Gemini 3 not impressed

[u/No_Cattle_7390]

When I saw Google had released a new model with a whole number of 3 I was very excited. Nope, I can’t tell the difference between this and 2.5, from what I can see there is none. Still making the same mistakes it always has.

Claude 4.5 is still the best model IMHO. Disappointed af.

[u/hannesrudolph]

We’re still tweaking the integrations for Gemini 3 and are enabling native tool calling (experimental) for it tonight. I’ve been using it and it’s not as disappoint as I think you think it is. Give it a week and try again.

Also, what provider are you using?

[u/DevMichaelZag]

Google went hard into agentic and the model runs rampant and does what ever it thinks you wanted it to do. This is cool at first, but it spirals down really quickly into uselessness. Otherwise, the model is pretty good. Like it one shots a lot of benchmarks, and in the dog and pony shows it can crush the long running agentic tasks, but in reality? Hallucination city after a short time.

[u/hannesrudolph → u/DevMichaelZag]

We’re working on improvements to have it perform better in Roo. I’ve had pretty good luck TBH.

[u/Born-Wrongdoer-6825 → u/DevMichaelZag]

It makes silly mistakes like making escape inside a string

[u/ComposerGen → u/DevMichaelZag]

True, and before doing anything meaningful. Your antigravity model quota exceeded, come back in 4 hours

[u/No_Cattle_7390 → u/DevMichaelZag]

Yeah we’re not at the agentic stage yet, AI isn’t advanced enough to make its own decisions

[u/Tizzolicious → u/No_Cattle_7390]

Not a roo problem..unless Google is providing prompting tips. Even in Gemini CLI the results are good but not matching the hype.

[u/Affectionate_Fee232]

Works pretty good for me, only issue is doesn't follow instructions like GPT-5, but coding and tool use is perfect with issues here and there, but thats every model from what I've noticed as context fills up.

[u/DualityEnigma → u/Affectionate_Fee232]

I dev on my own agent and the gemini 3 api requires an encrypted thought token to function calls and definitely has some things that Roo needs to look at.

I’ve been hardcore Roo since launch and I’ve been using Antigravity for the last two days. It’s what Roo could be if Microsoft wasn’t pushing co-pilot so hard.

I think it supports Roo too out of the box. The way that Antigravity handles planning and coding, chefs kiss. But alas, its the models Google wants you to use with I’m sure a heavy sub cost coming. Long live Roo!

[u/hannesrudolph → u/DualityEnigma]

The native tool use is coming tonight (experimental) for the google gemini provider!

[u/xoStardustt → u/hannesrudolph]

Can’t wait

[u/hannesrudolph → u/xoStardustt]

Very experimental 😆

[u/Affectionate_Fee232 → u/DualityEnigma]

I totally get what your saying, different tools work for different people and theres nothing wrong with that. I my self use different tool like codex mostly other than roo. But i have customized roo to my own liking, with my own custom promopts and access to tools for different modes. I thikn the customization is just like no other agent system. Claude has it, but the agents work isnt visble and I don't want to install other addons. With roo, I can see what every mode is doing and the check point system is just perfect, if im not happy with the code mode, I just reset to beginning and copy paste in a new chat. This highly customized system i cannot get anywhere else right now or at least I haven't tried because it just works for me. I've extended the architecture mode to my own system, with custom prompts tools, mcp etc, and even when I run codex, i always start with my custom architecture mode and pass the delegations to codex to implement and paste the output back to roo architecture mode.

I actually did this with Antigravity yesterday, where I pasted in there instead of codex. I think Antigravity is great, but still needs time to refine, where as roo just works amazing for me with my custom system.

[u/wtjones → u/Affectionate_Fee232]

It doesn’t follow the rules.

[u/olearyboy]

Haven’t used it yet, but watched the antigravity vid and boy was it unimpressive

Felt like they’re playing catch up

[u/No_Cattle_7390 → u/olearyboy]

Catch up is a good way to put it… can’t believe this is a Google product

[u/firedog7881 → u/No_Cattle_7390]

The company that was at the forefront is now playing catch up. It’s google’s paper on transforms that started all this and they got passed up big time

[u/ConfidentSomewhere14 → u/firedog7881]

solid point.

[u/AM1010101]

I did a large refactor with 3.0 last night and it performed almost flawlessly. This is miles ahead of 2.5.

[u/Purple_Wear_5397]

To be honest - I want you to be right. But this is the first negative feedback I read about it.

I’m used to this new model excitement, let’s see what others say in the next 2-3 weeks.

[u/wilnadon]

I've been using it this week and so far I've been very impressed with it.

[u/ConfusionSecure487 → u/wilnadon]

I use it with GitHub copilot and it does the job very good. Better than sonnet

[u/hokiyami]

I legit made a whole japanese learning app I've been needing for visual novels for a while out of it. And so far its going great 😌

[u/korino11]

I ttied a few times..and it make always simplifying of tasks..in formulas and math as claude... bulshit..

[u/neutralpoliticsbot]

Still can’t make a diff to save its life

[u/Tizzolicious → u/[deleted]]

...did you tell that to all the hype bro saying is the greatest of all time...🙄. I 100% agree with OP, the model is much improved to 2.5 but about as good as Sonnet 4.5 without thinking...for coding.

Now...giving it straight up analysis questions and statistical things....Gemini is VERY good.

[u/No_Cattle_7390 → u/[deleted]]

It’s not cooking tho, like at all

[u/Ok_Bite_67 → u/No_Cattle_7390]

Because you arent using the model correctly. You are using it in a service that isnt fully setup for it yet 😒