FastChat
Distributed multi-model LLM serving system with web UI and OpenAI-compatible APIs.
Pricing
See website
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
—Overview
What is FastChat?
FastChat is a distributed system for serving large language models, offering both a web interface and RESTful APIs compatible with OpenAI. It's designed to support multiple models and provide scalable performance.
Key differentiator
“FastChat stands out as an open-source, distributed system with both web UI and OpenAI-compatible APIs, making it ideal for developers needing flexibility in serving multiple large language models.”
Capability profile
Strength Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
Fit analysis
Who is it for?
✓ Best for
Teams needing to serve and scale multiple large language models simultaneously
Developers looking for an OpenAI-compatible API for their projects
Projects requiring a web interface alongside RESTful APIs for LLM access
✕ Not a fit for
Users who prefer fully managed cloud services without self-hosting requirements
Applications that require real-time streaming capabilities (batch-only architecture)
Cost structure
Pricing
Free Tier
None
Starts at
See website
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with FastChat
Step-by-step setup guide with code examples and common gotchas.