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

A user jokes that Gemini 4 Argon's moment in the spotlight will last only a few hours or days before Fable 5.5 makes everyone forget it.

The same prompt asked Gemini 4 Argon and Gemini 3.8 Flash to each build a static Plants vs. Zombies page, with the two results compared side by side for frontend fidelity.

A user confirms Gemini 4 Argon can be trialed by Pro subscribers in the Gemini app but is not yet visible in Antigravity.

A user says shared results show Gemini 4 Argon is as good as or better than Opus 5.5 at 3D and frontend design, with the main complaint being that Pro users still can't access it in Antigravity.

Artificial Analysis says Argon ties GPT-6 Astra on its Intelligence Index at about 60% of the cost per task, with 50% off until November 30 and clear gains in agentic performance and hallucination rate.

A user asked Gemini 4 Argon for a castle and it finished in under four minutes, which the author calls crazy fast, with a video attached.

Paying Pro users say they cannot access Gemini 4 Argon in Antigravity and ask Google to limit their usage rather than block access entirely.

A user's test of the AI Ultra 20X family plan estimates Gemini 4 Argon's equivalent API quota at $70 per 5 hours and $220 per week, noting the quota may shrink once the current 50% discount period ends.

A video post shows a finished physical phone said to have been built with Gemini 4 Argon, with a link to the original post.

A short post with an image claims that Gemini 4 Argon is fully aligned.

Aggregator platform Minirouter says Gemini 4 Argon is now available, calling it as smart as GPT-6 Astra and Fable 5.1 and suited to long-horizon tasks, with 50% off until Dec 1.

A long post rounds up Argon as the largest Gemini 4 flagship, covering its video generation, half-price launch pricing that doubles on Dec 1, context caching discounts, code review and background agent work, and Ultra-only access to Antigravity and AI Studio.