# Gemini 3.5 Pro: Fourth Delay, No GA Date

Gemini 3.5 Pro is "months behind schedule", its fourth delay since May. Coding is the core shortfall. Alphabet stock dropped ~4% as three Chinese frontier models launched.

By Neomanex. Updated 2026-10-07.

Gemini 3.5 Pro — Google's would-be third US frontier model — is reported to be on its fourth postponement and "months behind schedule," Bloomberg reported July 16, citing 10 current and former Google employees. The core shortfall: coding capabilities that fall short of internal benchmarks. The model announced at Google I/O in May with a June launch target now has no confirmed GA date.

## What happened

Google updated Gemini 3.5 Pro's training data late last month in an attempt to close the performance gap — and the results missed internal targets. The reported delay timeline has stretched from June → late June → July → indefinite, according to Bloomberg.

In response, Google is reportedly preparing a stopgap "Gemini 3.6 Flash" while 3.5 Pro remains in the lab, Bloomberg reports. A Google spokesperson told the outlet: "We're shipping quickly across a wide range of models while keeping them highly cost-effective for customers." The models shipping are Flash variants — not the Pro frontier model announced at I/O.

## Why Gemini 3.5 Pro's delay matters

**The US frontier gap is widening.** Only two US frontier models are shipping today — [Claude Fable 5](/models/fable-5) and [GPT-5.6 Sol](/models/gpt-5-6-sol) — while three Chinese open-weight frontier models launched this month: Tencent Hy3, Z.ai GLM-5.2, and Moonshot AI's Kimi K3, a 2.8T-parameter model that reportedly beat Fable 5 for #1 on Arena Code WebDev the same day Bloomberg published the delay.

**Alphabet shareholders are paying attention.** The stock dropped ~4% (Bloomberg reports roughly $225 billion in market cap was erased in a single session). Alphabet has guided for $180–190 billion in full-year 2026 capex — more than double 2025 spend — and expects that figure to rise again in 2027 (Bloomberg; CNBC, 2026).

**The brain drain compounds the problem.** Four senior DeepMind researchers departed in a single week in late June: Noam Shazeer (Gemini co-lead) to OpenAI, and John Jumper, Jonas Adler, and Alexander Pritzel to Anthropic. DeepMind staff have internally flagged that Google lacks a credible commercial coding product — from the company that invented the Transformer architecture (Bloomberg, 2026).

## What changes for you

If you were waiting for [Gemini 3.5 Pro](/models/gemini-3-5-pro) as a third frontier option, stop. Google has not committed to a new timeline, and the "3.6 Flash" stopgap is not a frontier model.

- **Evaluate [Claude Sonnet 5](/models/claude-sonnet-5)** ($3/$15 per 1M tokens) or **[GPT-5.6 Sol](/models/gpt-5-6-sol)** ($5/$30) for production deployments. Both are shipping, independently benchmarked, and GA-priced with stable APIs.
- **Monitor the open-weight frontier.** Kimi K3 is now competitive with US frontier models on coding benchmarks — it may serve as a third option without waiting for Google.
- **Watch for Gemini 3.6 Flash in Q3.** It won't match frontier coding, but for multimodal and 1M+ token context workloads, it may be a viable stopgap until 3.5 Pro ships.

## FAQ

**Will Gemini 3.5 Pro ship in 2026?**
Unknown. Google has not provided a revised timeline. The reported fourth delay and "months behind" language from Bloomberg suggest Q4 at the earliest, but the model could slip further or ship below internal targets.

**What is Gemini 3.6 Flash?**
A stopgap model reportedly in preparation while 3.5 Pro remains in training. Flash variants typically prioritize speed and cost over raw capability. Do not expect frontier-level coding from a Flash release.

**How does this affect Google's frontier position?**
Gemini 3.5 Pro's 2M-token context window, native multimodal pipeline, and Deep Think reasoning remain real capabilities — if and when they ship. But the competitive window is closing. Every month without a shipping Pro model widens the gap Google has to close, and the open-weight frontier models are not waiting.

Canonical: https://neomanex.com/news/gemini-3-5-pro-delayed-fourth