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

TestingCatalog says Gemini 4 Argon has shown up on the GCP quotas page, a precursor to an API release, after Google employees teased an upcoming launch.

Google is reportedly testing a Gemini 4 model codenamed Carbon on its internal coding platform Jetski, with employees comparing it to Opus 5.5 for coding; Argon and Barium versions were also tested.

The poster says they are going to sleep and hopes to wake up to Gemini 4 Argon released, so their timeline stops filling with launch date predictions.

Mr_Salio rounds up Gemini 4 Argon launch signals: model IDs are in the app, Google's SKU pricing page lists $2/$10 discounted and $4/$20 normal rates, and Ultra users may get access first.

A creator says they are preparing dedicated content for the Gemini 4 Argon launch, expected today, as something to give back to subscribers.

A leak says the Argon Contributor tier is priced at $2 per million input tokens and $10 per million output tokens, with model IDs already in the Antigravity client.

A post claims Gemini 4 Argon outperformed Claude Opus 5.5 and GPT-6 Astra in the latest benchmark, with an image but no named test.

Prediction market traders give Gemini 4 an 89% chance of launching today, after a Gemini 4 Argon page appeared on the DeepMind site in September.

TestingCatalog says Google is rolling out custom MCP support in the Gemini desktop app to more users and speculates Computer Use and Superprojects may arrive with Gemini 4.

A post says Gemini 4 Argon costs $1.99 per test task versus $5.98 for Opus 5.5, arguing Argon has the cost advantage.

The Mac Antigravity client code already lists Argon model names and IDs for Low, Medium and High tiers, suggesting Gemini 4 Pro is about to arrive in the IDE.

A user complains that if Gemini 4 Argon launches today but is limited to $100/month Ultra subscribers, they are done with Google.