Simple, powerful, sustainable
From signing up to building your own custom AI agents — here's everything you need to know.
Create a free account
Sign up with your email or social account via Clerk. No credit card required. You get 300 credits every month automatically — each message sent and each AI reply counts as one credit.
Start a conversation
Type a message, upload images or documents, or choose a quick-start prompt. Pick from Claude Haiku, Gemini Flash, or GPT-nano depending on your task. Hit send and get a response in seconds.
Organise with projects
Group related chats into project folders. Each project can have its own AI instructions — ideal for ongoing work like "my coding assistant" or "marketing copy helper".
Build custom agents
Create AI agents with custom names, avatars, system prompts, and uploaded knowledge files. Start a chat from any agent in the sidebar — they remember their persona every time.
Chat sustainably
Behind the scenes, EcoChat calculates the carbon footprint of every AI inference and purchases certified offset credits on your behalf. Every conversation you have is net-zero carbon.
Available AI models
All lightweight. All capable. Switch mid-conversation anytime.
Claude Haiku 4.5
Anthropic
Nuanced reasoning & coding
Gemini 3 Flash
Multimodal & speed
GPT-5 Nano
OpenAI
Broad knowledge & writing