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LiteLLM vs OpenRouter

Our take

Pick LiteLLM if platform teams who already pay model vendors and want keys, budgets, and fallbacks in one proxy. Pick OpenRouter if developers who want one router and will read per-model token rows. Skip LiteLLM if people who want a local chat app (Ollama) or traces-first observability (Langfuse). Skip OpenRouter if people who want a single branded chat seat (ChatGPT) or a local desktop runtime (LM Studio).

LiteLLM

LiteLLM

OpenAI-compatible AI gateway

OpenRouter

OpenRouter

multi-provider chat + OpenAI-compatible

Best for

LiteLLM One proxy in front of many model APIs

OpenRouter One key across many models

Free plan

LiteLLM $0 · , “free forever” on the page. You still pay upstream model APIs

OpenRouter $0 · 25+ free models; 50 requests/day; 5 workspaces; no card. Free models also 20 rpm

Lowest paid

LiteLLM Not published by the vendor

OpenRouter Not published by the vendor

Coding agent

LiteLLM Playground / Models / Agents / MCP / Guardrails

OpenRouter

Runs where

LiteLLM Local; you host it

OpenRouter

Watch out

LiteLLM $0 is the proxy, not the tokens

OpenRouter Free is 50 requests/day

Last checked

LiteLLM 2026-10-19 · litellm.ai/pricing

OpenRouter 2026-10-21 · openrouter.ai/pricing

Which one, then?

Pick LiteLLM if

platform teams who already pay model vendors and want keys, budgets, and fallbacks in one proxy.

Read the LiteLLM page

Other comparisons