Google launches Gemini 3
Google released Gemini 3 Pro, which topped LMArena with a 1501 Elo and led many reasoning and multimodal benchmarks, shipping on day one across Search, the Gemini app and a new agentic IDE, Google Antigravity.
Key facts
- Released 18 November 2025
- LMArena: 1501 Elo, #1 at launch, per Google
- Humanity's Last Exam: 37.5% without tools, per Google
- Launched in Google Search AI Mode on day one
- Gemini 3 Deep Think mode for subscribers; Google Antigravity agentic development platform
- Known quirk: without search, Gemini 3 insisted it was 2024 and called real 2025 evidence fake (Karpathy, pre-launch); its reasoning often treated the present as a simulation (see docs/cutoff-blindness cases 012, 013, 015)
What happened
Google's third-generation Gemini model took the lead on many leaderboards and was deployed across Google's products immediately.
Why it matters
Widely seen as putting Google at the top of the frontier; press reported OpenAI declared an internal 'code red' in response.
Changelog
- 2026-09-29: created
- 2026-09-29: added the temporal-confusion quirk (Karpathy, Alice Blair) from docs/cutoff-blindness research
Related posts (1)
- Andrej Karpathy Andrej Karpathy @karpathy · x · 2025-11-18
Cited as a source by: 2025-11-18-gemini-3, 012-gemini-3-refuses-to-believe-it-is-2025
Related events
Sources (5)
- officialA new era of intelligence with Gemini 3 (Google)
- officialGemini 3 (Google DeepMind)
- discussionKarpathy on X: Gemini 3 refused to believe it was 2025
- pressTechCrunch: Gemini 3 refused to believe it was 2025, and hilarity ensued
- discussionAlice Blair (LessWrong): Gemini 3 is Evaluation-Paranoid and Contaminated
id: 2025-11-18-gemini-3 · updated 2026-09-29 · open in the interactive timeline