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

A timeline roundup: GPT-6 Astra is in community hands, Opus 5.5 is live, Kimi K3.1 has been hinted, and Gemini 4 is expected before year-end, leaving open who ships first.

A video shows a 3D blender built with Gemini 4 Pro where you can add ingredients, adjust speed, pulse, and pour into a glass, with the focus on buttons and blending logic working together.

A Turkish post says Gemini 4 Pro is coming early next month and is extremely good, and the author says they will do a livestream review if it turns out true.

The author ran Gemini 4 Pro on arena.ai, called the result "holy result," and shared an image of the generated output.

A post claims the "Gemini 3.8 Flash" on Arena is actually Gemini 4 Pro in disguise, with outputs far stronger than Opus 5.5, though the author worries Google may never ship it, as with 3.5 Pro.

All three models were asked to render an Xbox 360 controller in pure SVG, and the poster says the gap between them is the new benchmark that actually matters.

A new checkpoint codenamed barium-b showed up on Arena, with a 3D F1 studio scene showing a clear jump in detail, materials and UI coherence.

Given the same "Papilio Mechanica" mechanical butterfly brief, Gemini 4 Pro went for luminous spectacle while Fable 5.1 Max went sculptural, which the author frames as a clash of design taste rather than scores.

The author collects 10 things people built with the rumored Gemini 4 Pro checkpoint in Arena and says that if the benchmarks hold, it would be Google's biggest comeback.

The post says DeepMind is already topping Arena with Gemini 4 Pro checkpoints and teases an "Ultra-supersized" release that will reset the entire LLM leaderboard.

An Arabic post says Google's unreleased Gemini 4 Pro beat GPT-6 Astra Max by a historic margin in a direct Arena matchup, with a video of the face-off.

The poster says DeepMind's "ultra-supersized later this year" line and weekly jumps in Arena Pro checkpoints point to a Gemini 4 Ultra release this year.