LiteLLM — Open-Source LLM Gateway
Provider 
Founded 2023
Sells To Enterprise, Small Business
Pricing Model Recurring, Software
Ownership Open-Source, Venture Capital

An open-source AI gateway and proxy that calls many large language model APIs in the OpenAI format.
The LiteLLM gateway is an open-source router and proxy that lets applications call large language model APIs from providers such as OpenAI, Anthropic, Microsoft Azure, Amazon Bedrock, Google Vertex AI, and Cohere through a single OpenAI-format interface. It ships as a Python SDK and a self-hosted server, with routing, load balancing, fallbacks, and spend management built in.
The gateway is distributed under an MIT license and is commonly self-hosted by platform teams that want control over multi-provider model access. A commercial enterprise tier adds administration, security, and support capabilities on the same core.
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| Attribute | LiteLLM — Open-Source LLM Gateway | AI Gateway | Aptible LLM Gateway | Cloudflare AI Gateway | Conifer Gateway, Console, Router | Enterprise GenAI Portal | Experiential — Open Source AI Gateway | Fugu, Fugu Ultra | LLM Gateway and Observability | OpenRouter — Unified LLM API Gateway | Requesty — AI Gateway | TrustGate | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Provider | |||||||||||||
| Founded | 2023 | 2015 | 2013 | 2009 | 2026 | 2016 | 2026 | 2023 | 2023 | 2023 | 2023 | 2022 | |
| Sells To | Enterprise, Small Business | Small Business | Small Business | Enterprise, Small Business | Developer, Enterprises | Enterprise | Developer | Enterprise, Government | Enterprise | Developer | — | — | |
| Pricing Model | Recurring, Software | Recurring | Recurring | Recurring, SaaS, Usage-based | Usage-based | Recurring | Usage-based | B2B Subscription | Recurring, SaaS | Usage-based | — | — | |
| Ownership | Open-Source, Venture Capital | Venture Capital | Venture Capital | Private Equity, Public, Venture Capital | Venture-backed private company | Venture Capital | Venture-backed private company | Venture-backed private company | Venture Capital | Venture-backed private company | — | — |
Provider 
Founded 2023
Sells To Enterprise, Small Business
Pricing Model Recurring, Software
Ownership Open-Source, Venture Capital
Provider 
Founded 2015
Sells To Small Business
Pricing Model Recurring
Ownership Venture Capital
Provider 
Founded 2013
Sells To Small Business
Pricing Model Recurring
Ownership Venture Capital
Provider 
Founded 2009
Sells To Enterprise, Small Business
Pricing Model Recurring, SaaS, Usage-based
Ownership Private Equity, Public, Venture Capital
Provider 
Founded 2026
Sells To Developer, Enterprises
Pricing Model Usage-based
Ownership Venture-backed private company