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Gemini 3.8 Flash vs Claude Opus 5

Both have similar output pricing, while Claude Opus 5 offers a larger context window. Choose Gemini 3.8 Flash or Claude Opus 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecGemini 3.8 FlashClaude Opus 5
ProviderGoogle DeepMindAbacus
Input / 1M tokens—$5.00
Output / 1M tokens—$25.00
Context window—1M
Parameters——
Open weightsNoNo
ReleasedSep 2026Jul 2026

FAQ

Is Gemini 3.8 Flash or Claude Opus 5 cheaper?

Gemini 3.8 Flash and Claude Opus 5 have comparable output pricing.

Which has the larger context window, Gemini 3.8 Flash or Claude Opus 5?

Claude Opus 5 has the larger context window (1M tokens).

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.