I've Kiro and Antigravity installed both are vs code but forked by Amazon and Google and brought their multi agentic coding environments. Then I installed Claude extention on both. I follow spec-driven approach (https://kiro.dev/docs/specs/) all agents are instructed to follow it strictly. When I plan sometimes I evalute all specs with Kiro, Gemini and Cluade. Each has their share of work and improvements, each spec in my case end up as requirments, design and tasks.md files. Most of the code is generated by Claude and Gemini Argon and its pretty solid.