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Claude Opus 5 vs Gemma 4

Claude Opus 5 leads in 3 of 8 categories

Arena ELO

Tie

Cheaper

Claude Opus 5

Faster

Tie

Detailed Comparison

CategoryClaude Opus 5Gemma 4
ProviderAnthropic Google
Context Window200K WIN128K
Input Price ($/1M)$15 WINN/A
Output Price ($/1M)$75 WINN/A
Arena ELON/A N/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 5 supports 200K context, while Gemma 4 supports 128K.

Is Claude Opus 5 or Gemma 4 open source?

Claude Opus 5 is proprietary. Gemma 4 is open source.

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