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

The author says Gemini 4 Pro generated a rotatable, disassemblable 3D turbofan engine, and Astra turned a workshop sketch into a 3D steel-structure workflow demo he plans to sell to factories as an interactive presales tool.

A roundup of seven possible model releases this week: Gemini 4 Pro is reported to be testing on Arena under codenames like Argon, while Google only confirms Gemini 4 is in training.

A video says Gemini 4.0 has entered beta, that Google diverted resources toward the Nano Banana image model, and that the sudden "3.8 Flash" on Arena is unusually strong at coding and long context.

A reply says the user is excited for Gemini 4 Pro because of the hype, with no specific details or testing.

A point-by-point take on rumors: Sol is 6-7x faster than Astra, Bel beats Astra Max at low reasoning, and Gemini 4 Pro returns to first place in webdev and 3D.

A roundup of rumors about frontier models that could launch this week, including Gemini 4 leaks and a September 29 DevDay.

The author shows a clean Gemini 3.1 Pro generation and says that if the leaked Gemini 4 Pro specs hold, the jump could exceed expectations.

A roundup of frontier models that could launch this week, with the poster wondering how they will compare and which one ships first.

Relaying Logan Kilpatrick's view that Gemini 4.0 gray testing has started, that resources went to the Nano Banana image model first, and that the suddenly stronger "3.8 Flash" on Arena is likely 4 Pro.

A user posts a video saying they hope Gemini 4 Pro beats Sonnet 3.5, an expectation with no test results behind it.

A rundown of launch rumors: OpenAI DevDay on Sept 29 is the only confirmed date, Opus 5.5 has leaked pricing, Grok 4.7 keeps slipping, and Gemini 4 is in pre-training.

The poster lists models that might launch this week, including Claude Opus 5.5, Gemini 4 Pro, GPT-6 Sol and Grok 4.7/4.8, and asks what people expect.