Latest edition
Closing Time: The murder tip that came from an AI
TechCrunch reports an Anthropic model sent Philadelphia police a false tip about an unsolved murder, and no one noticed for more than two months.
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All Deep DivesLonger takes on AI news, culture, and market moments.
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How Dartmouth Became the Birthplace of AI
A modest grant and an ambitious summer gathering helped establish a field whose hardest questions remain unsettled seventy years later
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All Hands OnLatest practical deep dive — setup guides and playbooks you can run today.
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Grok Bot Expands Beyond Grok
A proactive Main Bot, an emerging native email workflow and models from rival AI labs are changing what you can delegate. Here is what to try first.
- Grok Bot
- AI agents
- xAI
- Cursor
The Latest Videos
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Plexo Capital’s Lo Toney on OpenAI: Confusion over a revenue number can trigger a sharp reactionView channelLiam Ottley
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How AI Turns 3 Days of Work Into 3 MinutesView channelNo Priors
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Beam: The Great American Open Model with ReflectionAI Co-Founder and CEO Misha LaskinView channelAI Market Movers
US market is closed. Showing the last cash session’s biggest winners and losers among the listed names we track. updated just now.
US market closed
Biggest winners
| Ticker | Name | Price | Day |
|---|---|---|---|
| CCI | Crown Castle | 79.64 | +15.6% |
| RXRX | Recursion | 4.36 | +10.4% |
| AMT | American Tower | 182.24 | +9.30% |
| ZS | Zscaler | 233.73 | +7.80% |
| SNOW | Snowflake | 368.89 | +7.42% |
Biggest losers
| Ticker | Name | Price | Day |
|---|---|---|---|
| HPQ | HP Inc. | 30.20 | −6.91% |
| AMKR | Amkor | 49.12 | −3.69% |
| ARM | Arm Holdings | 266.28 | −3.27% |
| MARA | Marathon Digital | 9.65 | −2.62% |
| SOUN | SoundHound AI | 5.39 | −2.36% |
Recent editions
All editions
The AI industry is rehearsing the day after
Axios reports top executives at Anthropic, OpenAI and other AI companies are privately gaming out how the public and Washington would react after a catastrophic AI event, with many insiders expecting a major incident within six to 12 months.
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Closing Time: The $18 billion gap that sank AI stocks
OpenAI told investors it hit roughly $50 billion in annualized revenue at the end of September, CNBC confirmed after the Financial Times first reported the figure.
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The AI boom is running on borrowed money
The Wall Street Journal reports Broadcom is working to arrange more than $50 billion in financing for the custom AI chip it is building with OpenAI, with Apollo Global Management and Blackstone among the lenders in talks.
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Closing Time: ChatGPT is done just talking
OpenAI is rolling out GPT-6 in ChatGPT with Intelligent UI, answering with diagrams, charts, buttons and tools it builds on the spot (The Verge).
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The proofs are coming faster than anyone can check
The Wall Street Journal reports OpenAI has released findings on more than 300 open math problems, a month after one of its internal models cracked a Millennium Prize Problem.
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Closing Time: The hidden power inside old reactors
Google signed a 20-year deal for 890 megawatts of new nuclear output from upgrades at 11 Constellation Energy reactors, with the first upgraded power due in 2028.
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Who pays when the agent goes rogue?
OpenAI apologizes to Australia for a rogue agent’s hack, Wikimedia finds the same agents on its wikis, and insurers start asking who gets the bill.
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Closing Time: They still don’t know how to control it
Jacob Coxon told the NYC Council: “We do not know how to control any AI system yet.”
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He wrote the safety reports. Then he walked out.
The Guardian reports David Robinson, who led the writing of the safety reports that accompanied OpenAI’s product releases, has quit and explained why in an essay for The Atlantic headlined “I quit OpenAI because its culture is broken.”
Read the editionTop models
Highest AA Index scores among the frontier and open-weight models we track. As of 8 Oct 2026.
Frontier
| # | Model | Lab | AA Index |
|---|---|---|---|
| 1 | Claude Fable 5.1 | Anthropic | 66 |
| 2 | Claude Mythos 5.1 | Anthropic | 66 |
| 3 | Claude Opus 5 | Anthropic | 63 |
| 4 | Claude Fable 5 | Anthropic | 62 |
| 5 | GPT-6 Astra | OpenAI | 61 |
Open models
| # | Model | Lab | AA Index |
|---|---|---|---|
| 1 | Kimi K3 | Moonshot / Kimi | 60 |
| 2 | GLM-5.3 | Zhipu / Z.AI | 60 |
| 3 | Qwen3.8 2.4T A95B | Alibaba / Qwen | 58 |
| 4 | GLM-5.3-Flash | Zhipu / Z.AI | 57 |
| 5 | DeepSeek V4 Pro 0813 | DeepSeek | 53 |