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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. Get the chance to peek inside founders and leaders’ brains and see how they think about going from zero to 1 and beyond. Join thousands of weekly readers at Google, OpenAI, Stripe, TikTok, Sequoia, and more. Check all the tools and more here, and outperform the competition. *Sponsored. 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. Memorandum lands in the inboxes of founders, C-level executives, VCs, and investors every single day. These are the people making decisions in tech, and they pay attention: a 47.4% open rate and a 3.9% click-through rate, with 86% of readers in the US and 12% in Canada. Featured placements sit at the top of the email with your image, copy, and CTA button. If your product is built for decision-makers, this is where they read. *Sponsored. 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. Athyna Intelligence builds what comes after. 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. *Sponsored. 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.
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