Claude Sonnet 4.6 Environmental Impact
Near-Opus performance at Sonnet pricing — leads GDPval-AA at 1,633 Elo
- Architecture
- Dense Transformer with Extended Thinking
- Context
- 1,000,000 tokens
- Provider
- Anthropic
Energy per query
3.0 Wh
10x more than a Google search (0.3 Wh)
CO2 per query
1.1 g
US East (Virginia) grid (450 gCO₂/kWh)
Water per query
6 mL
~179 queries to fill 1 litre
Processing location
AWS / GCP
Provider
Anthropic
Category
Text / Chat
Grid carbon intensity
450 g CO2/kWh (25% renewable)
How does Claude Sonnet 4.6 compare?
Detailed Breakdown
Energy Consumption
Claude Sonnet 4.6 delivers near-Opus-level performance at roughly half the energy cost (~3.0 Wh per query). It leads the GDPval-AA benchmark at 1,633 Elo for expert office work and is the first Sonnet preferred over previous-gen Opus in coding evaluations. The 1M context window at standard Sonnet pricing makes it exceptionally cost-efficient per capability.
Power Source & Carbon
Runs on AWS and Google Cloud. As the new default model for free-tier Claude users, Sonnet 4.6 has extremely high query volume, making its per-query efficiency particularly impactful for aggregate emissions.
Water Usage
At ~5.6 mL per query. As the highest-volume Anthropic model, even small per-query improvements translate to massive aggregate water savings.
About Claude Sonnet 4.6
Claude Sonnet 4.6 is a text and chat model from Anthropic, released in February 17, 2026. Near-Opus performance at Sonnet pricing — leads GDPval-AA at 1,633 Elo. Each query uses 3.0 Wh of energy and produces 1.1 g of CO₂. That's 10x the energy of a Google search — reflecting the computational demands of text and chat.
These figures are estimates derived from hardware specifications and API benchmarks — Anthropic has not published official energy data for Claude Sonnet 4.6. Actual consumption may vary significantly depending on batching, quantisation, and infrastructure optimisations that we cannot observe from outside.
Claude Sonnet 4.6 in Context
At global scale
With an estimated 10M+ daily users averaging 10 queries each, Claude Sonnet 4.6 consumes roughly 300 MWh of electricity per day — enough to power 10000 homes.
Your yearly Claude Sonnet 4.6 footprint
At 25 queries per day, your annual Claude Sonnet 4.6 usage consumes 27.4 kWh — roughly what a fridge uses in a month. That produces 9.6 kg of CO₂.
Anthropic Claude Family
How energy efficiency has evolved across versions.
What does your Claude Sonnet 4.6 usage cost the planet?
Use our calculator to estimate your personal environmental footprint based on how often you use Claude Sonnet 4.6.
Calculate My ComputeFrequently Asked Questions
How much energy does Claude Sonnet 4.6 use per query?
Each Claude Sonnet 4.6 query consumes approximately 3.0 Wh of energy. This is 10x more than a traditional Google search (~0.3 Wh).
What is Claude Sonnet 4.6's carbon footprint?
Based on the carbon intensity of AWS / GCP, each query produces approximately 1.1 g of CO2. The grid in this region has a carbon intensity of 450 g CO2/kWh with 25% renewable energy.
How much water does Claude Sonnet 4.6 use?
Each query consumes approximately 6 mL of water, primarily used for cooling the data centers that process the request.
How does Claude Sonnet 4.6 compare to a Google search?
A Claude Sonnet 4.6 query uses 10x more than a Google search in terms of energy. A Google search uses approximately 0.3 Wh, while Claude Sonnet 4.6 uses 3.0 Wh.
Technical Details
Architecture
Dense Transformer with Extended Thinking
Context window
1,000,000 tokens
Release date
2026-02-17
Open source
No
Training data cutoff
2026-01