# Free AI API list: run it free, or from your agent

Free AI model variants you can call by API, and the cheapest paid models for your token mix.

## Prompt

Use looot to find free AI models I can call by API today. 1. Set up https://looot.ai/skill.md. 2. Run the OpenRouter model list endpoint. 3. Keep the models with a zero price for input and output tokens. 4. Return a table of model id, maker and context length, and the three cheapest paid models with a context of at least [size] tokens.

## What it needs

Optional: a provider and your share of input tokens

## What comes back

- free model ids with context length
- cheapest paid models for your mix
- input and output price per million tokens
- the date the list was read

## Endpoints and providers

None. The tool on the web page runs in the browser and calls no endpoint.

## What it costs

Nothing. The tool on the web page runs in the visitor's browser: no account, no API call and no limit per hour. The prompt above runs the same job from your own looot account with current data, billed per call.

## Prototype for free

Build a first version on a free variant before you pay for tokens.

## Find a fallback

Pick a cheap paid model for when a free cap runs out.

## Agents on a budget

Give a side agent a free or near-free model and save the big one for hard steps.

## Export the list

Download the rows as CSV and keep them next to your config.

## Are there free AI APIs?

Yes. Some models have free variants with a zero token price. They come with request caps, and the list changes. The free rows here come from a dated model list.

## What are the limits on free AI models?

Free variants are capped by requests per day and are often not meant for production. The blog post Free AI models you can call by API lists the caps with their sources.

## Why are there so few free models here?

The page reads the same snapshot as the model price page, which tracks a subset of the full list. The blog post linked on this page covers every free variant on the full list.

## Which paid AI model is cheapest?

It depends on your mix. Set the share of input tokens and the list ranks paid models by the cost of one million tokens at that mix.

## Where does the data come from?

From the OpenRouter model list, read through looot on the date shown under the list. Re-read it yourself with the command printed there.

## Do I need a key to call a free model?

Yes. Free variants still need an account with the provider that serves them. Through looot, your agent calls models with one looot connection.

## Is this list free to use?

Yes. It runs in your browser with no account and no limit.

## Related tools

- /free-tools/ai-model-comparison
- /free-tools/llm-token-cost-calculator
- /free-tools/token-counter

## Last reviewed

2026-10-14.