Gemini 3.5 Flash at a glance
Gemini 3.5 Flash opened the Gemini 3.5 series at I/O 2026. Google says it beats Gemini 3.1 Pro on hard coding and agent benchmarks, and it became the default model in the Gemini app and AI Mode in Search.
What changed with Gemini 3.5 Flash
On May 19, 2026, at Google I/O, Google introduced the Gemini 3.5 family and released 3.5 Flash first. It reached the Gemini app and AI Mode in Search, where it became the default model, plus Google Antigravity, the Gemini API in Google AI Studio and Android Studio, Gemini Enterprise Agent Platform and Gemini Enterprise. Google said 3.5 Pro would follow the next month; in a July 21 update it said 3.5 Pro was still being tested with partners.
Google reported that 3.5 Flash outperforms Gemini 3.1 Pro on Terminal-Bench 2.1 (76.2%), GDPval-AA (1656 Elo) and MCP Atlas (83.6%), scores 84.2% on CharXiv Reasoning, and generates output about four times faster than other frontier models. Shopify, Salesforce, Ramp, Xero and Databricks were among the early users it named. These are Google's own figures.
Where to compare Gemini 3.5 Flash
Independent leaderboards and official resources for comparing this model yourself. Rankings change often; each site shows its own current data.
Why Gemini 3.5 Flash matters for businesses
Google is pitching 3.5 Flash at long-running, multi-step agent work at Flash-class speed, which suits back-office automation such as invoice reading, onboarding document review and workflows that run for days. Agencies already building on Google can test it directly in Antigravity or the Gemini API.
Sources for this story
- Gemini 3.5: frontier intelligence with action (opens in a new tab)Official
Google · blog.google
- Introducing Gemini 3.6 Flash, 3.5 Flash-Lite, and 3.5 Flash Cyber (opens in a new tab)Official
Google · blog.google
Last verified: . IA Compa summarizes public announcements for business readers. We are not affiliated with the companies mentioned. Always confirm details, pricing, and availability with the official source.
- #llm
- #gemini
- #agents
- #google-io
