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Models.dev is a comprehensive open-source database of AI model specifications, pricing, and capabilities.

There's no single database with information about all the available AI models. We started Models.dev as a community-contributed project to address this. We also use it internally in opencode.

API

You can access this data through an API.

curl https://models.dev/api.json

Use the Model ID field to do a lookup on any model; it's the identifier used by AI SDK.

Contributing

The data is stored in the repo as TOML files; organized by provider and model. This is used to generate this page and power the API.

We need your help keeping the data up to date.

Adding a New Model

To add a new model, start by checking if the provider already exists in the providers/ directory. If not, then:

1. Create a Provider

If the AI provider doesn't already exist in the providers/ directory:

1. Create a new folder in providers/ with the provider's ID. For example, providers/newprovider/.

2. Add a provider.toml file with the provider information:

   name = "Provider Name"

2. Add a Model Definition

Create a new TOML file in the provider's models/ directory where the filename is the model ID:

name = "Model Display Name"
attachment = true  # or false - supports file attachments
reasoning = false  # or true - supports reasoning/chain-of-thought
temperature = true # or false - supports temperature parameter

[cost]
input = 3.00          # Cost per million input tokens (USD)
output = 15.00        # Cost per million output tokens (USD)
inputCached = 0.30    # Cost per million cached input tokens (USD)
outputCached = 0.30   # Cost per million cached output tokens (USD)

[limit]
context = 200_000     # Maximum context window (tokens)
output = 8_192        # Maximum output tokens

3. Submit a Pull Request

1. Fork this repo
2. Create a new branch with your changes
3. Add your provider and/or model files
4. Open a PR with a clear description

Validation

There's a GitHub Action that will automatically validate your submission against our schema to ensure:

• All required fields are present
• Data types are correct
• Values are within acceptable ranges
• TOML syntax is valid

Schema Reference

Models must conform to the following schema, as defined in app/schemas.ts.

Provider Schema:

• name: String - Display name of the provider

Model Schema:

• name: String - Display name of the model
• attachment: Boolean - Whether the model supports file attachments
• reasoning: Boolean - Whether the model supports reasoning capabilities
• temperature: Boolean - Whether the model supports temperature control
• cost.input: Number - Cost per million input tokens (USD)
• cost.output: Number - Cost per million output tokens (USD)
• cost.inputCached: Number - Cost per million cached input tokens (USD)
• cost.outputCached: Number - Cost per million cached output tokens (USD)
• limit.context: Number - Maximum context window in tokens
• limit.output: Number - Maximum output tokens

Examples

See existing providers in the providers/ directory for reference:

• providers/anthropic/ - Anthropic Claude models
• providers/openai/ - OpenAI GPT models
• providers/google/ - Google Gemini models

Working on frontend

Make sure you have Bun installed.

$ bun install
$ cd packages/web
$ bun run dev

And it'll open the frontend at http://localhost:3000

Questions?

Open an issue if you need help or have questions about contributing.

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Models.dev is created by the maintainers of SST.

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