Million
Million builds open-source developer tools, datasets, and reinforcement learning environments for web and coding agents.
About Million
Million is a research lab focused on frontend coding data. It builds environments and evals where coding agents ship features, deploy applications, and debug issues in unfamiliar codebases, including React Bench for scoring frontend work in real codebases. It also open-sources developer tools such as React Doctor, which helps find issues in codebases, and React Scan.
Key features
- Agent environments to ship features, deploy apps, and debug issues
- Evals for frontier coding agents on everyday engineering work
- React Bench scores agents on frontend work in real codebases
- React Doctor helps find issues in codebases
- Provides React Scan as open-source developer tool
Best for: Developers working on frontend code and teams evaluating frontend coding agents benefit most.
Good for
- Builds both agent environments and developer tools
- Evaluates agents using real codebases
- Open-sources tools such as React Doctor and React Scan
Million at a glance
- Website
- million.dev
- Category
- Development › Developer Tools
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Good for
- Developers
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Million FAQ
What is React Bench?
It scores coding agents on frontend work in real codebases.
What do Million's agent environments cover?
Agents ship features, deploy applications, and debug issues in codebases they have not seen.
What developer tools does Million open-source?
React Doctor and React Scan; React Doctor helps find issues in codebases.
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