What is OpenRouter used for?

OpenRouter is used for using LLM APIs, building AI agents and chatting with an AI assistant. On AIToolMaps it ranks #4 of 11 for using LLM APIs.

Yes. OpenRouter has a free plan.

What platforms does OpenRouter run on?

OpenRouter runs on Web and API.

Does OpenRouter have an API?

Yes. OpenRouter offers an API, so developers can use it from their own code.

What are the best alternatives to OpenRouter?

The closest alternatives are UncensoredLabs, DeepSeek and Hugging Face, which do most of the same jobs. DeepSeek is the closest one with a free plan.

OpenRouter

One API endpoint for calling many AI models from different providers, with automatic fallback

✓ Verified against openrouter.ai · Nov 4, 2026Free tierWeb · API

Visit openrouter.ai

The OpenRouter home page — Captured from openrouter.ai on Nov 4, 2026

What it does

OpenRouter is an AI tool for using LLM APIs, building AI agents and chatting with an AI assistant. It has a free plan.

OpenRouter is a hosted gateway that gives developers a single API endpoint to reach models from a wide range of AI providers. The API accepts standard HTTP requests, works as a drop-in replacement for the OpenAI SDK, and is paired with a web chat interface for trying models directly. OpenRouter watches provider response times, error rates and availability, then retries another provider when a request fails. Teams can pin traffic to preferred providers, let requests go to the most cost-effective model, or restrict prompts to providers that meet a chosen data policy. Client SDKs and an Agent SDK that handles tool calls, loops and state are available when raw HTTP is not enough. The free plan includes 25 or more free models, with request caps and a daily limit, along with community support. Paid use is pay-as-you-go with no minimum and no lock-in: inference is billed at the provider's list price, and OpenRouter charges 5.5% when you buy credits on the Standard plan (8% on Business). Failed attempts are not charged for model tokens. Business and Enterprise tiers add in-region routing and data policy controls.

Single endpoint across providers
Automatic provider fallback
OpenAI-compatible requests
Client and agent SDKs
Hosted web chat
Model and price catalog
Per-key credit caps
Data policy routing

Verified facts

Each row links to the page we checked it on.

API	Yes, single unified API endpoint	openrouter.ai	✓ Nov 4, 2026
Free plan	Yes, 25+ free models	openrouter.ai	✓ Nov 4, 2026
Paid plans from	Standard pay-as-you-go, no minimum: inference at provider list price plus a 5.5% fee on credit purchases	openrouter.ai	✓ Nov 4, 2026
Platforms	Web and API	openrouter.ai	✓ Nov 4, 2026
Pricing	Free plan plus paid pay-as-you-go plans	openrouter.ai	✓ Nov 4, 2026

OpenRouter pricing in detail →

What you can do with it

Using LLM APIs#4 of 11 Building AI agents#8 of 20 Chatting with an AI assistant#20 of 23

Good at

One key and endpoint cover many providers
Free tier with 25+ models to test on
No subscription, minimum spend or contract
Failed requests are not billed for model tokens

Watch out for

Free models carry a strict daily request cap
Free plan leaves out auto-routing and preferred provider selection
Paid use requires buying credits first, with a fee added at purchase

Common questions

What is OpenRouter used for?: OpenRouter is used for using LLM APIs, building AI agents and chatting with an AI assistant. On AIToolMaps it ranks #4 of 11 for using LLM APIs.
Is OpenRouter free?: Yes. OpenRouter has a free plan.
What platforms does OpenRouter run on?: OpenRouter runs on Web and API.
Does OpenRouter have an API?: Yes. OpenRouter offers an API, so developers can use it from their own code.
What are the best alternatives to OpenRouter?: The closest alternatives are UncensoredLabs, DeepSeek and Hugging Face, which do most of the same jobs. DeepSeek is the closest one with a free plan.

Reviews

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Listing history

Nov 4, 2026Checked against openrouter.ai
Sep 24, 2026Listed