Gemini 3.5 Flash: Google's New Frontier Model for Agentic Coding

Google has officially launched Gemini 3.5 Flash at I/O 2026, marking a significant leap in agentic AI capabilities. This new model represents Google's most advanced offering for coding workflows and long-horizon tasks.

Key Specifications

Benchmark Performance

Gemini 3.5 Flash delivers exceptional performance across key benchmarks:

Designed for Agentic Workflows

Gemini 3.5 Flash is specifically optimized for:

• Long-horizon tasks: Capable of working for days on complex projects
• Multi-agent coordination: Supports collaborative subagents for parallelized workflows
• Real-world coding: Outperforms previous models on coding and agentic benchmarks
• Cost efficiency: Delivers frontier-level capabilities at less than half the price

Using via Antigravity

The model powers Google's Antigravity 2.0 platform:

import { streamText } from 'ai';

const result = streamText({
  model: 'gemini-3.5-flash',
  prompt: 'Build a full-stack application with Next.js and PostgreSQL',
});

Cost Savings Potential

Google estimates that if companies shifted 80% of workloads from other frontier models to 3.5 Flash, they could save over $1 billion annually.

Availability

Gemini 3.5 Flash is available today across:

• Gemini app
• Google AI Studio
• Android Studio
• Gemini API
• Antigravity 2.0

Gemini 3.5 Pro is expected next month with even greater reasoning capabilities.