Think for yourself. Prompt light.
Use AI on purpose: the lightest model that works, with the energy impact of every answer shown. TreadLightlyAI is a thinking tool for people who want AI's capabilities without ignoring its full cost.
You can run on 100% renewable energy for $0. Free, Starter and Builder all use renewable energy and our hosting data center heats homes instead of using air conditioning.
Get started freeResearch with citations, or teaching, with the energy the conversation used.
Thinking modes
Each mode changes how the AI approaches your prompt. Balanced, Challenge, Research, Write, Teach, Plan, and Audit.
Real-time cost tracking
Every prompt has an energy and token cost. We show you both, on every message. Knowing what you spend changes how you prompt.
Green infrastructure
Hosted in Infomaniak's Geneva data center, which recovers 100% of the electricity it uses as heat for 6,000 homes. Their data centers run on local renewable energy at an annual PUE below 1.1, cooled by filtered outside air instead of refrigerant.
10% to AI safety
10% of all revenue funds AI safety research and advocacy, disbursed every six months and posted on our transparency page. Not a pledge. A line item. The risks of poorly aligned AI are real and present.
What is TreadLightlyAI?
TreadLightlyAI is a responsible AI thinking tool for people who want AI's capabilities without ignoring what they cost: energy, money, and societal risk. We run small and medium AI models on renewable energy infrastructure and show real-time energy and token costs on every response. We deliberately exclude energy-intensive options like image generation and frontier models. We also offer Claude's small and medium models from Anthropic, because Anthropic has shown stronger commitment to AI safety than most of the industry. Every prompt routes through one of our thinking modes, designed to sharpen reasoning quality rather than just return fast answers. 10% of every subscription funds AI safety research and advocacy.
