Is Google pivoting from Gemini 3.5 Pro to Gemini 4?

As of August 2026, reports say Google DeepMind is training Gemini 4 in parallel after Gemini 3.5 Pro repeatedly missed benchmarks and stayed stuck in partner testing past its June/July 2026 targets. Gemini 4 is described as being trained alongside, not necessarily as a formal replacement. No Gemini 4 release date, price, or benchmarks have been published.

Why was Gemini 3.5 Pro delayed?

Gemini 3.5 Pro missed its mid-2026 targets, reportedly because it struggled with reliability and real-world benchmarks. Google reportedly scrapped an earlier Pro build and restarted portions of pretraining. It remained in partner testing as of August 2026, and Gemini 3.6 Flash didn't fully close the gap.

What should I use instead of Gemini 3.5 Pro right now?

Gemini 3.6 Flash (released July 21, 2026) is Google's available default at $1.50/$7.50 per MTok. For frontier reasoning, competitors like Claude Opus 5 ($5/$25) and GPT-5.6 Sol ($5/$30) are shipping and GA, unlike the still-unreleased Gemini 3.5 Pro.

Quick Answer

Why Is Google Pivoting to Gemini 4? (August 2026)

Published: August 9, 2026

The Short Answer

As of August 2026, Google DeepMind is reportedly redirecting focus to Gemini 4 after Gemini 3.5 Pro repeatedly missed benchmarks and stayed stuck in partner testing past its June/July targets — and Gemini 3.6 Flash didn’t close the gap. Gemini 4 is said to be training in parallel, with no published release date, price, or benchmarks. Treat the “pivot” as well-sourced reporting, not an official roadmap.

What Happened to Gemini 3.5 Pro

Milestone	Status
Original target	Mid-2026 (June/July)
Reported issue	Missed reliability + real-world benchmarks
Escalation	Reportedly scrapped an earlier build, restarted parts of pretraining
Revised target	Slipped to ~July 17, 2026
As of August 2026	Still stuck in partner testing

The 3.6 Flash Problem

Google shipped Gemini 3.6 Flash on July 21, 2026 ($1.50/$7.50 per MTok, using up to 65% fewer output tokens) as its new default. But reports say the Flash line also failed to meet critical benchmarks, unable to compete effectively with GPT-5.6 and Claude Opus 5. That fueled the Gemini 4 speculation.

Is Gemini 4 a Replacement?

Not exactly. The most careful reporting says Gemini 4 is being trained in parallel — not as a formal replacement for 3.5 Pro. Nothing is published: no release date, model ID, price, benchmarks, or context window. Anyone quoting Gemini 4 specs today is speculating.

Context: DeepMind’s Rough 2026

The stumbles come amid senior researcher departures (some reportedly to Anthropic) and a competitive frontier where OpenAI (GPT-5.6), Anthropic (Opus 5, Fable 5), and Alibaba (Qwen3.8 Max) are all shipping. Google’s cadence problem is as much about execution and retention as raw model quality.

What To Use Right Now

Google’s best available → Gemini 3.6 Flash ($1.50/$7.50) — fast, cheap, GA.
Frontier reasoning that actually ships → Claude Opus 5 ($5/$25) or GPT-5.6 Sol ($5/$30).
Don’t wait on Gemini 3.5 Pro for production — it’s not GA.

Sources

kie.ai — What is Gemini 4?: kie.ai
Geeky Gadgets — Google reportedly pivots to Gemini 4: geeky-gadgets.com
Geeky Gadgets — Gemini 3.5 Pro delayed again: geeky-gadgets.com