Disco. Grounded answers, cited reports, and working apps. Disco is open source: a research and build platform you host yourself, on the models you choose. Ask a question, and you get one grounded answer, with every claim tied to a source you can open. When the evidence is weak, Disco says so. Ask for a report, and Disco plans the research, reads until the gaps close, and checks every claim against its source before you see it. Describe an app, and Disco builds it, runs it, and checks its own work. A design lint knows what machine-made pages look like, and sends the agent back until they don't. Point the same agent at any task on your files and tools. You approve what it may do. Measured, not claimed. Disco is benchmarked against the leading research tools and coding agents. Every result is published, including the losses. Nearly four thousand recorded runs before Disco asked for anyone's trust. Built to run well on open-weight models on your own hardware, and with frontier APIs when you want them. Apache 2.0, forever. Disco. Self-hosted in minutes.