Anthropic announced on September 22, 2026, the first model in the Claude 5.5 series, Claude Opus 5.5. The API model ID is ...

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

Anthropic's Claude Opus 5.5 launch boosts confidence in its AI model. Best AI model by October 2026 at 88.5% YES.

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.

On Tuesday, Anthropic launched Claude Opus 5.5, an AI model the company claims performs similarly to Claude Fable 5.1 but at a lower cost. The release purportedly offers Mythos-like cybersecurity and ...

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 ...

Claude Opus 5.5 reduces token costs by 40% while boosting speed up to 2.5x. Read our full test of Anthropic's new AI model for coding tasks.

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

Longer sessions meet faster, cheaper outputs as Opus 5.5 reduces token use and speeds up professional workflows.

The new model was externally tested and is designed to boost efficiency, safety, and cost-effectiveness for users.

Claude Opus 5.5 brings faster performance, lower API prices and strong safeguards for coding, research and complex AI agent ...

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