Model Comparison
GitHub Copilot vs GPT-5.2 Codex
GitHub Copilot: StandardGPT-5.2 Codex: Heavy
Side-by-side environmental impact comparison. GPT-5.2 Codex uses 2.7x more energy per query.
GPT-5.2 Codex uses 2.7x more energy than GitHub Copilot
4.0 Wh vs 1.5 Wh per query · 1.7 g vs 0.66 g CO₂ · 15 mL vs 5 mL water
GitHub Copilot
GitHub / OpenAI
Energy per query1.5 Wh
CO₂ per query0.66 g
Water per query5 mL
VS
GPT-5.2 Codex
OpenAI
Energy per query4.0 Wh
CO₂ per query1.7 g
Water per query15 mL
GitHub Copilot
ProviderGitHub / OpenAI
CategoryCode Assistant
Inference LocationAzure US (primarily East)
Confidenceestimated
Efficiency TierStandard
GPT-5.2 Codex
ProviderOpenAI
CategoryCode Assistant
Inference LocationAzure / Multi-cloud
Confidenceestimated
Efficiency TierHeavy
Frequently Asked Questions
Which uses more energy, GitHub Copilot or GPT-5.2 Codex?
GPT-5.2 Codex uses 2.7x more energy per query than GitHub Copilot. GitHub Copilot uses 1.5 Wh per query, while GPT-5.2 Codex uses 4.0 Wh.
What is the carbon footprint difference between GitHub Copilot and GPT-5.2 Codex?
GPT-5.2 Codex uses 2.6x more CO₂ per query than GitHub Copilot. GitHub Copilot emits 0.66 g of CO₂ per query compared to GPT-5.2 Codex's 1.7 g.
Which is more environmentally friendly, GitHub Copilot or GPT-5.2 Codex?
GitHub Copilot is the more environmentally friendly option, using 1.5 Wh per query compared to GPT-5.2 Codex's 4.0 Wh. That makes GPT-5.2 Codex roughly 2.7x more energy-intensive.
Calculate your footprint with these models
See how your daily usage of GitHub Copilot and GPT-5.2 Codex adds up over time. Our calculator estimates energy, carbon, and water impact.
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