Google Gemini 3 Released — Pro, Flash & Deep Think Explained
Google made a sweeping AI announcement on April 22, 2026, launching the Gemini 3 model family. The release covers three distinct tiers — Gemini 3 Pro, Gemini 3 Flash, and the new Gemini 3 Deep Think reasoning mode — and positions Google as the strongest competitor to OpenAI on multimodal and agentic tasks.
The Gemini 3 Model Family
Gemini 3 Pro
Gemini 3 Pro is Google's flagship, designed for complex reasoning, ambitious agentic workflows, and large-scale document understanding. It shipped in preview first, integrated across Google Workspace, Google AI Studio, and Vertex AI. Pro inherits a 1 million-token context window and natively handles text, images, video, audio, and code in a single prompt.
Gemini 3 Flash
Gemini 3 Flash is the new default model in the Gemini app, replacing Gemini 2.0 Flash. Google describes it as "frontier intelligence built for speed at a fraction of the cost" — optimised for everyday consumer use, fast API responses, and high-throughput production workloads.
Gemini 3 Deep Think
Deep Think is an enhanced reasoning mode layered on top of Gemini 3 Pro. It's built specifically for difficult scientific, mathematical, and engineering problems — akin to OpenAI's "o-series" thinking models, but integrated directly into the Gemini family. Google claims Deep Think pushes Gemini 3 performance beyond any previous Google model on hard reasoning benchmarks.
Key Capabilities
- Best-in-class multimodal understanding — text, images, video, audio, and documents in one call.
- Vibe coding — Google markets Gemini 3 as the most powerful model for AI-assisted rapid prototyping.
- Interactive simulations — the Gemini app can now generate runnable interactive simulations from a single text prompt.
- Agentic workflows — native tool use, multi-step planning, and memory across long sessions.
Gemini 3 vs the Field
| Model | Context | Multimodal | Reasoning Mode |
|---|---|---|---|
| Gemini 3 Pro | 1M tokens | Full (text/image/video/audio) | Deep Think |
| GPT-5.5 | 256K tokens | Text + image | o-series separate |
| DeepSeek V4 Pro | 1M tokens | Text + image | Built-in chain-of-thought |
| Claude Sonnet 4.6 | 200K tokens | Text + image | Extended thinking |
Gemini 3.1 Pro
Alongside the main launch, Google also released Gemini 3.1 Pro in preview — an incremental update to validate further improvements in agentic workflows before wider general availability. If history is a guide, 3.1 Pro will become the default API model within a few weeks.
Who Should Use Gemini 3?
- Multimodal projects (video, audio, mixed media) — Gemini 3 Pro is the clear leader here.
- Google Workspace power users — deep integration with Docs, Sheets, and Gmail makes Gemini 3 the obvious choice.
- Developers on a budget — Gemini 3 Flash offers competitive performance at a low price point.
- Researchers and engineers with hard math/science problems — Deep Think mode is worth trying.
Compare Gemini against OpenAI in our ChatGPT vs Gemini and Claude vs Gemini guides.
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