Claude Opus 4 Environmental Impact

Energy Consumption

Claude Opus 4 is Anthropic's most capable and most energy-intensive model, consuming approximately 5.5 Wh per query — estimated at roughly 2x the energy of Claude 3.7 Sonnet based on API pricing differentials and model scale. Opus models are significantly larger than Sonnet variants.

Power Source & Carbon

Runs on AWS infrastructure in US East (Virginia) and US West (Oregon), with additional capacity on Google Cloud. Anthropic has not published Scope 1, 2, or 3 emissions in any public filing as of 2026.

Water Usage

At approximately 10.3 mL per query (derived from 5.5 Wh at AWS's WUE of ~1.87 mL/Wh), Claude Opus 4 has a moderate water footprint proportional to its energy consumption.

How much energy does Claude Opus 4 use per query?

Each Claude Opus 4 query consumes approximately 5.5 Wh of energy. This is 18x more than a traditional Google search (~0.3 Wh).

What is Claude Opus 4's carbon footprint?

Based on the carbon intensity of AWS US East (Virginia) / US West (Oregon), each query produces approximately 1.9 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 Opus 4 use?

Each query consumes approximately 10 mL of water, primarily used for cooling the data centers that process the request.

How does Claude Opus 4 compare to a Google search?

A Claude Opus 4 query uses 18x more than a Google search in terms of energy. A Google search uses approximately 0.3 Wh, while Claude Opus 4 uses 5.5 Wh.

Architecture

Dense Transformer (decoder-only)

Context window

200,000 tokens

Release date

2025-05-22

Open source

No