Claude Haiku 4.5 Environmental Impact
Anthropic's fastest model — near-Sonnet 4 quality at 1/3 the cost
- Architecture
- Dense Transformer with Extended Thinking
- Context
- 200,000 tokens
- Provider
- Anthropic
Energy per query
0.60 Wh
2x more than a Google search (0.3 Wh)
CO2 per query
0.21 g
US East (Virginia) grid (450 gCO₂/kWh)
Water per query
1 mL
~909 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 Haiku 4.5 compare?
Detailed Breakdown
Energy Consumption
Claude Haiku 4.5 is Anthropic's fastest and most cost-efficient model at ~0.6 Wh per query. It matches Claude Sonnet 4 performance at roughly 1/3 the cost ($1/$5 per M tokens) and is the first Haiku with extended thinking, computer use, and context awareness. It achieved 73.3% on SWE-bench Verified — remarkable for a model in this efficiency class. As the highest-volume Anthropic model, small per-query efficiency gains have massive aggregate impact.
Power Source & Carbon
Runs on AWS and Google Cloud. As the default model for cost-sensitive and high-volume applications, it processes the most queries of any Anthropic model.
Water Usage
At ~1.1 mL per query, Claude Haiku 4.5 has one of the lowest water footprints among commercial API models.
About Claude Haiku 4.5
Claude Haiku 4.5 is a text and chat model from Anthropic, released in October 15, 2025. Anthropic's fastest model — near-Sonnet 4 quality at 1/3 the cost. Each query uses 0.60 Wh of energy and produces 0.21 g of CO₂. That's about 2.0x what a Google search consumes.
These figures are estimates derived from hardware specifications and API benchmarks — Anthropic has not published official energy data for Claude Haiku 4.5. Actual consumption may vary significantly depending on batching, quantisation, and infrastructure optimisations that we cannot observe from outside.
Claude Haiku 4.5 in Context
Your yearly Claude Haiku 4.5 footprint
At 25 queries per day, your annual Claude Haiku 4.5 usage consumes 5.5 kWh — comparable to running a LED light bulb for a month. That produces 1.9 kg of CO₂.
Key Insights
Anthropic Claude Family
How energy efficiency has evolved across versions.
What does your Claude Haiku 4.5 usage cost the planet?
Use our calculator to estimate your personal environmental footprint based on how often you use Claude Haiku 4.5.
Calculate My ComputeFrequently Asked Questions
How much energy does Claude Haiku 4.5 use per query?
Each Claude Haiku 4.5 query consumes approximately 0.60 Wh of energy. This is 2x more than a traditional Google search (~0.3 Wh).
What is Claude Haiku 4.5's carbon footprint?
Based on the carbon intensity of AWS / GCP, each query produces approximately 0.21 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 Haiku 4.5 use?
Each query consumes approximately 1 mL of water, primarily used for cooling the data centers that process the request.
How does Claude Haiku 4.5 compare to a Google search?
A Claude Haiku 4.5 query uses 2x more than a Google search in terms of energy. A Google search uses approximately 0.3 Wh, while Claude Haiku 4.5 uses 0.60 Wh.
Technical Details
Architecture
Dense Transformer with Extended Thinking
Context window
200,000 tokens
Release date
2025-10-15
Open source
No
Training data cutoff
2025-09