Lobe Chat vs Open WebUI
Comparing two open source alternatives to ChatGPT and Deepseek and Claude . Use the comparison below to decide which one fits your needs.
Lobe Chat
Open-source AI chat and agent platform with multi-provider support, RAG, plugins, and an agent marketplace — self-hostable ChatGPT alternative.
Side-by-side comparison
Similar open source alternatives
Ollama
Get up and running with Llama 3.3, DeepSeek-R1, Phi-4, Gemma 3, Mistral Small 3.1 and other large language models.
Alternative to: 
ChatGPT
ChatGPT
Onyx
Onyx is an open-source AI chat and enterprise search platform with RAG that works with every LLM. Bring your own model and unify all your team's knowledge.
Alternative to: 
Glean
Glean
Pi
Open-source AI agent toolkit with an interactive coding agent CLI, unified multi-provider LLM API, and TUI libraries.
Alternative to: 
Claude
Claude