Model Comparison
Claude Sonnet 4 vs Claude Sonnet 4.5
Claude Sonnet 4: StandardClaude Sonnet 4.5: Standard
Side-by-side environmental impact comparison.
Both models use roughly the same energy per query
2.6 Wh vs 2.5 Wh per query · 0.91 g vs 0.88 g CO₂ · 5 mL vs 5 mL water
Claude Sonnet 4
Anthropic
Energy per query2.5 Wh
CO₂ per query0.88 g
Water per query5 mL
VS
Claude Sonnet 4.5
Anthropic
Energy per query2.6 Wh
CO₂ per query0.91 g
Water per query5 mL
Claude Sonnet 4
ProviderAnthropic
CategoryText / Chat
Inference LocationAWS US East (Virginia) / US West (Oregon)
Confidenceestimated
Efficiency TierStandard
Claude Sonnet 4.5
ProviderAnthropic
CategoryText / Chat
Inference LocationAWS / GCP
Confidenceestimated
Efficiency TierStandard
Frequently Asked Questions
Which uses more energy, Claude Sonnet 4 or Claude Sonnet 4.5?
Claude Sonnet 4 and Claude Sonnet 4.5 use roughly the same amount of energy per query. Claude Sonnet 4 uses 2.5 Wh per query, while Claude Sonnet 4.5 uses 2.6 Wh.
What is the carbon footprint difference between Claude Sonnet 4 and Claude Sonnet 4.5?
Claude Sonnet 4 and Claude Sonnet 4.5 use roughly the same amount of CO₂ per query. Claude Sonnet 4 emits 0.88 g of CO₂ per query compared to Claude Sonnet 4.5's 0.91 g.
Which is more environmentally friendly, Claude Sonnet 4 or Claude Sonnet 4.5?
Both models have very similar environmental footprints. Claude Sonnet 4 uses 2.5 Wh per query while Claude Sonnet 4.5 uses 2.6 Wh.
Calculate your footprint with these models
See how your daily usage of Claude Sonnet 4 and Claude Sonnet 4.5 adds up over time. Our calculator estimates energy, carbon, and water impact.
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