Claude Opus 4.1
text-to-text
Excels at complex coding, autonomous research, and agent workflows, with advanced reasoning and a 200,000-token context for deep analysis and synthesis.
Model Parameters
Advanced settings to control the behavior of the model.
A system prompt that will be prepended to all chat messages to guide the model's behavior. Automatically gets saved to your playground repository.
Controls randomness: 0 = deterministic, 2 = very creative
Maximum length of the response (1-128000 tokens)
Claude Opus 4.1
Log in to chat with any model.