Claude Opus 4.5
Premium model combining maximum intelligence with practical performance. Best model in the world for coding, agents, and computer use. Most robustly aligned model with best prompt injection resistance of any frontier model. Features
Benchmarks
Arena Performance
Claude Opus 4.5 Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
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FAQ
Common questions about Claude Opus 4.5
Claude Opus 4.5 was released on November 24, 2025 by Anthropic.
Claude Opus 4.5 was created by Anthropic.
Claude Opus 4.5 is released under the Proprietary license.
Claude Opus 4.5 has a knowledge cutoff of March 2025. This means the model was trained on data up to this date.
Yes, Claude Opus 4.5 is a multimodal model that can process both text and images as input.