Model Comparison
GPT-4o vs Grok 4
GPT-4o: Ultra-efficientGrok 4: Heavy
Side-by-side environmental impact comparison. Grok 4 uses 18.6x more energy per query.
Grok 4 uses 18.6x more energy than GPT-4o
8.0 Wh vs 0.43 Wh per query · 4.0 g vs 0.19 g CO₂ · 15 mL vs 2 mL water
GPT-4o
OpenAI
Energy per query0.43 Wh
CO₂ per query0.19 g
Water per query2 mL
VS
Grok 4
xAI
Energy per query8.0 Wh
CO₂ per query4.0 g
Water per query15 mL
GPT-4o
ProviderOpenAI
CategoryText / Chat
Inference LocationAzure US East / Sweden
Confidencepeer-reviewed
Efficiency TierUltra-efficient
Grok 4
ProviderxAI
CategoryText / Chat
Inference LocationxAI Memphis data centre
Confidenceestimated
Efficiency TierHeavy
Frequently Asked Questions
Which uses more energy, GPT-4o or Grok 4?
Grok 4 uses 18.6x more energy per query than GPT-4o. GPT-4o uses 0.43 Wh per query, while Grok 4 uses 8.0 Wh.
What is the carbon footprint difference between GPT-4o and Grok 4?
Grok 4 uses 21.1x more CO₂ per query than GPT-4o. GPT-4o emits 0.19 g of CO₂ per query compared to Grok 4's 4.0 g.
Which is more environmentally friendly, GPT-4o or Grok 4?
GPT-4o is the more environmentally friendly option, using 0.43 Wh per query compared to Grok 4's 8.0 Wh. That makes Grok 4 roughly 18.6x more energy-intensive.
Calculate your footprint with these models
See how your daily usage of GPT-4o and Grok 4 adds up over time. Our calculator estimates energy, carbon, and water impact.
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