7 Best EcoGPT Alternatives in 2026 (That Actually Show Their Numbers)

EcoGPT is popular for a simple reason: people want AI that doesn’t cost the planet, and “chat to plant trees” sounds like exactly that.

But the trees don’t touch AI’s real footprint, which is the electricity and water a data center uses the moment you hit send. EcoGPT doesn’t publish those numbers, doesn’t name its AI models, and says other providers in other locations also answer chats. (We go through the evidence in our EcoGPT review.)

If you want an AI app that’s greener in ways you can actually check, here are seven alternatives.

Viro AI is ours, so we’ve judged every app, ours included, on the same four questions:

1. Where does it run, and what powers it?
2. Does it publish energy figures?
3. Is it honest about its limits?
4. Is it good enough to be your only AI app? A second app you also need is not greener.

EcoGPT alternatives at a glance

App	Why it’s greener than EcoGPT	Published numbers	Best for
Viro AI	Own model on hydro, geothermal and wind; big models energy matched	Energy on every reply	One app with ChatGPT, Claude, Gemini and a clean default
Apple Intelligence	Runs on your device: no data center	Viro counts it as 0 Wh of data-center energy	Quick, private tasks
GreenPT	European data centers on renewable power	PUE and energy reporting	EU hosting
Ecosia AI	Small models; €18M invested in renewables	Measured with public tools	AI search
Le Chat (Mistral)	Full life-cycle study of its model	Yes, life-cycle figures	Fast, capable chat
Google Gemini	Most transparent of the big three	0.24 Wh and 0.26 mL per median prompt	Frontier-model power
ChatGPT	Published per-query energy	About 0.34 Wh per average query	The most popular assistant
EcoGPT, for comparison	Small models; plants trees	None

1. Viro AI: the green default, with the big models included

Viro AI is the closest swap for EcoGPT: a free, friendly AI app built around the climate. The difference is where the green part happens.

• Clean power where the AI runs. Viro’s own model runs in named data centers in Iceland, Norway, Finland and Ireland, on grids powered by hydro, geothermal and wind, with cold-air and closed-loop cooling. No trees, no offsets. See the data centers.
• Numbers on every reply. Each answer shows its estimated energy.
• The best models, honestly labelled. ChatGPT, Claude and Gemini are built in. They run on their makers’ servers, so Viro labels them Energy matched and funds new renewable energy to cover their electricity.
• No data center at all, when you want. On an Apple silicon Mac, you can run Apple Intelligence on your own Mac.
• Free plan with unlimited chat. An ad-free plan is $4.99 a month.

Best for: anyone who wants one AI app that’s greener by default and still has the most capable models when you need them.

2. Apple Intelligence: no data center at all

The lightest AI answer is one that never leaves your device. Apple’s on-device model runs on the chip in recent iPhones, iPads and Macs, so there’s no data center electricity and no cooling water for the answer.

It’s a small model, great for rewriting, summarizing and quick questions, not for deep research. You can use it in Apple’s own apps, or chat with it like ChatGPT in Viro. Check which devices support it.

Best for: quick, private, everyday tasks.

3. GreenPT: European AI on renewable power

GreenPT, a Dutch company, runs its chat in European data centers it says are powered by 100% renewable energy, and reports a power usage effectiveness of 1.25. It’s also upfront that it can’t yet verify the open models it uses were trained on renewable energy. That kind of honesty is exactly what’s missing from EcoGPT.

Best for: people in Europe who want EU hosting and renewable power.

4. Ecosia AI: AI search from a climate company

Ecosia, the tree-planting search engine, added AI overviews and an AI chat mode in December 2025. Unlike EcoGPT, it doesn’t rest the green case on trees alone: it uses small models, measures energy with the public AI Energy Score and Ecologits tools, skips energy-heavy features like video, and has invested €18 million in renewable energy projects. You can turn the AI off with one click.

It’s a search experience rather than a full assistant. See Ecosia AI vs Viro AI.

Best for: people who mostly want AI answers inside search.

5. Le Chat by Mistral: the most open about its footprint

Mistral, the French AI company, published one of the first complete life-cycle analyses of an AI model, covering training, hardware and everyday use. Le Chat isn’t sold as “green AI,” but Mistral has told people more about its environmental cost than almost anyone. That’s the opposite of EcoGPT’s approach.

Best for: a fast, capable assistant from a company that shows its work.

6. Google Gemini: big model, published numbers

Google measured a median Gemini text prompt at 0.24 watt-hours of electricity and 0.26 mL of water, and reported a 33-fold drop in energy per prompt over a year. Gemini runs on whatever powers Google’s data centers, so it isn’t green by default, but you know what each answer costs.

Best for: frontier-model power with real disclosure.

7. ChatGPT: the benchmark

ChatGPT isn’t an eco app, but it belongs on this list because people often ask whether EcoGPT is better than ChatGPT. OpenAI’s CEO says an average ChatGPT query uses about 0.34 watt-hours. EcoGPT gives no figure to compare.

ChatGPT also runs much larger models than EcoGPT, which says its models have about a tenth of the big providers’ active parameters. Smaller models use less energy per answer, but they know less and make more mistakes.

Best for: the most popular all-round assistant. If you like ChatGPT but want a greener default, you can use it inside Viro alongside a clean model.

Is EcoGPT better than ChatGPT?

For the planet, nobody can say, because EcoGPT publishes no energy, carbon or water figures. For answer quality, ChatGPT’s far larger models will usually win on hard questions. For fun, EcoGPT has a cartoon forest and games. If what you really want is less impact without giving up quality, use the smallest model that does the job, and choose an app that tells you what it uses.

What about the trees?

Tree planting through a good charity is real and worthwhile. It just isn’t a fix for AI. The energy is used in seconds in a data center; the tree grows for decades somewhere else, and many seedlings don’t survive. An app that rewards you with trees for chatting more is rewarding more energy use. More in is EcoGPT greenwashing?

How to choose

• Want one app that does it all? Viro AI.
• Want the lightest possible footprint? Apple Intelligence on your own device.
• Want EU hosting? GreenPT.
• Mostly search? Ecosia.
• Want maximum transparency from a big lab? Le Chat or Gemini.

For the full ranking, see the most eco-friendly AI chatbots, or read what makes AI eco-friendly.

Try Viro AI free: ChatGPT, Claude and Gemini in one app, with Viro’s own model on renewable power.

Frequently asked questions

What is the best alternative to EcoGPT?

It depends on what you want. For a full AI assistant that runs on renewable power and shows its energy, Viro AI. For the lightest possible answers, an on-device model like Apple Intelligence. For European hosting on renewable power, GreenPT. For AI search from a climate company, Ecosia.

Is EcoGPT better than ChatGPT?

For the environment, there's no way to tell: EcoGPT publishes no energy, carbon or water figures, while OpenAI says an average ChatGPT query uses about 0.34 watt-hours. For answer quality, ChatGPT runs far larger models; EcoGPT says its models have about a tenth of the big providers' active parameters and doesn't name them.

Is there an AI that plants trees besides EcoGPT?

Ecosia, the search engine, funds tree planting and now offers AI answers. But tree planting doesn't reduce the electricity or water an AI uses. For AI itself, what matters is the power behind the data center and whether the company publishes its numbers.

What should I look for in a green AI app?

Four things: it says where its servers are and what powers them, it publishes energy figures, it's honest about what those figures leave out, and it's good enough that you don't need a second AI app anyway.

Is there a free eco-friendly AI?

Yes. Viro AI's free plan is unlimited and runs its own model on hydro, geothermal and wind. Apple Intelligence is free on eligible devices and needs no data center. Ecosia and GreenPT also have free options.

Sources

1. Our environmental claims, EcoGPT, read November 2026
2. About EcoGPT, EcoGPT, read November 10, 2026
3. Sustainability, GreenPT, read November 2026
4. Ecosia AI launch, Ecosia, December 2025
5. Our contribution to a global environmental standard for AI, Mistral AI, July 2025
6. How much energy does Google's AI use? We did the math, Google Cloud, August 2025
7. The Gentle Singularity, Sam Altman, OpenAI, June 2025
8. Apple Intelligence in Viro, Viro Help Center

Cover photo by Peter Robbins on Unsplash