First thoughts:
It’s smarter than Opus 4.6 at coding/research, but the rollout is a mess and your quota is in danger.
Also,
Don’t wait for the auto-update.
Most of us are finding that you have to download the latest installer and manually reinstall to get the 3.1 Pro options to actually show up in the sidebar.
Why do I say the roll out was a mess?
There were reports that Gemini 3.1 Pro was seen in Windsurf IDE before even rolling out xD
The “Opus Killer” in Scientific Reasoning
While everyone is obsessed with coding benchmarks, the early reports on Scientific Research Analysis are wild.
One developer pointed out that Gemini 3.1 Pro (High) is identifying logic gaps and inaccuracies in research that Opus 4.6 completely missed.
We’ve been treating Opus as the Senior Architect, but 3.1 Pro is proving it might be the better Academic.
It’s finding spot-on errors in computer vision and cybersecurity research that every other model from GPT-5.2 to Opus 4.6, said was “perfect”.
But you know it’s Antigravity, so there’ll be a trap :)
and it is:
The Quota Trap: Almost 7 to 10% Per Prompt
Here is the catch that’s going to hurt.
Even with a Pro account, Gemini 3.1 Pro is a resource hog.
- The Cost: One prompt is reportedly eating 7 to 10% of a Pro account’s quota.
- The Reality: I’ve seen users on Reddit finally get the model to appear, only to realize they were already out of quota before they could send a couple of messages.
This is kinda weird, considering it was supposed to be same as Gemini 3.0 limits.
So?
You don’t use it for boilerplates,
you use it for the almost “impossible” logic errors.
Now, we are currently in a three-way war for the terminal.
- GPT-5.3-Codex: Still the king of the CLI with 77.3% on Terminal-Bench 2.0.
- Gemini 3.1 Pro: Neck-and-neck with the big players, hitting 80.6% on SWE-Bench Verified and a massive 77.1% on ARC-AGI-2 reasoning.
- Opus 4.6: A solid performer at 65.4% on Terminal-Bench.
Choose Momentum over Hype.
- If you get the 3.1 Pro update to stick, use it for the deep architectural gaps that Claude is too polite to find.
- Keep an eye on that new Quota Dashboard, the most dangerous thing in your IDE isn’t a bug, it’s a 10% depletion rate on a model you just unlocked.
Also, stop waiting for the Thinking bubble to finish.
Reinstall Antigravity, claim your Jio leverage, and see if 3.1 Pro can find the bugs your Senior Engineer missed ;)
In case we are meeting for the first time, come over here, it’ll be worth the roller coaster of articles that are gonna come up in the next few weeks.