Gemini 2.5 Pro vs GPT-5 nano

GPT-5 nano is cheaper on input ($0.15 vs $5.00 per 1M tokens), Gemini 2.5 Pro has the larger context window (2M).

SpecGemini 2.5 ProGPT-5 nano
ProviderGoogleOpenAI
ModalityText + Vision + AudioText
Context window2Mbest128K
Input / 1M$5.00$0.15best
Output / 1M$15.00$0.60best
ReleasedSep 2025Jan 2026
Best forChat / Assistant, Code generation, Image / VisionHigh-volume / cheap, Chat / Assistant

FAQ

Is Gemini 2.5 Pro cheaper than GPT-5 nano?
GPT-5 nano is cheaper, at $0.15 per 1M input tokens versus $5.00.
Which has the larger context window, Gemini 2.5 Pro or GPT-5 nano?
Gemini 2.5 Pro has the larger context window at 2M tokens.

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