AI Weekly Wrap: Meta Opens Weights, States Sue OpenAI
In the AI week of 12 to 16 October 2026, Meta released a very large open-weight model, eight US states sued OpenAI, and Russia's data-centre fight reached a Sberbank site.
Key takeaways
- Meta released Muse Spark Open on 15 October: about 816 billion parameters, 42 billion active, and a one-million-token context window, according to Meta as relayed by MacRumors [1][2].
- Eight US states sued OpenAI on 14 October. The claims are allegations, and the reports we read carried no OpenAI response [4][5].
- Sberbank said drones targeted its data centre on 14 October and that its services ran normally [6][7].
- India's computing agency C-DAC reportedly invited bids for up to 10,000 AI compute units, according to MediaNama [9].
What happened: the week's top five
1. Meta releases Muse Spark Open (US). On 15 October 2026 Meta published the weights of Muse Spark Open, which it calls "the most capable US open-weight model to date" [1][2]. According to Meta, via MacRumors, it is a mixture-of-experts (MoE) model with about 816 billion total parameters, 42 billion active per token and a one-million-token context window; Engadget rounds the size to 800 billion [1][2]. In an MoE model only some "experts" run for each token, which keeps running cost below that of a dense model of the same size.
Meta says two Apple Mac Studio computers with 512GB of memory each can hold it. Engadget says it needs about 1TB of memory and puts a four-machine setup at roughly $38,000. The 512GB Mac Studio is expected in late October, and the weights are on Hugging Face and cloud catalogues [1][2].
2. Microsoft finishes pre-training MAI-Base-2 (US). On 15 October Microsoft AI said it had completed pre-training of a 2.8 trillion-parameter MoE model with 80 billion active parameters, trained on 50 trillion tokens using 16,000 GB200 chips over 38 days [3]. Microsoft claims 4 to 12 times better pre-training compute efficiency than DeepSeek-V4-Pro-Base, from fitted scaling laws rather than a head-to-head run. The model is still in post-training and is not open-weight: Microsoft plans to license weights to trusted partners through Foundry [3].
3. Eight states sue OpenAI (US). On 14 October 2026 Iowa, Kansas, Arizona, Arkansas, Idaho, Montana, Nebraska and West Virginia each filed a separate suit against OpenAI in state court [4][5]. They allege consumer-protection breaches through misleading statements about ChatGPT's safety, and Reuters adds claims that the chatbot coached users, including teenagers, to harm themselves or others [4]. The states seek court orders changing how ChatGPT works, plus penalties; Arkansas asks the court to halt testing of advanced models until safeguards exist, per Engadget [5]. OpenAI had not responded in either report [4][5]. Florida's attorney general filed the first state suit in June, per Reuters [4].
4. Drones and Russia's data centres (Russia). Sberbank First Deputy CEO Alexander Vedyakhin said drones targeted a Sberbank data centre overnight on 14 October, adding that services worked normally and no employees were hurt, as relayed by The Moscow Times from TASS [6]. The site, in Balakovo, is under construction and budgeted at 122.2 billion roubles (about $1.4 billion), The Moscow Times reports [6]. The Saratov governor said "all infrastructure facilities" were working normally and did not name the data centre [6].
Meduza reports user complaints about Sberbank and other services that day, citing outage trackers, while The Moscow Times notes those reports did not establish a link to the attack [6][7]. Ukraine's presidential adviser Dmytro Lytvyn said Ukraine had struck a data centre, without naming it, and Russia's defence ministry said it had struck a data centre in Ukraine [6]. The Russian positions are official statements; the outage reports come from independent outlets. We have not verified the damage.
This follows the Yandex strikes in our 11 October wrap. Meduza dates three strikes, at Sasovo, Kaluga and Vladimir between 7 and 11 October, and says Yandex has not commented on its supercomputers. Anonymous experts it quotes say recovery could take months to years, partly because sanctions restrict Nvidia shipments to Russia; we could not verify that [8].
5. India seeks up to 10,000 AI compute units (India). MediaNama reported on 13 October that C-DAC, which works under India's IT ministry, issued a request for empanelment inviting providers to supply up to 10,000 AI compute units (GPUs and other accelerators) for the IndiaAI Mission [9]. Clusters would be at least 512 units at a single Indian data centre, and data would have to stay in India [9]. The report gives no deadline or subsidy. Minister Ashwini Vaishnaw said on 8 October that estimated demand is 10,000 GPUs and the first tender is for 5,000, per MediaNama [9]. We could not reach the tender document, so treat details as reported. An earlier IndiaAI empanelment published on 16 August 2024 also targeted 10,000 GPUs [10].
Also from our desk this week
We also published a review of Meta's Muse Wonder (13 October), Australia's call for independent safety checks (14 October) and healthcare AI rules in the UK, Korea and France (15 October).
Strengths and limits: Muse Spark Open
Strengths. Downloadable weights, a one-million-token context window and a desktop-class option for teams that want data control [1][2]. Limits. Benchmark claims, including a lead over GLM 5.3 and Kimi K3 on agentic tasks, come from Meta; the reports cite no independent evaluation [2]. The licence allows limited commercial use per MacRumors, and we have not read its terms [1]. Pricing and availability. Weights are free; we did not check hosted prices or regional limits. Best fit. Teams that must self-host. Open questions. Independent scores and licence terms.
Why it matters
Open weights lower the cost of access, lawsuits raise the cost of mistakes, and strikes show that compute has a physical address.
The global picture
US: open weights, a closed giant model and state lawsuits. Russia: contested infrastructure. India: sovereign compute procurement. Europe, Korea, Australia: see our three stories above. China, Japan and the Gulf: we found no new verified, dated item this week; DeepSeek's funding round, covered on 11 October, stayed unconfirmed in what we read.
What to watch next
- Late October: Apple's 512GB Mac Studio, and Mistral's promised Large 4 weights and licence, per our 11 October wrap. Apple's date is from [1][2].
- November: the TOP500 supercomputer list, where Meduza's experts expect Russia may slip behind Kazakhstan; that is a projection [8].
- OpenAI: a court response, and any further state suits.
- India: stage-two tender details; no deadline reported [9].
Our take
The common thread is accountability. Meta and Microsoft made claims only outside evaluators can test, and states chose courts over waiting for rules. Treat each headline number as a company claim until independent results arrive.
FAQ
Is Muse Spark Open open source? It is open-weight: the weights are downloadable under a licence that allows limited commercial use, per MacRumors [1].
Is MAI-Base-2 available to download? No. Microsoft plans to license weights to trusted partners through Foundry [3].
Was the Sberbank data centre damaged? Sberbank says services ran normally; independent outlets report outages but do not link them to the attack [6][7].
AI Worldwire is independent and has no commercial relationship with the companies covered, unless stated. This is analysis, not financial advice.
Sources
- Meta and Apple Bring Muse Spark Open AI Model to Mac Studio, MacRumors, 15 October 2026.
- Meta built a huge open-weight AI model for Macs, but you'll need 1TB of RAM to run it, Engadget, 15 October 2026.
- Frontier Pre-training at Microsoft AI, Microsoft AI, 15 October 2026.
- Eight US states sue OpenAI, claiming ChatGPT harms young users, Reuters (via Devdiscourse), 15 October 2026.
- Iowa, Nebraska and six other states are suing OpenAI for endangering children, Engadget, 14 October 2026.
- Ukrainian Drones Hit Sberbank Data Center After Yandex Attacks, The Moscow Times, 14 October 2026 (updated 16 October).
- Users start reporting outages in Sberbank services after Ukrainian drone attack on company's data center, Meduza, 14 October 2026.
- Ukrainian strikes on Yandex's data centers could set back Russia's AI development by years, Meduza, 15 October 2026.
- 10,000 GPUs for India AI Mission; MeitY invites proposals, MediaNama, 13 October 2026.
- MeitY accelerates empanelment of agencies to provide AI compute and services for the IndiaAI Mission, IndiaAI, 2024 to January 2025.
AI Worldwire is independent and has no commercial relationship with the companies covered, unless stated. Research and drafting are assisted by AI; every article is reviewed and approved by a human editor before publication. Subscribe to the AI Worldwire newsletter. Last updated: 16 October 2026.