Claude 3 Opus is Anthropic's most powerful model for highly complex tasks, offering top-level performance, intelligence, fluency, and understanding. It is optimized for advanced research, coding, and multimodal applications, and is benchmarked as a leader in the Claude 3 family.
Retired on Aug 27, 2026: requests to this model ID now return an error. These models are live and work with the same API key.
Claude 3 Opus is Anthropic's most powerful model for highly complex tasks, offering top-level performance, intelligence, fluency, and understanding. It is optimized for advanced research, coding, and multimodal applications, and is benchmarked as a leader in the Claude 3 family.
No. Claude 3 Opus was retired on NagaAI on Aug 27, 2026, and requests to it now return an error. Live models you can use instead with the same API key: Claude Haiku 5.5, Claude Sonnet 5.5 and Claude Opus 5.5.
It takes text as input and returns text.
