Gemini 3.5 Flash is here: Google’s smartest speed model promises better coding and agents

Source: Android Authority

TL;DR

• At Google I/O 2026, Google introduced the Gemini 3.5 family of AI models, starting with Gemini 3.5 Flash.
• Gemini 3.5 Flash is claimed to be four times faster than competing frontier models and outperforms Gemini 3.1 Pro on coding and agentic benchmarks.
• Gemini 3.5 Flash is rolling out globally as the default model for billions of users in the Gemini app and Google Search.

Google released Gemini 3 in November 2025, followed by Gemini 3.1 in February 2026. Today at Google I/O 2026, the company announced Gemini 3.5, beginning with Gemini 3.5 Flash, which is already being deployed to billions of users worldwide.

Google says the Gemini 3.5 family combines frontier intelligence with action, enabling advanced reasoning, deep logical thinking, and autonomous execution of long‑horizon tasks.

Gemini 3.5 Flash: Features and highlights

Google claims Gemini 3.5 Flash delivers intelligence that rivals large flagship models across multiple dimensions while maintaining the speed expected from the Flash series. It is the company’s strongest agentic and coding model yet, outperforming Gemini 3.1 Pro on challenging coding and agentic benchmarks. In terms of output tokens per second, it is four times faster than other frontier models.

The balance of speed and performance makes Gemini 3.5 Flash ideal for long‑horizon agentic tasks. It can rapidly plan, build, and iterate to solve real‑world problems such as developing new applications, maintaining codebases, or preparing financial documents.

Gemini 3.5 Flash also generates richer, more interactive web UIs and graphics.

Google notes that Gemini 3.5 as a whole is less likely to produce harmful content or mistakenly refuse safe queries, thanks to advanced safety training, mitigations, and interpretability tools that let developers inspect the model’s reasoning before it responds.

Gemini 3.5 Flash is already rolling out

Gemini 3.5 Flash is available today to billions of people globally through the Gemini app and AI Mode in Google Search, where it serves as the default model.

For developers, Gemini 3.5 Flash can be accessed via:

• Google Antigravity – Google’s agentic development platform
• Gemini API – available in Google AI Studio and Android Studio
• Gemini Enterprise – through the Gemini Enterprise Agent Platform

Google is also integrating Gemini 3.5 Flash into Gemini Spark, a personal AI agent that runs 24/7 to help users navigate their digital lives and take actions on their behalf. Gemini Spark is rolling out to trusted testers now, with a broader beta for Google AI Ultra subscribers in the US launching next week.

Gemini 3.5 Pro is coming soon

Google indicated that work on Gemini 3.5 Pro is already underway. Employees are using the Pro model internally, and the company aims to make it publicly available next month.