If you’ve been waiting for Google’s big new AI — the Gemini 3.5 Pro that Google announced at I/O in May — you’re not imagining the delay. Gemini 3.5 Pro still isn’t out as of November 9, 2026. On May 19 Google said 3.5 Pro was “already being used internally” and that it looked forward “to rolling it out next month.” On July 21 it said 3.5 Pro was “currently testing with partners” and would be made “broadly available as soon as it’s ready.” It hasn’t released it since — and on October 13 Google released Gemini 4 Argon to Google AI Pro and Ultra subscribers in the Gemini app instead.
So here’s the calm, honest answer to the question you actually typed — when is Gemini 3.5 Pro coming, and what should I use in the meantime? — without the benchmark charts and developer jargon. We’ll keep this page updated if it ships.
Update — November 9, 2026: still no Gemini 3.5 Pro, and Google has moved on to Gemini 4. The latest Google statement on 3.5 Pro we found is from July 21: “currently testing with partners”, broadly available “as soon as it’s ready”. Google shipped Gemini 3.6 Flash and 3.5 Flash-Lite the same day, then 3.7 Flash (August 13), 3.8 Flash (September 2) and Gemini 4 Argon (October 13, in the API and for Google AI Pro and Ultra subscribers in the Gemini app), and it announced Gemini 4 Carbon on October 28 for a subset of cyber defenders only. There’s still no Gemini 3.5 Pro in Google’s API model list, its Google Cloud model list or the Gemini app’s release notes, and Google hasn’t said whether it will still ship it. This update replaces our June and July updates, whose dates and reports have passed.
Is it out yet? No — here’s the real status
Google announced Gemini 3.5 Pro at I/O on May 19, 2026, the same day it released 3.5 Flash, and said it looked forward to rolling 3.5 Pro out the next month. June passed without it; on July 21 Google said it was testing with partners. As of November 9 there’s no release date and — checked today — no gemini-3.5-pro entry in Google’s public API model list.
If you see a blog claiming a specific launch day, treat it with suspicion: Google hasn’t committed to one, and it has published no pricing or specs for 3.5 Pro. As of November 9, 2026, the newest model in the Gemini app’s release notes is Gemini 4 Argon, which Google calls “just the beginning” of the Gemini 4 family.
The reason the wait felt so pointed: Gemini 3.5 Flash shipped on launch day. So everyone had a taste of the new generation, and the flagship was the one piece missing. Since then Google has moved past 3.5 Flash too: 3.6 Flash came to all Gemini app users on July 21, and the Gemini API deprecated 3.5 Flash on October 8, routing its requests to 3.6 Flash.
What it was expected to do (in plain English)
Google never published 3.5 Pro’s specs. Pre-launch coverage filled the gap: TechTimes’ June 6 report was headlined “Google Gemini 3.5 Pro Nears June Launch With 2 Million Token Context And Deep Think Reasoning”, and Codersera’s May 28 launch guide said “Pro targets a 2M-token context window, Deep Think reasoning, and frontier multimodal”. Google has confirmed none of it. Here’s what those two features would mean, set against what you can use now.
A reported 2-million-token memory. “Token” is AI-speak for a chunk of a word, and the context window is how much the model can read at once. A bigger window means you can hand it more material in one go — a long report, a stack of PDFs — and ask questions across all of it. Two million tokens would be double Gemini 3.5 Flash’s window of about 1 million tokens; Gemini 4 Argon already has a 1-million-token window in Google’s API.
A reported “Deep Think” mode. The reports put Deep Think on 3.5 Pro’s list. In the Gemini app, Google has offered Deep Think to Google AI Ultra subscribers (its release note of February 12, 2026), and as of November 9, 2026, Ultra starts at $99.99 a month in the US, against $19.99 for Google AI Pro. So if 3.5 Pro ships with it, the deepest mode may not be one most people touch.
Will it be free?
Google hasn’t said, and it has published no 3.5 Pro pricing. For comparison, Gemini 4 Argon, which Google called its most capable model when it launched it on October 13, is for Google AI Pro ($19.99 a month in the US) and Ultra (from $99.99) subscribers in the Gemini app, as of November 9, 2026. Since October 9, 2026, personal accounts without a plan use “Auto”, which sends most prompts to Flash-Lite, Google’s fastest model; prompts that need deeper reasoning may go to Flash or Pro. Developers pay per token for Gemini 4 Argon in the API.
What to use right now while you wait
You’re not stuck. The practical reality is that today’s tools already do most of what a normal person needs:
- Staying in Google’s world? On a Google AI Pro or Ultra plan you get Gemini 4 Argon, which Google called its most capable model when it launched it on October 13. Without a plan, the app’s Auto setting picks the model for you, mostly Flash-Lite.
- Want a careful, thorough thinker today? ChatGPT and Claude both have strong reasoning modes available right now, and our which AI should you use? guide breaks down who’s best at what.
- Curious but new to all this? Our AI Fundamentals course gets you comfortable with any of these assistants in plain English, no jargon required.
Switching later is easy, too — if you do move to Gemini, the import-your-history guide makes the move painless.
What this means for you
If you just use the free Gemini app: since October 9, the app’s Auto setting sends most of your prompts to Flash-Lite, and prompts that need deeper reasoning may go to Flash or Pro. You don’t need to wait for 3.5 Pro to get value from the app.
If you pay for Gemini today: Google AI Pro and Ultra subscribers already have Gemini 4 Argon. If 3.5 Pro ever ships, read which plans get it: Google’s February 12, 2026 release note put Deep Think in the app with Ultra, which starts at $99.99 a month in the US as of November 9, 2026.
If you’re a student or researcher: the reported 2-million-token memory was the exciting part — feeding in whole textbooks, papers, or case archives at once. Gemini 4 Argon already has a 1-million-token window in Google’s API.
If you’re a developer: Gemini 4 Argon is generally available in the API at an introductory $2 per million input tokens and $10 per million output tokens through November 30, 2026 ($4 and $20 after). There’s no 3.5 Pro in the API to plan around.
What this can’t tell you (yet)
- The release date. Google said “next month” in May and “as soon as it’s ready” in July, and nothing since on the Google pages we checked. Anyone who gives you a date is guessing.
- Whether it ships at all. Google hasn’t said whether 3.5 Pro will still come out now that Gemini 4 Argon is here.
- The pricing. Google hasn’t published any 3.5 Pro price; the plan prices above are Google’s US prices as of November 9, 2026.
- The real-world limits. A 2-million-token memory sounds huge; whether a model uses all of it well is something only hands-on testing would show.
- Whether it’ll feel different to you. For everyday questions, the models you already have may be all you need. A flagship matters most for big, complex, document-heavy work.
The bottom line
Gemini 3.5 Pro was announced in May and, as of November 9, 2026, still isn’t here — and Google has since moved on to Gemini 4 Argon. The honest move is to not hold your breath for a date: use what’s live today (Argon on Google AI Pro or Ultra, Auto on a free account), and if 3.5 Pro does ship, check which plan gets it before you pay. We’ll refresh this page if it ships.
In the meantime, the best thing you can do is get genuinely good at the AI you already have. Our AI Fundamentals course and our ChatGPT vs. Claude breakdown will make you faster with today’s tools — and ready for tomorrow’s the day it arrives.
Sources
- Gemini 3.5: frontier intelligence with action — Google (May 19, 2026)
- Introducing Gemini 3.6 Flash, 3.5 Flash-Lite, and 3.5 Flash Cyber — Google (July 21, 2026)
- Gemini 4 Argon: Built to solve your hardest problems — Google (October 13, 2026)
- Gemini 4 Carbon: our next frontier model — Google (October 28, 2026)
- Gemini API release notes — Google AI Studio
- Gemini Apps release notes — Google
- Changes to Gemini model access and limits — Gemini Apps Help
- Google AI plans (US) — Google
- Pre-launch reports: Google Gemini 3.5 Pro Nears June Launch With 2 Million Token Context And Deep Think Reasoning — TechTimes (June 6, 2026), Gemini 3.5 Pro: The June 2026 Launch Guide — Codersera (May 28, 2026)
