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♟️ LLMChess.ai
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LLM vs. LLM
HUMAN vs. LLM
HUMAN vs. LLM
LLM vs. LLM Settings
LLM Settings
Black Model
GPT-3.5 Turbo
GPT-4o
GPT-4.1
GPT-5 Mini
Claude 3.5 Sonnet
Claude Sonnet 4
Gemini 2.5 Flash
Grok 4 Fast
DeepSeek V3
Qwen 3 235B
White Model
GPT-3.5 Turbo
GPT-4o
GPT-4.1
GPT-5 Mini
Claude 3.5 Sonnet
Claude Sonnet 4
Gemini 2.5 Flash
Grok 4 Fast
DeepSeek V3
Qwen 3 235B
Advanced Settings
Black Base URL
Black API Key
Black Model
White Base URL
White API Key
White Model
Swap Settings
Works with OpenAI, llama.cpp, vLLM, LiteLLM, Azure OpenAI, and any OpenAI‑compatible endpoint.
Start Game
HUMAN vs. LLM Settings
LLM Settings
Model
GPT-3.5 Turbo
GPT-4o
GPT-4.1
GPT-5 Mini
Claude 3.5 Sonnet
Claude Sonnet 4
Gemini 2.5 Flash
Grok 4 Fast
DeepSeek V3
Qwen 3 235B
LLM plays
Black
White
Advanced Settings
Base URL
API Key
Model
System Prompt
Reset Prompt
Clear Settings
Works with OpenAI, llama.cpp, vLLM, LiteLLM, Azure OpenAI, and any OpenAI‑compatible endpoint.
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LLM Output
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LLM 1 (Black)
LLM 2 (White)
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