AI API Gateway Self Hosted: One Key for All LLM Providers
An AI API gateway self hosted unifies OpenAI, Anthropic, DeepSeek and more behind one endpoint. We show the setup with LiteLLM and one-api.
💡 What You Will Learn
An AI API gateway self hosted unifies OpenAI, Anthropic, DeepSeek and more behind one endpoint. We show the setup with LiteLLM and one-api.
📜 Table of Contents
Every LLM provider has its own SDK, pricing, and rate limits. An AI API gateway self hosted gives you one OpenAI-compatible endpoint in front of them all - your application code never changes when you switch or add providers.
Why Self-Host a Gateway
LiteLLM (BerriAI/litellm, 55,701 stars) is the leading open-source choice: a Python server exposing /chat/completions that proxies to 100+ providers, with load balancing, automatic fallbacks, budget limits, and a usage dashboard. one-api (songquanpeng, 36,211 stars) is the popular alternative in the Chinese ecosystem, supporting OpenAI, Anthropic, Gemini, DeepSeek, Qwen and more with key management and distribution.
Deployment is a single container: docker run with a config.yaml listing providers and keys, then point your app at http://localhost:4000. Add virtual keys so each team member or service gets its own budget and audit trail. Fallback chains (primary fails to secondary) alone justify the setup - one provider outage stops costing you downtime.
Comparison
| Feature | LiteLLM | one-api |
|---|---|---|
| Providers | 100+ | OpenAI/Anthropic/DeepSeek/Qwen |
| Load balancing | Yes | Yes |
| Budget limits | Yes | Yes |
| Stars | 55,701 | 36,211 |
FAQ
Q: Is a gateway a single point of failure?
A: Yes, unless you run two instances behind a load balancer. The gateway itself is lightweight - this is a solved problem.
Q: Does it add latency?
A: 5-15ms of proxy overhead typically - negligible next to LLM response times of seconds.
Written by our editorial team; tools listed here are tested or verified against public sources. Links point to official sites or GitHub repos for reference only โ no paid placements.
