Tested it for roughly two hours now, far from ready for prime time, very buggy and clearly just quickly build on Windsurfs already rather issue laden code base. Essentially a less well thought out imitation of Trae's Solo mode, added in a second window on top of VSCode and not very well integrated, struggling with terminal commands and despite showing issues in the browser window and screenshot taken by the model, proclaiming the task to be completed. Tool calls also aren't as reliable as I would have expected considering their ownership of the code base, hard to tell whether that is underlying in the model (it was a major issue with 2.5 Pro) or simply Antigravity specific, hoping the latter.
Additionally, there are issues setting up accounts (Singapore VPN solved that for me), no support for Workspace users, only a free tier that requires data sharing, no additional rate limits for paying Pro or Ultra customers, etc. Even worse, Gemini CLI currently does NOT provide Gemini 3 Pro for Ultra Business customers despite paying over € 260,- per month, which is frankly ridiculous.
Will be honest, I was speculating that the reason for the multi month delay between the first A/B tests of Gemini 3 class models and the final release was so they'd have all their dugs in a row. Have some time to test everything, improve tooling, provide new paid subscriptions and/or ensure existing ones get access to everything day one, but they didn't.
Gemini 3 Pro seems very interesting (to early to say), but compared to every other recent launch by OpenAI (5, 5.1, Codex variants), Anthropic (Sonnet and Haiku 4.5), even Kimi (K2 Thinking) and Z.AI (GLM-4.6), this is by far the least organized launch of any frontier lab.
A buggy IDE which is unusable for paying customers, no CLI access for Ultra business (and none at all for Pro of any kind), etc. is frankly embarrassing when considering what competitors manage to provide the day a model launches.
What have they been working on these last two months besides going on X and posting "3" every couple of days? Why is there no paid Antigravity tier, no way to use Workspace accounts, etc? Before launching in this state, I feel it'd have been better to delay a bit more if it was absolutely needed.
Also, correct me if I'm wrong but isn't this the fourth or fifth IDE built by Google for LLM assisted coding? What happened to IDX and Firebase Studio and aren't they also based on VSCode?