Wednesday 7 October 2026
Top stories today:
OpenAI releases internal model’s findings on 377 math problems
Apple to develop LG-branded smart home devices, including doorbell
Mistral debuts Large 4, ranked top model outside U.S., China
Meta, Walmart, Shopify, Stripe unveil protocol for AI bot interactions
Lambda to raise up to $4B at up to $18.5B post-money valuation
0. Data & Calendar
All values as of 6 AM ET / 3 AM PT, other than S&P500 and NASDAQ close (4 PM ET / 1 PM PT).
All times are ET.
Listen to our AI-generated podcast summarizing today’s newsletter (beware of hallucinations):
1. OpenAI releases internal model’s findings on 377 math problems
Algebra, number theory, theoretical computer science, mathematical logic, and topology are among the topics covered in the new findings.
700+ papers were released detailing the findings.
OpenAI created a GitHub repository to share many of the proofs in Lean.
~3 hours of ChatGPT Pro thinking was equivalent to the compute used for the average result.
Sep.: a Millennium Prize Problem was cracked by OpenAI’s internal model, drawing backlash from the math world.
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3. Apple said to develop LG-branded smart home devices, including doorbell, thermostat
LG Smart Deadbolt Lock has already appeared on the FCC, without any reference to Apple’s involvement:
At least a few months away, LG-branded accessories aren’t expected to reach consumers.
LG has sought regulatory approvals for the devices.
Wi-Fi, Bluetooth, Thread, and Matter support is expected across many of the devices.
Oct. 13: Apple is reportedly unveiling an upgraded HomePod mini and a new TV set-top box.
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5. Mistral debuts 1T-parameter Large 4, ranked top model outside U.S., China
Mistral Large 4 scored 38 on the Artificial Analysis Intelligence Index, comparable to DeepSeek V4.1 Flash and GPT-6 Luna:
Costs $1.36/$4.18 per 1M input/output tokens, vs. DeepSeek V4.1 Flash’s $0.30/$1.20 during peak hours and GPT-6 Luna’s $0.10/$0.50.
50% off for the first 2 weeks, at $0.68/$2.09.
512K-token context window.
Available in research public preview via Mistral’s API.
Oct. 27: model weights will be released.
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PhD researchers and domain experts author verified, containerized tasks in the Terminal-Bench and GDPval mold, spanning coding, finance, accounting, engineering, and more.
On our harder tasks, frontier models score 0 out of 5.
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7. Meta, Walmart, Shopify, Stripe unveil protocol to standardize AI bot interactions with businesses
The Personal Agent Protocol aims to secure interactions between AI bots and businesses.
Sierra, co-founded by former Salesforce co-CEO Bret Taylor, is part of the group.
“It is kind of chaos until such a standard exists,” Taylor said.
Meta’s Muse already has millions of U.S. users and is “growing rapidly,” Meta VP David Singleton said.
