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Claude Opus 4.7 vs Kimi K3

Kimi K3 leads in 2 of 8 categories

Arena ELO

Claude Opus 4.7

Cheaper

Kimi K3

Faster

Tie

Detailed Comparison

CategoryClaude Opus 4.7Kimi K3
ProviderAnthropic Moonshot AI
Context Window128K 128K
Input Price ($/1M)N/A $0.6 WIN
Output Price ($/1M)N/A $2.5 WIN
Arena ELO1567 WINN/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo Yes

Frequently Asked Questions

Which has a larger context window?

Claude Opus 4.7 supports 128K context, while Kimi K3 supports 128K.

Is Claude Opus 4.7 or Kimi K3 open source?

Claude Opus 4.7 is proprietary. Kimi K3 is open source.

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