OpenGPT
One chat UI.
All major AI models.
OpenGPT is an open-source, unified chat interface for GPT-5, Claude, Gemini, Grok, and open-source models. Switch models instantly — without switching tools or workflows.
Multi-model conversations
Switch between GPT-5, Claude, Gemini, Grok, and open models inside the same interface.
Open-source & self-hosted
No vendor lock-in. Run OpenGPT locally or deploy it on your own infrastructure.
Unified chat history
One conversation history across all models — no fragmented tools or tabs.