Parallel AI agents for long-horizon, complex software tasks
Cosine is an AI software engineer that operates across the CLI, cloud, and desktop, designed to complete tasks end-to-end without human supervision. It understands your codebase, plans, writes changes, and opens PRs. Working asynchronously, devs can assign multiple tickets all at once to Cosine, then come back to review and merge PRs. Tackle messy backlogs, fix bugs, and prototype faster without changing workflow.
Cosine's Lumen models are trained on production code to minimize duplication, dead code, and unnecessary complexity. The agent autonomously plans, writes, tests, and commits code with minimal diffs that match codebase style, enabling engineers to hand off complex migrations and refactoring without sacrificing visibility or code quality.
Cosine's Lumen models achieve the lowest cost per successful task ($7.90) compared to GPT-5.5 ($28.41), Gemini 3.1 Pro ($17.79), and other mainstream models, while maintaining higher code quality through behavioral RL on scope discipline and evidence-based planning.
Cosine Cloud provides a shared workspace where engineers, PMs, and stakeholders can plan, review, and ship code together. The platform supports parallel task execution, long-running background tasks, and agent commits that keep changes reviewable and reversible, enabling asynchronous collaboration.
Cosine is post-trained for enterprise and niche languages including C, R, Matlab, Fortran, Verilog, and Rust through an 8-step data pipeline using real production code. This enables teams using legacy or specialized languages to leverage AI-assisted development without resorting to generic models.
Cosine offers three deployment options: public cloud, dedicated single-tenant VPC, and fully air-gapped on-premises. Air-gapped deployments run entirely within the organization's security perimeter with no external dependencies or data egress, supporting strict compliance and classified-network requirements.