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

A rumor claims Gemini 4 Argon is now being used in quantum computing and fusion research, but the post gives no source or details.

A user complains that Google surfaces keep promoting Gemini 4, but upgrading in Workspace and the Chrome extension only offers Gemini 3, leaving Argon effectively unavailable.

The poster says they expected some criticism but thinks Argon still performs excellently, calling the negative voices a minority.

A user posted a screenshot complaining that two prompts on Gemini 4 Argon consumed 12% of the weekly usage limit.

Across 20 runs each on a production monorepo, Argon passed all tests 16 times versus 13 for Opus 5.5, but its output tokens were about 2.8x Opus's, making the total $57.68 versus $45.81.

The author says TasteSkill v2 works better for frontend work with Gemini 4 Argon and shows one-shot results from short prompts that are not cherry-picked.

Google Antigravity will remove all third-party models on Nov 2 unless users are on a paid Pro or Ultra plan; on a free promo AI Ultra account Gemini 4 Argon is unlocked while Claude 5.5 is blocked.

A Japanese user generated illustrations with Gemini 4 (Argon) on a phone, saying results beat 3.1 Pro but come with a 5-hour usage limit.

Citing Artificial Analysis data, Argon reportedly uses 62k output tokens per task and 110M tokens for the full test, costing $1.99 per task now and $3.98 after the intro price ends Nov 30.

A complaint post says the promotion that handed out 6b free Gemini tokens has ended and that the user spent the quota on Argon.

Google's official account linked to details on Gemini 4 Argon and described using Nano Banana, Veo, and Argon to turn an academic PDF into an animated storybook in the Gemini app.

The creator says Argon stood out for visual detail, transitions, facial expressions and cross-shot character consistency, the highlight of their first animation project.