Google launches Gemini 3
Confirmed
Importance: historic (5 of 5)The takeaway
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.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- Historic (5 of 5)
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 AstraIn its training data
- Claude Opus 5.5In its training data
- Gemini 4 HydrogenIn its training data
- Grok 4.7In its training data
It happened before the cutoffs of all four assistants, so it can be in their training data.
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.
Sources
5 sources from 5 sites. Numbers match the chips in the text.
5 sources: 2 primary, 1 press, 2 reactions
Primary
- A new era of intelligence with Gemini 3 (Google)blog.google, official
- Gemini 3 (Google DeepMind)deepmind.google, official
Press
- TechCrunch: Gemini 3 refused to believe it was 2025, and hilarity ensuedtechcrunch.com, press
Reactions
- Karpathy on X: Gemini 3 refused to believe it was 2025x.com, discussion
- Alice Blair (LessWrong): Gemini 3 is Evaluation-Paranoid and Contaminatedlesswrong.com, discussion
Changes
- Added the temporal-confusion quirk (Karpathy, Alice Blair) from docs/cutoff-blindness research
- Filed