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Gemini 3 is here — Pro preview, Deep Think, and benchmark highlights

Google officially released Gemini 3 and opened Gemini 3 Pro in preview, introducing a Deep Think reasoning mode and new state-of-the-art benchmark results. Here’s a concise recap from the official announcement.

Gemini 3 release highlights

TL;DR

Google has released Gemini 3, describing it as its most intelligent model. Gemini 3 Pro is available in preview today, and Google also introduced Gemini 3 Deep Think for enhanced reasoning. The official announcement highlights new state‑of‑the‑art benchmark scores, a 1M token context window, and availability across AI Studio, Vertex AI, and Gemini CLI.

What Google announced

From Google’s official release:

  • Gemini 3 Pro preview is available now
  • Deep Think reasoning mode was introduced
  • 1M token context window for long‑form multimodal tasks
  • Gemini 3 is positioned as Google’s best multimodal and agentic model

Benchmark highlights (official)

The release lists strong SOTA results, including:

  • LMArena: 1501 Elo
  • Humanity’s Last Exam: 37.5% (no tools)
  • GPQA Diamond: 91.9%
  • MathArena Apex: 23.4%
  • MMMU‑Pro: 81%
  • Video‑MMMU: 87.6%
  • SimpleQA Verified: 72.1%

On the developer side, Google notes:

  • WebDev Arena: 1487 Elo
  • Terminal‑Bench 2.0: 54.2%
  • SWE‑bench Verified: 76.2%

Availability

Google says Gemini 3 is available via:

  • Google AI Studio
  • Vertex AI
  • Gemini CLI
  • Google Antigravity (agentic development platform)
  • Third‑party platforms including Cursor, GitHub, JetBrains, Manus, Replit

Why it matters

Gemini 3’s benchmark jumps and tooling support make it a strong candidate for:

  • Multimodal reasoning workflows
  • Agentic coding systems
  • Production‑grade coding assistants

How to evaluate in your stack

  1. Run A/B tests against your current default model.
  2. Compare latency + cost across providers.
  3. Measure tool‑use reliability in real workflows.

For model‑agnostic routing, see Models, Pricing, and the Blog.

Sources

  • Google official release: Gemini 3: Introducing the latest Gemini AI model
  • Reddit thread: “Gemini 3 is launched” (r/LocalLLaMA)