Chess vs GPT

OpenAI API Key

To play against OpenAI models, you'll need your own API key. This key is encrypted and stored only in your browser - we never see or store it on our servers.

🔒 Security Notice:

Your API key is encrypted and stored locally in your browser
Only use this on trusted devices and secure networks
We never send your key to any server other than OpenAI

Select AI Model:

Pricing (per 1M tokens):

Input —, Output —

Cost tracker:

Last move: — in / — out → $0.000000 | Game total: $0.000000

Show floating cost HUD during the game

Remember API key between browser sessions (less secure) Unchecked = API key clears when browser closes (more secure)