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Anthropic · Active

claude-sonnet-4-5-20250929

claude-sonnet family · launched 2025-09-29

MultimodalReasoningTools
AITopic score54.7#63 overall

Balanced Claude model for coding, analysis, agent workflows, and cost control

Evidence coverage3%1 evaluations · 1 institutions
Context / maximum output200k / 64ktokens
Cache / input / output— · $0.43 · $2.14USD per million tokens
Value / freshness63.6 / 44relative value · release freshness
Product profile

What this model supports

Inputtext, image, pdf
Outputtext
Knowledge cutoff2025-07-31
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 Analysis63.94 indexReading 54.7

Imported from a directly fetched third-party leaderboard.

Configuration: claude-sonnet-4-5-20250929Open evidence
Arena TextLMArena1,438.4 EloReading 54.7

Direct LMArena text leaderboard result.

Open evidence
Same builder

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