Parallel AI agents for long-horizon, complex software tasks
Cosine Swarm is AI software engineering at scale, built for long-horizon work and engineers with taste. By transforming objectives into an organized team of specialized agents – Orchestrators, Task Owners, and Workers – it handles complex refactors and system-wide migrations without losing focus. Cosine operates as one runtime across CLI, Desktop, and Cloud. Use Swarm mode for parallel execution for research, implementation, and QA. Return to isolated, human-reviewable PRs.
I’m Yang, co-founder of Cosine (cosine.sh), along with @alistair_pullen. We’re excited to introduce Cosine Swarm!
For the past year, we’ve seen AI coding move from simple autocomplete to bounded task agents. At Cosine, we believe that the system surrounding the model intelligence has become increasingly important.
💡What is Cosine?
Cosine is an AI software engineering agent that works across every surface developers use. Instead of stitching together separate AI tools for the terminal, editor, desktop, and remote execution, Cosine gives you one shared runtime across all of them.
You can start in the CLI, coordinate through the desktop app, and scale tasks in the cloud without changing products or workflows.
👾 Unleash the Swarm
Cosine Swarm lets a single prompt launch parallel subagents for research, exploration, implementation, QA, and coordination. Each subagent works in its own isolated context, with its own tools and trajectory, so complex work can branch safely, stay reviewable, and move faster without turning into chaos.
Instead of a single-agent thread straining under the weight of multiple tasks, Swarm mode creates a coordinated hierarchy. An Orchestrator breaks down goals, Task Owners manage workstreams, and Workers execute tactical changes in parallel.
Assign complex tasks in the evening and find them completed, tested, and ready for review by the morning.
🖥️ Available now across our entire ecosystem
I’m incredibly proud of our team for this release. We built Cosine to feel less like a collection of disconnected agent experiences and more like a real system for AI-native software engineering.
Swarm mode is available now across CLI, Desktop, and the Cloud.
We’re looking for feedback from developers and teams working across large codebases, multiple tools, and complex workflows – especially anyone who wants more control, better collaboration, and a coding agent that scales beyond a single interface.
🎁 Grab 1 month of FREE access to our Hobby tier using the code above. 20M tokens to swarm with.
I'll be in the thread all day answering questions!
About Cosine Swarm on Product Hunt
“Parallel AI agents for long-horizon, complex software tasks”
Cosine Swarm launched on Product Hunt on April 21st, 2026 and earned 97 upvotes and 11 comments, placing #9 on the daily leaderboard. Cosine Swarm is AI software engineering at scale, built for long-horizon work and engineers with taste. By transforming objectives into an organized team of specialized agents – Orchestrators, Task Owners, and Workers – it handles complex refactors and system-wide migrations without losing focus. Cosine operates as one runtime across CLI, Desktop, and Cloud. Use Swarm mode for parallel execution for research, implementation, and QA. Return to isolated, human-reviewable PRs.
On the analytics side, Cosine Swarm competes within Developer Tools, Artificial Intelligence and Vibe coding — topics that collectively have 978k followers on Product Hunt. The dashboard above tracks how Cosine Swarm performed against the three products that launched closest to it on the same day.
Who hunted Cosine Swarm?
Cosine Swarm was hunted by Yang Li. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Yang Li
Hey Product Hunt! 👋
I’m Yang, co-founder of Cosine (cosine.sh), along with @alistair_pullen. We’re excited to introduce Cosine Swarm!
For the past year, we’ve seen AI coding move from simple autocomplete to bounded task agents. At Cosine, we believe that the system surrounding the model intelligence has become increasingly important.
💡What is Cosine?
Cosine is an AI software engineering agent that works across every surface developers use. Instead of stitching together separate AI tools for the terminal, editor, desktop, and remote execution, Cosine gives you one shared runtime across all of them.
You can start in the CLI, coordinate through the desktop app, and scale tasks in the cloud without changing products or workflows.
👾 Unleash the Swarm
Cosine Swarm lets a single prompt launch parallel subagents for research, exploration, implementation, QA, and coordination. Each subagent works in its own isolated context, with its own tools and trajectory, so complex work can branch safely, stay reviewable, and move faster without turning into chaos.
Instead of a single-agent thread straining under the weight of multiple tasks, Swarm mode creates a coordinated hierarchy. An Orchestrator breaks down goals, Task Owners manage workstreams, and Workers execute tactical changes in parallel.
Assign complex tasks in the evening and find them completed, tested, and ready for review by the morning.
🖥️ Available now across our entire ecosystem
I’m incredibly proud of our team for this release. We built Cosine to feel less like a collection of disconnected agent experiences and more like a real system for AI-native software engineering.
Swarm mode is available now across CLI, Desktop, and the Cloud.
We’re looking for feedback from developers and teams working across large codebases, multiple tools, and complex workflows – especially anyone who wants more control, better collaboration, and a coding agent that scales beyond a single interface.
🎁 Grab 1 month of FREE access to our Hobby tier using the code above. 20M tokens to swarm with.
→ Get started with Cosine: cosine.sh
→ Read the docs: cosine.sh/docs
I'll be in the thread all day answering questions!