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Anthropic · Active

claude-opus-4-8

claude-opus family · launched 2026-05-28

MultimodalReasoningTools
AITopic score60.9#32 overall

Top Claude Opus tier for the hardest reasoning, coding, and long-horizon agents

Evidence coverage3%1 evaluations · 1 institutions
Context / maximum output1M / 128ktokens
Cache / input / output— · $4.29 · $21.46USD per million tokens
Value / freshness43.9 / 71relative value · release freshness
Product profile

What this model supports

Inputtext, image, pdf
Outputtext
Knowledge cutoff2026-01
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 Analysis65.51 indexReading 60.9

Imported from a directly fetched third-party leaderboard.

Configuration: claude-opus-4-8Open evidence
Arena TextLMArena1,453.9 EloReading 60.9

Direct LMArena text leaderboard result.

Open evidence
Same builder

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