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Claude Opus 4.6 vs Gemini 3.5 Flash

Both models are evenly matched

Arena ELO

Claude Opus 4.6

Cheaper

Gemini 3.5 Flash

Faster

Claude Opus 4.6

Detailed Comparison

CategoryClaude Opus 4.6Gemini 3.5 Flash
ProviderAnthropic Google
Context Window1M 1M
Input Price ($/1M)$5 $1.5 WIN
Output Price ($/1M)$25 $9 WIN
Arena ELO1549 WINN/A
Coding80.8% SWE-bench N/A
Reasoning65.4% Terminal-Bench N/A
Speed (tokens/sec)~40 t/s WINN/A
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Opus 4.6 or Gemini 3.5 Flash?

Gemini 3.5 Flash is approximately 65% cheaper than Claude Opus 4.6 per million tokens.

Which is better for coding, Claude Opus 4.6 or Gemini 3.5 Flash?

Claude Opus 4.6 scores 80.8% SWE-bench on coding benchmarks, while Gemini 3.5 Flash scores N/A.

Which has a larger context window?

Claude Opus 4.6 supports 1M context, while Gemini 3.5 Flash supports 1M.

Is Claude Opus 4.6 or Gemini 3.5 Flash open source?

Claude Opus 4.6 is proprietary. Gemini 3.5 Flash is proprietary.