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Gemini 2.5 Flash vs GPT-5.4

Gemini 2.5 Flash leads in 3 of 8 categories

Arena ELO

GPT-5.4

Cheaper

Gemini 2.5 Flash

Faster

Gemini 2.5 Flash

Detailed Comparison

CategoryGemini 2.5 FlashGPT-5.4
ProviderGoogle OpenAI
Context Window1M 1M
Input Price ($/1M)$0.3 WIN$3
Output Price ($/1M)$2.5 WIN$15
Arena ELO1362 1560 WIN
Codingunknown unknown
Reasoningunknown unknown
Speed (tokens/sec)~150 t/s WIN~50 t/s
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Gemini 2.5 Flash or GPT-5.4?

Gemini 2.5 Flash is approximately 84% cheaper than GPT-5.4 per million tokens.

Which is better for coding, Gemini 2.5 Flash or GPT-5.4?

Gemini 2.5 Flash scores unknown on coding benchmarks, while GPT-5.4 scores unknown.

Which has a larger context window?

Gemini 2.5 Flash supports 1M context, while GPT-5.4 supports 1M.

Is Gemini 2.5 Flash or GPT-5.4 open source?

Gemini 2.5 Flash is proprietary. GPT-5.4 is proprietary.

Which ranks higher on the Chatbot Arena leaderboard?

GPT-5.4 ranks higher with ELO 1560 vs 1362.

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