Claude Opus 4.5
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Excels at long-horizon reasoning, advanced coding, dynamic effort control, robust multimodal tasks, and detailed computer interface inspection for complex workflows.
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 4.5
Log in to chat with any model.