# Gemini 3.5 Pro Months Behind: Coding Shortfall After a Public I/O Promise

Times of AI Desk · 2026-07-16 · Models

[https://timesof.ai/2026/07/google-gemini-3-5-pro-delay](https://timesof.ai/2026/07/google-gemini-3-5-pro-delay)

> Reuters, citing Bloomberg, reported Google is months behind on Gemini 3.5 Pro—particularly coding—after Sundar Pichai pointed to a June path at I/O. Strong contemporaneous reporting, not a Google blog confession with metrics. Mid-July changelogs still show Flash-class GA, not Pro.

Gemini 3.5 Pro was supposed to be Google’s answer to the mid-2026 model stack. A multi-month slip after a public I/O promise is not just product ops—it is a **credibility and share** problem in the enterprise bake-offs that lock annual model spend.

**Reuters**, citing **Bloomberg**, reported that **Google** is **months behind schedule** on releasing **Gemini 3.5 Pro**, its most powerful flagship model, while improving capabilities—**particularly coding**. At **Google I/O 2026** in May, **Sundar Pichai** had indicated a **June** release path after shipping the lighter **Gemini 3.5 Flash**. As of mid-July, public Gemini API changelogs still list Flash-class GA and related tools—not a general **gemini-3.5-pro** launch.

## What is confirmed vs still leak-track

| Claim | Status |
|-------|--------|
| Flagship **3.5 Pro** delayed past June target | Strong contemporaneous reporting (Bloomberg → Reuters, July 16) |
| Delay driven by internal performance goals, **coding** shortfall | Reported; not a Google blog confession with metrics |
| **3.5 Flash** already GA (May 19) and later product notes | Documented in Gemini API changelog |
| July 17 public Pro GA / 2M context / Ultra Deep Think pricing | **Leak-track only**—not official; Mashable and others noted Pro still missing as of July 17 |

Google has not published a new official ship date in the sources used for this article. Enterprise previews on Vertex and partner testing are reported separately from consumer/API general availability.

## Competitive context

The delay lands after **OpenAI GPT-5.6** public unlock (**July 9**), **xAI Grok 4.5** (**July 8**), **Meta Muse Spark 1.1** (**July 9**), and **Moonshot Kimi K3** (**July 16**). Each day Pro stays gated, Google’s narrative shifts from “catch-up sprint” to “missing the summer frontier window”—especially on agentic coding, where Sol, Fable, Grok 4.5, and now K3 are already in developer hands.

## Limits

- Coding shortfall metrics are not in a Google primary—Bloomberg→Reuters reportage.
- No official new ship date in sources used here.
- July 17 Pro GA rumors are leak-track only.

## Sources

- Reuters: “Google Gemini launch delayed as tech falls short of internal goals, Bloomberg News reports” (July 16, 2026)
- Mashable: “Where is Gemini 3.5 Pro?” noting no launch as of July 17 and I/O June promise context
- Google AI Gemini API changelog (public model listings through mid-July 2026; Flash GA May 19, no 3.5 Pro GA entry)