Mistral Opens Trillion-Parameter ML4 as AWS Hits $46B on $220B Capex

Frontier model releases, cloud infrastructure earnings, and enterprise AI deployments across San Francisco, Seattle & Global AI Platforms on October 29, 2026 highlighted the accelerating shift toward open-weight cyber defense, massive data center capital expenditures, and vertical AI applications.

1. Mistral Opens Trillion-Parameter ML4 Weights as OpenAI Updates Model Spec and Partners With Ropes & Gray

As reported by TechCrunch writer Lucas Ropek and OpenAI News (Ropes & Gray case study), Trillion-parameter ML4 ("Le Chonk") uses 47% fewer tokens than GLM-5.3; OpenAI sets 5 Model Spec values & Ropes & Gray (340 partners, 1,500 lawyers) deploys GPT-6 Astra:

• Mistral Large 4 ("Le Chonk"): French AI developer Mistral published open weights on Hugging Face and via API for Mistral Large 4 (ML4), claiming top open-model ranking on Artificial Analysis's Coding Agent Index and parity with GLM-5.3 on cyber tasks while consuming 47% fewer tokens per task. CEO Arthur Mensch said AI should "be a tool for empowerment, not dominance," while VP of Science Pierre Stock emphasized on-premises sovereign cyber defense ("Access that can’t be cut off by definition because the model is open-weighted").
• OpenAI Model Spec & Ropes & Gray Diligence: OpenAI reorganized its public Model Spec around 5 core values—faithfulness to human intent, harm minimization, honesty and transparency, facilitating human agency, and care—while retiring detailed style rules and referring to its model as "GPT." Separately, law firm Ropes & Gray (340 partners and 1,500 lawyers, led by partners Josh Lichtenstein and Howard Glazer) detailed its proprietary transactional diligence tool built with OpenAI and GPT-6 Astra to inventory data rooms and draft contract diligence reports in hours rather than weeks.

2. AWS Surges 39.3% to $46B Amid Amazon's $220B Capex Push While Reddit Pivots to a Logged-In Experience

In third-quarter financial disclosures reported by KCBS Radio / AP and TechCrunch writer Sarah Perez:

• Amazon & AWS Q3 Earnings: Q3 sales up 12% to $201.94B (net income $20.69B, $1.89/sh); AWS up 39.3% to $46B; $220B 2026 capex (1 AI chip every 14 sec; FCF $42.4B) for the trailing 12 months (compared with $180.17B sales and $21.19B or $1.95/share net income a year ago, FactSet estimates of $1.97/share on $202.2B, and a 400-basis-point / 4% Prime Day calendar shift; Q4 sales guidance is $240B–$247B, up 12%–16% vs. $244.16B expected, while shares dipped 7% after-hours following Alphabet's >$51B quarterly property/equipment spend). CEO Andy Jassy projected 40% annual AWS growth over the next two years toward a $1 trillion-plus business in 5 to 10 years, noting $220B in 2026 capital spending (up 10% from $200B in February and $128B in 2025, plus >$1B over 5 years for data center communities).
• Reddit's Logged-In Transition: Revenue up 53% to $895M ($847M ads, $48M licensing, $283M net income); 130.3M global DAU, 50.7M U.S. DAU (down from 53.2M) as search drops 1M+/wk in October (beating $875M expectations, with net income up 74%, ad revenue up 54%, AI licensing/non-ad revenue up 35%, U.S. ARPU up 53% to $13.82, and global ARPU up 36% to $6.87). Warning that search declines could trim DAU by 10%–12% (to 115M–117M), CEO Steve Huffman announced Q4 international tests of a primarily logged-in experience (with rebuilt incognito mode) to protect data from AI scraping.

3. Thrive Acquires ADT for $15.3B, Rivian Licenses Voice AI to VW, Dimensional Walks Dogpatch Robots & New Consumer AI Tools Launch

Six additional product and deal announcements rounded out Thursday's AI coverage:

• Thrive-ADT, Rivian-VW & Dogpatch Robot Dogs: As reported by TechCrunch writer Julie Bort, TechCrunch transportation editor Kirsten Korosec, and Hoodline writer Tony Ng, Thrive buys ADT ($10/sh, $7.6B equity, $15.3B EV); Rivian-VW $5.8B JV adds voice AI; Dimensional pays $20/hr for 33-lb, $2,000 Unitree dogs; Granola ($1.5B) vs. Wispr ($2B). OpenAI-backed Thrive Holdings (the private equity spinout of Josh Kushner's Thrive Capital, holding over 75 companies) acquired ADT to anchor its smart home security business. Rivian (led by CEO RJ Scaringe, who cut vehicle ECUs from 17 to 7 and rolled out its in-house voice assistant in May 2026 to the R1S and R1T and in October to the R2) licensed elements of its AI voice assistant to Volkswagen Group under their $5.8 billion joint venture (expanded from $5 billion in 2024 through 2027) for debut in VW's ID EVERY1. In San Francisco's Dogpatch, startup Dimensional (founded by Stash Pomichter, building open-source dimOS with >100 robot dogs and 50 humanoids) paid walkers $20/hour for 4 to 6 hour shifts steering 33-pound, $2,000 Unitree robot dogs ("RoboFido") to collect ground-truth navigation data ("Agents are still very bad at controlling hardware, and humans are still needed in the loop").
• Google Gemini File Editing, Meta Style Sketch & Granola Dictation: The Verge writer Stevie Bonifield reported that Google Gemini now supports generating, previewing, and full-screen in-chat editing of PDFs (web and mobile) and Google Docs, Sheets, slide decks, Markdown, TXT, and code (web). TechCrunch reporter Aisha Malik detailed Meta's launch of AI wardrobe and virtual try-on app Style Sketch (spotted by Matt Navarra on Oct. 28, 2026) on iOS and Android in Indonesia, Singapore, and Thailand, following Waddle World, Pocket, and Vibes. And TechCrunch writer Ivan Mehta reported that AI meeting notetaker Granola ($1.5B valuation) launched free unlimited Mac Fn-key voice dictation (with iOS and Windows coming soon) to compete with Wispr ($2B valuation).