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Anthropic · Active

Claude Opus 4.5 (20251101)

claude-opus family · launched 2025-11-24

MultimodalReasoningTools
AITopic score57.8#65 overall

Flagship Claude model for deep reasoning, coding, and long-horizon agents

Evidence coverage5%1 evaluations · 1 institutions
Context / maximum output200k / 64ktokens
Cache / input / output$0.5 · $5 · $25USD per million tokens
Value / freshness36.3 / 47relative value · release freshness
Product profile

What this model supports

Inputtext, image, pdf
Outputtext
Knowledge cutoff2025-05
WeightsProprietary / hosted
Capability profile

Strengths by domain

Coding—0 public results
Research & reasoning—0 public results
Professional work—0 public results
Knowledge & instruction—0 public results
Behind the score

Every result has a source

Raw results and standardized readings are shown together. Missing tests add neither points nor penalties.

Human preference & indices2 results

AA IndexArtificial Analysis64.81 indexReading 57.8

Imported from Artificial Analysis. The published 0–100 score is used directly; it is not z-score normalized.

Configuration: Claude Opus 4.5 (20251101)Open evidence
Arena TextLMArena1,450.9 EloReading 57.8

Direct LMArena text leaderboard result.

Open evidence
Same builder

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