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

A Japanese AI news account reports that Gemini 4's next version, Carbon, has been tested in internal coding tools for several days, that early Argon was rated close to Opus 5, and adds two more rumors including a Microsoft judgment-only AI.

A POV video expressing a user's impatience while waiting for Gemini 4 Argon to launch, with no substantive information.

A one-line Spanish quip about Gemini 4 Argon, which has not even been born yet.

A user complains that Google deprecated Gemini 3.7 Flash without any announcement, possibly to make way for the Gemini 4 series.

A user sums up a week of constant Gemini 4 Argon launch rumors that ended with no release, expecting it early next week at the soonest.

A prediction market puts Gemini 4 Argon's launch within four days at 51%, with the post claiming its latest endpoint matches Opus 5.5 and appears trained with RSI.

The post says prediction markets give Gemini 4 Argon a 90% chance of launching before the end of October, that Google engineers are testing an internal model called Carbon, and shows a 3D video made with GPT-6 Astra Ultra.

A post with an image claims Gemini 4 Argon is the first model to break an unspecified benchmark, without naming the test.

A user jokes that waiting for Gemini 4 Argon has become a daily Reddit meme, with an image captioned "day 10, still no Gemini 4."

In a video, Sundar Pichai said Gemini 4 Argon leads on the vals index and deepSWE and is being shared with cybersecurity defenders through the Fair Wind program.

A leak claims Gemini 4 Argon is only the public release name, while the next internal checkpoint, Carbon, is already in Google coding tools and reportedly near Claude Opus 5.5 and GPT-6 Astra, with no public ID or API.

Business Insider reports that Google employees have been testing a new Gemini 4 checkpoint codenamed Carbon on the internal Jetski coding platform, with one employee saying its coding feels comparable to Opus 5.5.