Google’s November 10 Antigravity post pairs Gemini 4 Carbon with /swarm, a preview command that coordinates multiple agents for longer-running engineering and knowledge-work tasks. Google positions Carbon for demanding multi-step work, while also saying its smaller Argon model remains a better fit for many routine tasks. Availability depends on the product and plan: the model is offered through paid developer/API channels, and /swarm has its own Antigravity plan requirements.

A team of agents can split investigation, implementation, and review, but parallel execution introduces coordination costs. Agents may edit overlapping files, make incompatible assumptions, or repeat work. The useful question is whether explicit task boundaries and a verifier improve end-to-end completion, including review time, cost, and defects—not whether the system can show several agents working at once.

For a web application, delegate bounded tasks such as test discovery, a component change, and a separate accessibility review. Agree on shared interfaces and file ownership first. Then run the full build and browser checks yourself, inspect the combined diff, and confirm the rendered behavior. Treat Google’s model capability claims as vendor-reported until tested on your repository.