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Claude opus 4.5

Claude Opus 4.5 is Anthropic's frontier reasoning model, optimized for complex software engineering and long-horizon tasks. It supports extended thinking and multimodal capabilities.

Thinking Mode
Parameters
N/A
Context
200,000 tokens
Released
Invalid Date

Leaderboards

Average Score combining domain-specific Autobench scores; Higher is better

Performance vs. Industry Average

Context Window

Claude opus 4.5 has a smaller context window than average (406k tokens), with a context window of 200k tokens.

Claude opus 4.5 - AutoBench