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DeepSeek R1 vs Gemini 2.5 Flash

Gemini 2.5 Flash leads in 4 of 8 categories

Arena ELO

Gemini 2.5 Flash

Cheaper

Gemini 2.5 Flash

Faster

Gemini 2.5 Flash

Detailed Comparison

CategoryDeepSeek R1Gemini 2.5 Flash
ProviderDeepSeek Google
Context Window128K 1M WIN
Input Price ($/1M)$0.55 $0.3 WIN
Output Price ($/1M)$2.19 WIN$2.5
Arena ELO1310 1362 WIN
Codingunknown unknown
Reasoning#1 Math & Coding Arena unknown
Speed (tokens/sec)~45 t/s ~150 t/s WIN
Open SourceYes No

Frequently Asked Questions

Which is cheaper, DeepSeek R1 or Gemini 2.5 Flash?

DeepSeek R1 is approximately 2% cheaper than Gemini 2.5 Flash per million tokens.

Which is better for coding, DeepSeek R1 or Gemini 2.5 Flash?

DeepSeek R1 scores unknown on coding benchmarks, while Gemini 2.5 Flash scores unknown.

Which has a larger context window?

DeepSeek R1 supports 128K context, while Gemini 2.5 Flash supports 1M.

Is DeepSeek R1 or Gemini 2.5 Flash open source?

DeepSeek R1 is open source. Gemini 2.5 Flash is proprietary.

Which ranks higher on the Chatbot Arena leaderboard?

Gemini 2.5 Flash ranks higher with ELO 1362 vs 1310.