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

Google says over 100K users across Alphabet already use Gemini 4 Argon monthly, and it is now available in the paid Gemini API, Antigravity for Ultra, and the Gemini app for Pro and Ultra.

A post with an image claims OpenAI's internal benchmarks show GPT-6.1 Sol crushing Opus 5.5 while Gemini 4 Argon struggles to keep up.

Two new papers report that GPT-6 Astra Pro helped a physicist find exact analytical solutions to plasma equilibrium equations, and Gemini 4 Argon agents extended them to configurations breaking an additional symmetry.

A user says the $20 tier hits Astra's 5-hour cooldown instantly, so they canceled and now use Opus 5.5 for heavy work and Gemini 4 Argon for writing and daily tasks.

A commentary says Google is claiming frontier-level performance with Gemini 4 Argon, leveraging compute and billion-user distribution against OpenAI and Anthropic.

The author gave Argon and GPT-6 Astra the same prompt to build an interactive 3D flyover of Mt. Rainier, and Argon mapped all the climbing routes with clickable 3D views.

A user says Google does not currently give Pro subscribers access to Argon 4 in Antigravity.

Someone showed a Three.js 3D scene made with Blender, Opus and GPT-6 Astra, and claimed Gemini Argon or Muse cannot achieve the same result.

In the same hidden-pattern test, Opus 5.5 found the hidden word this time, while Gemini 4 Argon confidently answered "TRICKED" and missed the visual pattern.

The user says current results show the model has a good foundation, is waiting for the next few Argon checkpoints, and praises Google's post-training work.

Gemini 4 Argon is now open to paying developers via the Gemini API, Google Cloud and AI Studio at $2 per million input tokens and $10 per million output, with the price doubling after November 30.

A Spanish-language blogger says Gemini 4 Argon is now available on HIX AI with free, unlimited access according to the company's announcement, making it easy to compare against other models in one place.