More agents ≠ engineering transformation. Meet Cosmos, the OS for agentic software development.
Joined November 2023
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Your PR sat for three days. CI was red, comments piled up — and your reviewer didn't have the confidence to hit approve.
A fleet of agents performs multiple rounds of review, fixes the CI, the comments, the conflicts, then hands your reviewer a deep review briefing and end-to-end evidence.
Humans still approve and merge 👇
Quick start: a software factory in Cosmos is two screens and one prompt.
1. Connect your repo
2. Create an environment
3. Describe the factory you want
Advisor picks the experts, writes the configs, applies them, and asks you when it needs a decision.
The best part of an agent that runs in the cloud isn't the speed. It's that you can walk away.
Cosmos notifies you the moment it needs you. Everything else, it handles.
Watch a PM and an engineer collaborate on a PRD — with their agents, without leaving Cosmos.
A PM drafts it with her agent. An engineer opens the same file, has his own agent review it, leaves a comment. Her agent answers it and updates the doc.
One filesystem. Both people. Both agents.
GPT-6 Astra is live in Cosmos!
OpenAI's most capable model yet brings a significant jump on long-horizon coding and multi-step agentic work.
Give it your hardest task to work on over the holiday weekend at augmentcode.com!
Most agent platforms make you learn the platform.
Cosmos Advisor just answers. Build this. Fix that. What did it cost.
One prompt box, your entire software factory. Try it today ↓
Claude Fable 5.1 is now available in our model picker! We're starting off with the same use cases as Fable 5 - extremely long, multi-step tasks that require deep reasoning - and we're increasingly pushing the model to complete tasks that can run unattended.
Try it today in Cosmos: augmentcode.com
Opus 5 is live in Augment Code. In our internal evals it scored higher than Opus 4.8 on correctness, completeness, and code reuse.
We trust it enough that we're upgrading one of our Cosmos code review experts that reviews all our code to Opus 5: near-Fable review quality at a lower price.
Try it in Cosmos today!
What does the role of an engineer look like today?
In the latest episode of We Built What? we take a deep dive on the skills required.
Full episode in the thread 🎧
How do you keep up with AI? @gregorojstersek has advice for any engineering leader:
A few we shipped to production like this, all on systems with thousands of active users, none of which caused an incident.
Most teams point agents at small, well-scoped work. A ticket goes in, a tidy PR comes out, a human reviews it, it merges.
Our largest projects don't work that way.
On Cosmos, once a human has reviewed and approved the design doc, we hand the entire design to a single worker agent and let it build the whole thing as one PR. It implements the design, fixes its own CI failures, and works through review comments until the change is ready to merge. No ticket-splitting, no relay between agents.
The PRs are large, often thousands of lines, and we prefer them that way. One agent holding the full approved design writes a more coherent change than several agents each working from a slice of the context. The seams you get from splitting, the mismatched assumptions between unit three and unit seven, don't show up when one agent carries the whole picture.
