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LLM Gateway
Open-source OpenAI-compatible gateway routing one API to 200+ models across 40+ providers
0Visit LLM Gateway
https://llmgateway.io/
About LLM Gateway
LLM Gateway is an open-source, OpenAI-compatible routing layer that puts one API in front of more than 200 models across 40-plus providers, including OpenAI, Anthropic and Google. The problem it solves is operational rather than intellectual: teams that use several providers end up juggling separate keys, separate dashboards, separate billing and separate SDK quirks, and switching provider for a given model means a code change. Pointing an existing OpenAI-compatible client at the gateway collapses that into one endpoint with real-time cost tracking across all of it. Around the core routing sit the features that make a gateway worth running in production — automatic provider selection and custom routing rules, budgets and spend controls, prompt caching, guardrails, reliability failover, and activity logs with exportable data. The commercial model is unusual and worth reading carefully: the free tier is free forever with all 200+ models available and bring-your-own-keys included, and the platform fee is 5% on credit usage rather than a monthly subscription, so cost scales with spend rather than seats. Metadata retention is free while full payload storage is billed at $0.01 per million tokens. Supporting surfaces include an MCP server, an AI SDK provider, a token cost calculator, model comparison and rankings pages, and the vendor states it is SOC 2 Type II certified.
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Key Features
LLM Gateway Pros & Cons
✅ Pros
- +Usage-based 5% fee instead of a seat subscription
- +BYOK on the free tier means you can route without moving billing
- +SOC 2 Type II certified, which is rare for an open-source gateway
⚠️ Cons
- −The 5% platform fee compounds on top of provider costs at scale
- −Full payload logging is billed separately from metadata
- −Free-tier log retention is capped at 30 days
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Alternatives to LLM Gateway
View all LLM Gateway alternatives →Agent connectivity: not yet verified