AI made developers 19% slower at their real work.

Last August, METR put experienced engineers on real tasks with AI. They took 19% longer, while believing the whole time they were moving faster. The same people flew on their own side projects. The model had not changed. The setting around it had.

Generating code got cheap. Trusting it got expensive.

Once anyone can generate code on demand, the volume explodes, and so does the share that is plausible but quietly wrong: slop that reads fine, often reviews clean, then breaks in ways nobody caught. Reviews pile up, pull requests double, and making sense of it becomes the job.

Same engines. Different outcome.

One workspace for agent-native teams.

Code, a running copy of the app, review, planning, and the agents doing the work, all in one place. People and agents work in the same project at once.

Reliability is built in, in three layers.

No layer is ever trusted to check its own work.

We build Covibes with Covibes.

Since December, with no plan to hire engineers to sustain it. Our open-source Zeroshot sits at 1,444 stars, used by engineers at Microsoft, AWS, Google, Apple, Cloudflare, Shopify, Atlassian, and Adobe.

Your stack. Your bill. Your pace.