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Grok 4.1 debuts as Elon’s xAI says it cuts hallucinations 3× compared to prior models
Bay Area Times
November 18, 2025
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Top stories today:
- Grok 4.1 debuts as Elon’s xAI says it cuts hallucinations 3×
- Google’s Gemini 3.0 may debut today with 92% launch odds priced in
- Databricks said to pursue funding at $130B+ valuation
- Ramp hits $32B valuation in Lightspeed-led $300M round
- Amazon raises $15B in first U.S. bond sale in 3 years
- Bitcoin briefly drops <$90K for first time in seven months
0. Data and calendar
All values as of 6 AM ET / 3 AM PT, other than S&P500 and NASDAQ close (4 PM ET / 1 PM PT).
No major events today.
Listen to our AI-generated podcast summarizing today’s newsletter (beware of hallucinations):
1. Grok 4.1 debuts as Elon’s xAI says it cuts hallucinations 3× compared to prior models
Available to all users on Grok.com, X, and Grok’s iOS and Android apps.
Rolling out in Auto mode and can also be selected through Grok’s model picker.
Grok 4.1 Thinking has topped LMArena’s text leaderboard, by a small margin
Grok 4.1 shows similar bio/chem and cybersecurity risk profiles to other frontier models and remains well below human expert capability, xAI said
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3. Google’s Gemini 3.0 likely to debut today with 92% launch odds priced in
4. Databricks said to pursue funding at $130B+ valuation
