costs 40% less to run than Opus 5, ...

Anthropic’s Claude Opus 5.5 and OpenAI’s GPT-6 Sol & Luna have launched, leveraging their most powerful model at a lower ...

Anthropic ⁠said Opus 5.5 underwent external testing by independent AI safety research groups Frontier Design and METR before launch ...