Free OpenAI-compatible API — drop-in ChatGPT API replacement. Use OpenAI SDK with Groq, Gemini, Mistral, Cohere, OpenRouter. No OpenAI bill, no credit card. GPT-4 / GPT-3 alternatives, chat completions endpoint.
openai gpt-3 openai-api gpt-4 chatgpt chatgpt-api gpt-api chatgpt-free gpt-alternative free-chatgpt chat-completions openai-sdk completions-api openai-alternative openai-compatible free-openai api-compatible chatgpt-replacement openai-drop-in openai-format
-
Updated
Aug 10, 2026