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Claude Opus 4.8 vs Gemini 2.5 Flash

Gemini 2.5 Flash leads in 5 of 8 categories

Arena ELO

Gemini 2.5 Flash

Cheaper

Gemini 2.5 Flash

Faster

Gemini 2.5 Flash

Detailed Comparison

CategoryClaude Opus 4.8Gemini 2.5 Flash
ProviderAnthropic Google
Context Window200K 1M WIN
Input Price ($/1M)$5 $0.3 WIN
Output Price ($/1M)$25 $2.5 WIN
Arena ELON/A 1362 WIN
CodingN/A unknown
ReasoningN/A unknown
Speed (tokens/sec)N/A ~150 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Opus 4.8 or Gemini 2.5 Flash?

Gemini 2.5 Flash is approximately 91% cheaper than Claude Opus 4.8 per million tokens.

Which is better for coding, Claude Opus 4.8 or Gemini 2.5 Flash?

Claude Opus 4.8 scores N/A on coding benchmarks, while Gemini 2.5 Flash scores unknown.

Which has a larger context window?

Claude Opus 4.8 supports 200K context, while Gemini 2.5 Flash supports 1M.

Is Claude Opus 4.8 or Gemini 2.5 Flash open source?

Claude Opus 4.8 is proprietary. Gemini 2.5 Flash is proprietary.