Claude Opus 4.5 Environmental Impact
Major Opus upgrade with improved reasoning and efficiency
- Architecture
- Dense Transformer (decoder-only)
- Context
- 200,000 tokens
- Provider
- Anthropic
Energy per query
5.8 Wh
19x more than a Google search (0.3 Wh)
CO2 per query
2.0 g
US East (Virginia) grid (450 gCO₂/kWh)
Water per query
11 mL
~93 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 Opus 4.5 compare?
Detailed Breakdown
Energy Consumption
Claude Opus 4.5 consumes approximately 5.8 Wh per query — slightly more than Opus 4 but with substantially improved reasoning capabilities. The incremental energy cost reflects deeper model capacity rather than architectural changes.
Power Source & Carbon
Runs on AWS and Google Cloud. Anthropic has expanded inference regions to include European endpoints.
Water Usage
At ~10.8 mL per query, proportional to its energy consumption.
About Claude Opus 4.5
Claude Opus 4.5 is a text and chat model from Anthropic, released in November 24, 2025. Major Opus upgrade with improved reasoning and efficiency. Each query uses 5.8 Wh of energy and produces 2.0 g of CO₂. That's 19x 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 Opus 4.5. Actual consumption may vary significantly depending on batching, quantisation, and infrastructure optimisations that we cannot observe from outside.
Claude Opus 4.5 in Context
The efficiency alternative
Gemini Nano performs the same type of task using just 0.01 Wh per query — 100% less energy than Claude Opus 4.5. For a user sending 25 queries per day, switching would save 52.8 kWh per year.
At global scale
With an estimated 10M+ daily users averaging 10 queries each, Claude Opus 4.5 consumes roughly 580 MWh of electricity per day — enough to power 19333 homes.
Your yearly Claude Opus 4.5 footprint
At 25 queries per day, your annual Claude Opus 4.5 usage consumes 52.9 kWh — a meaningful fraction of household electricity. That produces 18.5 kg of CO₂.
Anthropic Claude Family
How energy efficiency has evolved across versions.
What does your Claude Opus 4.5 usage cost the planet?
Use our calculator to estimate your personal environmental footprint based on how often you use Claude Opus 4.5.
Calculate My ComputeFrequently Asked Questions
How much energy does Claude Opus 4.5 use per query?
Each Claude Opus 4.5 query consumes approximately 5.8 Wh of energy. This is 19x more than a traditional Google search (~0.3 Wh).
What is Claude Opus 4.5's carbon footprint?
Based on the carbon intensity of AWS / GCP, each query produces approximately 2.0 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 4.5 use?
Each query consumes approximately 11 mL of water, primarily used for cooling the data centers that process the request.
How does Claude Opus 4.5 compare to a Google search?
A Claude Opus 4.5 query uses 19x more than a Google search in terms of energy. A Google search uses approximately 0.3 Wh, while Claude Opus 4.5 uses 5.8 Wh.
Technical Details
Architecture
Dense Transformer (decoder-only)
Context window
200,000 tokens
Release date
2025-11-24
Open source
No
Training data cutoff
2025-10