Ellipsis started as an AI code review agent that caught logical bugs, style violations and security issues on pull requests — and could respond to review comments by pushing fixes. It has since expanded into a platform for deploying AI software engineers: teams define agents in YAML, deploy them via git push into isolated cloud sandboxes, and get shared traces, budgets and permissions across the organization.
Agent infrastructure with observability built in
The platform supports Claude, Codex and Gemini as underlying models, integrates with GitHub, Slack, Linear and MCP servers, and gives engineering leaders a dashboard of agent activity, costs and detailed execution traces. Ellipsis reports 400+ teams using it across 67,000+ repositories with almost 17M agent runs, and is SOC 2 certified.
Company background
Ellipsis was founded by Hunter Brooks and Nick Bradford and went through Y Combinator's W24 batch, raising a $2M seed round from investors including Twenty Two Ventures, Garage Capital, Amino Capital and Pioneer Fund. Its code review product is priced accessibly per seat, which made it a popular CodeRabbit alternative before the platform expansion.