Developer finds Gemini models in Antigravity ignore instructions, read outdated docs

A developer who regularly uses Antigravity (also called Agy), an AI coding tool powered by Google's Gemini models, reports that the models increasingly fail to follow user instructions and ignore configuration files like AGENTS.md. The models also tend to reference outdated documentation even when newer guidance is explicitly provided in project folders. The developer suspects the root cause lies in Antigravity's system prompt or the context Google injects into the models, which may overload or confuse them. Testing the same Gemini models through a separate harness called Limitcode yielded noticeably better instruction-following behavior, suggesting the issue is tool-specific rather than purely a model limitation. The developer describes Antigravity as a useful fallback option but not a primary choice, and plans to investigate further before drawing broader conclusions.