Gemini 3 Flash: Frontier intelligence built for speed

They went too far, now the Flash model is competing with their Pro version. Better SWE-bench, better ARC-AGI 2 than 3.0 Pro. I imagine they are going to improve 3.0 Pro before it's no more in Preview.

Also I don't see it written in the blog post but Flash supports more granular settings for reasoning: minimal, low, medium, high (like openai models), while pro is only low and high.

Re: Gemini 3 Flash: Frontier intelligence built for speed

#4

Post by samyok » Wed, Dec 17, 2025, 4:46 PM UTC

Don’t let the “flash” name fool you, this is an amazing model.

I have been playing with it for the past few weeks, it’s genuinely my new favorite; it’s so fast and it has such a vast world knowledge that it’s more performant than Claude Opus 4.5 or GPT 5.2 extra high, for a fraction (basically order of magnitude less!!) of the inference time and price

Re: Gemini 3 Flash: Frontier intelligence built for speed

#5

Post by tanh » Wed, Dec 17, 2025, 4:47 PM UTC

Does this imply we don't need as much compute for models/agents? How can any other AI model compete against that?

Re: Gemini 3 Flash: Frontier intelligence built for speed

#6

Post by doomerhunter » Wed, Dec 17, 2025, 4:47 PM UTC

Pretty stoked for this model. Building a lot with "mixture of agents" / mix of models and Gemini's smaller models do feel really versatile in my opinion.

Hoping that the local ones keep progressively up (gemma-line)

Re: Gemini 3 Flash: Frontier intelligence built for speed

#7

Post by fariszr » Wed, Dec 17, 2025, 4:47 PM UTC

These flash models keep getting more expensive with every release.

Is there an OSS model that's better than 2.0 flash with similar pricing, speed and a 1m context window?

Edit: this is not the typical flash model, it's actually an insane value if the benchmarks match real world usage.

> Gemini 3 Flash achieves a score of 78%, outperforming not only the 2.5 series, but also Gemini 3 Pro. It strikes an ideal balance for agentic coding, production-ready systems and responsive interactive applications.

The replacement for old flash models will be probably the 3.0 flash lite then.

Re: Gemini 3 Flash: Frontier intelligence built for speed

#8

Post by user_7832 » Wed, Dec 17, 2025, 4:50 PM UTC

Two quick questions to Gemini/AI Studio users:

1, has anyone actually found 3 Pro better than 2.5 (on non code tasks)? I struggle to find a difference beyond the quicker reasoning time and fewer tokens.

2, has anyone found any non-thinking models better than 2.5 or 3 Pro? So far I find the thinking ones significantly ahead of non thinking models (of any company for that matter.)

Re: Gemini 3 Flash: Frontier intelligence built for speed

#9

Post by jug » Wed, Dec 17, 2025, 4:50 PM UTC

Looks like a good workhorse model, like I felt 2.5 Flash also was at its time of launch. I hope I can build confidence with it because it'll be good to offload Pro costs/limits as well of course always nice with speed for more basic coding or queries. I'm impressed and curious about the recent extreme gains on ARC-AGI-2 from 3 Pro, GPT-5.1 and now even 3 Flash.

Re: Gemini 3 Flash: Frontier intelligence built for speed

#10

Post by simonsarris » Wed, Dec 17, 2025, 4:50 PM UTC

Even before this release the tools (for me: Claude Code and Gemini for other stuff) reached a "good enough" plateau that means any other company is going to have a hard time making me (I think soon most users) want to switch. Unless a new release from a different company has a real paradigm shift, they're simply sufficient. This was not true in 2023/2024 IMO.

With this release the "good enough" and "cheap enough" intersect so hard that I wonder if this is an existential threat to those other companies.