Crow + the council ship code. Refactor, review, scaffold, port, verified by a kernel that runs your tests.
AI coding agent for developers and engineering teams. Theron-Crow plus the Theron council scaffold, refactor, port, and review code with a verifier kernel that runs your test suite on every diff. SWE-Bench-class reasoning. Free 3 months at launch.
Theron is the AI you talk to, built by Vext Labs. Every action it takes is sealed into a receipt you can verify yourself, offline, against our open-source verifier, with no Vext account.
Cursor and Copilot are autocomplete + single-model chat. Theron-Crow is a full coding council: it routes refactors to specialists, runs your tests in a verifier kernel before proposing a diff, and ships PRs with Stoa receipts showing what was changed and why.
Yes: every diff is verified by running your project's test suite in a sandboxed kernel before the change is proposed. The verifier kernel is part of the council, not an afterthought.
Theron-Crow was trained on Python, TypeScript/JavaScript, Go, Rust, Java, Ruby, C++, and Swift, plus framework-specific corpora (React, Next.js, FastAPI, Rails, etc.). The base model has broad polyglot coverage.