Model Comparison
Gemini 2.5 Flash vs GPT-4o
Gemini 2.5 Flash: Ultra-efficientGPT-4o: Ultra-efficient
Side-by-side environmental impact comparison. GPT-4o uses 79% more energy per query.
GPT-4o uses 79% more energy than Gemini 2.5 Flash
0.43 Wh vs 0.24 Wh per query · 0.19 g vs 0.03 g CO₂ · 2 mL vs 0.26 mL water
Gemini 2.5 Flash
Google
Energy per query0.24 Wh
CO₂ per query0.03 g
Water per query0.26 mL
VS
GPT-4o
OpenAI
Energy per query0.43 Wh
CO₂ per query0.19 g
Water per query2 mL
Gemini 2.5 Flash
ProviderGoogle
CategoryText / Chat
Inference LocationGoogle global network (64% renewable)
Confidenceverified
Efficiency TierUltra-efficient
GPT-4o
ProviderOpenAI
CategoryText / Chat
Inference LocationAzure US East / Sweden
Confidencepeer-reviewed
Efficiency TierUltra-efficient
Frequently Asked Questions
Which uses more energy, Gemini 2.5 Flash or GPT-4o?
GPT-4o uses 79% more energy per query than Gemini 2.5 Flash. Gemini 2.5 Flash uses 0.24 Wh per query, while GPT-4o uses 0.43 Wh.
What is the carbon footprint difference between Gemini 2.5 Flash and GPT-4o?
GPT-4o uses 6.3x more CO₂ per query than Gemini 2.5 Flash. Gemini 2.5 Flash emits 0.03 g of CO₂ per query compared to GPT-4o's 0.19 g.
Which is more environmentally friendly, Gemini 2.5 Flash or GPT-4o?
Gemini 2.5 Flash is the more environmentally friendly option, using 0.24 Wh per query compared to GPT-4o's 0.43 Wh. That makes GPT-4o roughly 1.8x more energy-intensive.
Calculate your footprint with these models
See how your daily usage of Gemini 2.5 Flash and GPT-4o adds up over time. Our calculator estimates energy, carbon, and water impact.
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