Llmchess for Web

Play against an AI opponent with LLMChess

LLMChess is a browser-based chess application that lets you play against large language model-powered opponents. The site supports both GPT-3.5-turbo and GPT-4 as the engine, and you pick which model to use by providing your API key. Games begin when you press the Start control and you always take the White pieces.

How to get started

• Enter a valid API key for the model you want to use (GPT-3.5-turbo or GPT-4).
• Click the Start button to begin a new match.
• Make your moves as White while the AI responds.

Interface and controls

LLMChess keeps the interface intentionally minimalist. A dedicated panel shows the move history as the game progresses, and the main options for managing the session are straightforward:

• A single Start control launches the match.
• Use the End control to stop the current game.
• Reloading the browser is an alternative way to reset the board and begin again.

Key strengths

• Easy-to-read move log displayed in its own pane.
• Simple controls make the experience accessible to casual players.
• Ability to choose between modern GPT models for varied playstyles.
• Designed for quick, browser-run matches without extra setup.

Important limitations

• There’s no public information about how the underlying GPT models were prepared for chess or how their playing strength was validated.
• Access requires an API key, which may be a barrier for some users.
• The tool is limited to Google Chrome, so other browsers are not supported.

Alternative option

ParakeetAI (paid) is a top-recommended substitute for users looking for a different commercial offering. It may provide another route to AI-driven chess experiences, though it requires a purchase or subscription.