Gemini 3.5 Flash vs Claude Opus 4.7 vs GPT-5.5: Which Model for Which Agent Task (May 2026)

Google shipped Gemini 3.5 Flash at I/O 2026 on May 19. It outscores its own flagship Gemini 3.1 Pro on coding and agent benchmarks, runs 4x faster, and costs 40% less. But it does not win on every tas