Cosine

Cosine is a sophisticated AI development platform designed to deeply understand and operate on your codebase. Using a combination of static analysis, semantic search, and multi-agent reasoning, it answers natural language questions, suggests code, and modifies code autonomously. It integrates with GitHub, VS Code, Jira/Linear, and Slack to provide streamlined workflows and real-time collaboration . At its core is Genie, a groundbreaking autonomous AI software engineer that can plan, implement, test, and commit pull requests for bug fixes and new features—per your instructions. It leverages a flat-rate, task-based pricing model, aligning cost strictly with delivered outcomes, encouraging adoption for complex or large-scale development work .