How to sell spare AI tokens.
Sign in, paste a key, pick models, set a floor. Get paid USDC per request. Cash out when you want.
1. Sign in
Sign in. We make a wallet for you, or use one you already have. Payouts go there.
2. Check your provider
Make sure the account lets you sell unused credits. If it does not, stop.
3. Connect a key
Pick the provider. Venice, Capminal, OpenRouter, OpenAI, Anthropic, Gemini, DeepSeek, Groq, Mistral, and more. Paste the key. Surplus checks it and stores it encrypted. We never keep a copy.
4. Pick models
We preselect up to eight text models that have buyers. Change the set if you want.
5. Set your floor
Included 0.02× · Leftover 0.05× · At cost 1.0×. Daily cap per model, minimum $0.50. Auto-price never goes under the floor.
6. List
Each model goes live on its own. Price stays just under the cheapest live seller, never under your floor.
7. Cash out
Revolut, Monzo, Chime, and Zelle work immediately. Venmo, Cash App, Wise, and PayPal after a one-time Verify on desktop Chrome. Withdraw the full order, or send USDC on Base.
Questions
- Who holds my key?
- Surplus. Encrypted per listing. We never keep it.
- Do I need another account?
- No. Sign in here. That's it.
- What does it cost?
- Listing is free. Cash-out is the live rate, no spread we add.