AI has a physical footprint. Data centers use electricity, and water can be involved in cooling and electricity generation. Phones use energy too. A thoughtful comparison needs to keep those facts together.
What does sustainable AI mean for Pond?
If you’re looking for sustainable or eco-friendly AI, ask what a product actually changes. Pond’s choice is to create everyday answers on your iPhone. This can replace comparable cloud AI requests; it is not a claim of zero impact or proven overall environmental superiority.
A different place to generate answers
Pond moves its core answer generation to your iPhone. If you use it instead of a comparable cloud AI request, that request’s cloud inference is avoided. This does not mean zero impact: model training, device manufacturing, downloads and the energy your phone uses still exist. Online tools also use infrastructure.
We do not claim that every Pond answer is environmentally better in every situation. We have not measured a full life-cycle comparison for your phone and a particular cloud provider.
The cloud-water scenario
Pond uses a clearly qualified, high-water cloud scenario from Li and colleagues’ 2025 CACM article. Its historical modeled GPT-3 case includes 47.506 mL per request for a particular location and set of conditions.
Pond divides that value by an assumed 150 generated answer words and rounds to 0.317 mL per generated answer word. That word-based scaling is Pond’s linear assumption; the paper does not establish a universal per-word rate.
For illustration, 100 eligible generated answer words correspond to 31.7 mL in this scenario. Input words are not counted. The calculation has no per-exchange cap, and previews, failed answers and deterministic responses do not earn credit.
An estimate, not a meter
The number is not current telemetry from a provider, measured water saved or a prediction of your own environmental impact. It is conditional on replacing comparable cloud use. It does not subtract your phone’s energy or local impact, so it is not a net savings figure. Cloud systems, locations and workloads vary considerably.
And the growing pond?
Your pond is a virtual world that grows as you chat. Its plants and wildlife don’t represent real habitats restored or water saved.
Read how Pond works for the product context. The published research PDF contains the original study and its assumptions.