Gemini 4 Pro / Flash: benchmarks, hands-on tests and leaks

A model listed on Arena as gemini-3.7-flash produced highly polished scenes and UI, and the entry was later removed, with the output said to be a Gemini 4 Pro test.

Google product lead Tulsee Doshi says her team is excited about the unreleased Gemini 4 and building internal hype while balancing the chaos and possible burnout of moving fast.

A user asked Gemini 4 Pro to build a mechanical butterfly in three.js, and the reposted result is called surprising again, though the post gives no code or render details.

A video shows Gemini 4 Pro's three.js generation, which the author rates on par with Fable 5.2 and says makes them more eager for Gemini 4.

A short post argues that Gemini 4 Pro may reverse its earlier reception, without citing any tests or data.

Given the same Arena prompt for two mechanical butterflies, Gemini 4 Pro finished in about 10 minutes and Fable 5.1 Max in about 30, with the author comparing glowing wings and clockwork detail.

Asked to build a Waymo Jaguar i-Pace in three.js with no reference, GPT-6 Astra and Fable 5.1 both got the car and roof lidar wrong, and Gemini 4 returned nothing in Arena that day.

An investor says Gemini 4 Pro's early tests look strong, and that matching Fable at low cost before Anthropic's IPO would put Google back on top in AI on compute and cash flow.

The poster says the Flash models were good but never generated the excitement of Gemini 4.0 Pro, and expects upcoming Gemini releases to bring serious competition.

Given the same prompt to build a Three.js 3D dragon on a white background, Gemini 4 Pro matched a fully powered Opus 5, though Opus 5 stayed ahead on structural detail.

A three.js mechanical butterfly prompt produced a beautiful result from Gemini 4 Pro, which was previously tested on Arena under the placeholder name gemini-3.7-flash and appears to have been removed since.

A user says the model listed on Arena as gemini-3.7-flash, likely Gemini 4 Pro or Flash, produced a Three.js video of a wooden fire-lookout tower miniature at AAA-game photorealism.