Cosine vs Sweep
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Cosine if you want agentic ai software engineer producing reviewable, controlled code (Supervised agent, subscription); choose Sweep if you want fast ai coding assistant for jetbrains ides with an embedded agent (Copilot, freemium).
| Cosine | Sweep | |
|---|---|---|
| What it is | Agentic AI software engineer producing reviewable, controlled code | Fast AI coding assistant for JetBrains IDEs with an embedded agent |
| Type | agent | product-with-agents |
| Autonomy | Supervised agent | Copilot |
| Pricing | subscription · $19/mo (Starter) | freemium · $10/mo (Basic) |
| Best for | developers, enterprise | developers |
| Deployment | saas, self-hosted | saas |
| Modalities | text, code | text, code |
| Models | proprietary | proprietary, claude |
| Protocols | rest-api | mcp, function-calling |
| Integrations | GitHub, Jira, Linear, Slack, VS Code | JetBrains IDEs, Git, VS Code, Zed |
| Capabilities | 4 documented | 4 documented |
Cosine
- +Built for review and control: a diff-plus-evidence handoff fits real merge workflows
- +Proprietary, purpose-trained model rather than a thin wrapper
- +Multi-surface (CLI, desktop, cloud) with async parallel execution
- -"Fully agentic" branding oversells reality; output needs human review and merge
- -Headline SWE-bench scores are company-reported and never appeared on the official leaderboard
Sweep
- +Purpose-built for JetBrains, a major IDE family underserved by AI-first editors, leveraging native static analysis
- +Custom sub-100ms autocomplete plus a full agent in one plugin
- +Privacy-friendly: SOC 2 and zero-data-retention claims, bring-your-own-key, and a self-hostable path
- -Narrow surface: JetBrains-first, with VS Code and Zed support still early
- -Young, small team with a recent pivot and short track record
Which should you choose?
Cosine is agentic ai software engineer producing reviewable, controlled code, best for developers, enterprise. Sweep is fast ai coding assistant for jetbrains ides with an embedded agent, best for developers. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.