Is Gemini 3.5 Pro out yet in August 2026?

No. As of August 11, 2026, Gemini 3.5 Pro remains in limited preview on Vertex AI and has not launched publicly for general availability. Rumors point to a launch around August 12, 2026, but Google has not confirmed a public GA date. Google shipped Gemini 3.6 Flash and Gemini 3.5 Flash-Lite (both July 21) as stopgaps while Pro slips.

When will Gemini 3.5 Pro be released?

As of August 11, 2026 there is no confirmed public GA date. Leaks and prediction markets have repeatedly moved the window — most recently a rumor of around August 12, 2026. Gemini 3.5 Pro has slipped from earlier July targets and remains in limited Vertex AI preview. Treat any specific date as unconfirmed until Google announces it.

What should I use instead of Gemini 3.5 Pro?

For a shipped frontier model today, use Claude Opus 5 ($5/$25) or GPT-5.6 Sol ($5/$30). For Google-native, cheap, high-volume work, Gemini 3.6 Flash ($1.50/$7.50, the new default since July 21) is GA and strong. Gemini 3.1 Pro remains available if you need a shipped Google Pro-tier model.

Quick Answer

Is Gemini 3.5 Pro Out Yet? August 11, 2026 Status

Published: August 11, 2026

The Short Answer

No — Gemini 3.5 Pro is not publicly out as of August 11, 2026. It remains in limited preview on Vertex AI. The latest rumor points to a launch around August 12, 2026, but Google has not confirmed a public GA date. Meanwhile Gemini 3.6 Flash and Gemini 3.5 Flash-Lite (both July 21) shipped as stopgaps.

What’s Actually Shipped

Gemini 3.6 Flash — GA July 21, 2026, the new default. $1.50/$7.50 per MTok, uses up to 65% fewer output tokens.
Gemini 3.5 Flash-Lite — GA July 21, 2026. $0.30/$2.50 per MTok.
Gemini 3.5 Pro — still limited preview on Vertex AI, announced pricing $15/$60 per MTok, no public GA.

Why It Keeps Slipping

Gemini 3.5 Pro has been one of the most-watched unreleased models of 2026. Prediction markets and leaks have repeatedly moved the window (late July → early August → the current ~August 12 rumor). Google registered the 3.6 Flash and 3.5 Flash-Lite stopgaps precisely to keep the lineup fresh while Pro cooks.

What to Use Right Now

Shipped frontier: Claude Opus 5 ($5/$25) or GPT-5.6 Sol ($5/$30).
Cheap, high-volume, Google-native: Gemini 3.6 Flash ($1.50/$7.50) — GA and excellent.
Google Pro-tier you can use today: Gemini 3.1 Pro ($2/$12).

The Reality Check

Don’t architect around a Gemini 3.5 Pro launch date — it has moved too many times. Build on a shipped model (Opus 5, GPT-5.6 Sol, or Gemini 3.6 Flash) and swap in Pro after it’s actually GA and benchmarked. When it lands at $15/$60, weigh it against the cheaper frontier field before committing.

Sources

QCode.cc — Gemini 3.5 Pro status (limited preview as of Aug 8, 2026): qcode.cc
Google — Gemini API changelog (3.6 Flash / 3.5 Flash-Lite GA): ai.google.dev
CometAPI — Gemini 3.5 Pro release tracker: cometapi.com