The Most Anticipated Google Model of 2026
At Google I/O 2026 on May 19, Sundar Pichai took the stage at Shoreline Amphitheatre and launched Gemini 3.5 Flash immediately — then told the crowd to wait "one more month" for Gemini 3.5 Pro. The announcement reportedly drew audible groans from developers eager for instant access.
As of early June 2026, Gemini 3.5 Pro is in internal use at Google and limited enterprise preview on the Gemini Enterprise Agent Platform. Public general availability is expected by the end of June.
Key Specifications
A 2-million-token context window means the model can ingest roughly 600 pages of text in a single request — the equivalent of a full legal contract corpus, an entire large codebase, or an hour-long meeting transcript packed with attachments. This is a direct area where Google is betting it can differentiate from OpenAI and Anthropic, neither of which offers this context depth at commercial scale today.
Deep Think is Gemini's extended chain-of-thought reasoning mode, designed for hard math, science, and complex coding problems. Similar in spirit to OpenAI's o-series or Anthropic's extended thinking, it allocates more compute to carefully step through a problem before answering.
The Full Gemini 3.5 Family
Google's Gemini 3.5 lineup rebrands around a new mantra: "frontier intelligence with action." Three product lines work together:
| Model | Purpose | Status |
|---|---|---|
| Gemini 3.5 Flash | Speed + agentic workflows | Generally Available |
| Gemini 3.5 Pro | Deep reasoning, 2M context | June 2026 (expected) |
| Gemini Omni Flash | Any input → video output | GA (Plus/Pro/Ultra) |
| Gemini Spark | 24/7 personal AI agent | Rolling out to US Ultra subscribers |
Google Antigravity: The Agent-First Platform
Gemini 3.5 runs on Google Antigravity, the company's new agent development platform. Developers can access it via Gemini API in Google AI Studio and Android Studio. Enterprises get access through the Gemini Enterprise Agent Platform with built-in governance.
Gemini Spark — the 24/7 personal agent — uses Gemini 3.5 with the Antigravity harness. It integrates deeply with Gmail, Docs, and Slides, continuing to work even when the user's device is locked. MCP connections to Canva, OpenTable, and Instacart are already live.
Gemini 3.5 Pro is expected to be included in Google AI Pro ($20/month) and Ultra plans. Deep Think reasoning mode will likely be gated to Ultra. Developer API pricing has not been announced. Until the model ships publicly, specs remain Google's claims — treat them as targets, not verified benchmarks.
Competitive Picture
The frontier reasoning model market in mid-2026 is a three-way race: OpenAI GPT-5.5, Anthropic Claude Opus 4.8, and soon Gemini 3.5 Pro. Google's strongest card is the 2M token context window, a capability the other two providers have not yet matched at commercial scale.
Whether Gemini 3.5 Pro delivers on its benchmark claims will only be known once independent evaluators can run tests after general availability.
- Gemini 3.5 Pro: 2M-token context + Deep Think reasoning, targeting June 2026 GA
- Absorbs the old Ultra-tier positioning within the new 3.5 lineup
- Google Antigravity platform ties all Gemini models into an agent-first stack
- Gemini Spark 24/7 agent now rolling out to US Google AI Ultra subscribers
- Performance claims are Google's own — independent benchmark verification pending
— Gemini 3.5 Official Launch Blog (Google)
— Gemini API Developer Documentation
— Google AI Studio — Try Gemini API Free
— All Google AI Announcements from May 2026