Mixed
Gemini 3.1 Pro's long context is genuinely better now — I fed it a 200k token codebase and it could reference files from the beginning without losing track
MATTEHWHOU on Hacker News
200k token codebase
In the thread “Gemini 3.1 Pro”
Helped: Long context allowed referencing early files without losing track.
Got in the way: Takes shortcuts when tasks have more than five constraints.
I've been A/B testing the big three (GPT-5, Claude Opus 4, Gemini 3.1) on a real codebase migration this week. Quick take: Gemini 3.1 Pro's long context is genuinely better now — I fed it a 200k token codebase and it could reference files from the beginning without losing track. That was a real problem in 3.0. …