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Nikoloz Turazashvili (@axrisi)
Nikoloz Turazashvili (@axrisi) Subscriber

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Mistral AI raises €3B led by Samsung: how sovereign is it?

#ai #mistral #cloudflare #vmware

Mistral AI announced a €3 billion Series D on September 8, 2026, at a post-money valuation of more than €21 billion, to build "sovereign, open-weight AI" for Europe. The round was led by Samsung Electronics, which is headquartered in Suwon, South Korea. If you pick an LLM provider for data-residency reasons, or you are deciding whether open weights from a European lab are worth their price, this round changes what Mistral can build and who it answers to.

TL;DR

  • €3B Series D, post-money above €21B. Mistral calls it "the largest equity fundraising round ever completed by a European technology company" (Mistral).
  • Lead: Samsung Electronics. Co-leads EQT's Scaleup Europe Fund and PSG Equity; returning investors include a16z, ASML, Nvidia and Salesforce Ventures.
  • CEO Arthur Mensch told CNBC Mistral is on track to pass $1 billion in annual recurring revenue before year end.
  • Mistral Medium 3.5 (128B, open weights) costs $1.50 in and $7.50 out per million tokens; Artificial Analysis puts the median for comparable open models at $0.14 and $0.40.
  • The same morning, CipherCue measured that 89.6 % of European companies with a CDN sit behind Cloudflare. Sovereignty has a long way to go below the model layer.

Who invested in Mistral AI's €3B round?

The cap table is the story. From Mistral's announcement:

Role Investors
Lead Samsung Electronics
Co-leads Scaleup Europe Fund (EQT), PSG Equity
New Advent, BlackRock (funds and accounts), the Grand Duchy of Luxembourg
Returning (selection) a16z, ASML, BNP Paribas CIB, Bpifrance, General Catalyst, Index Ventures, Lightspeed, Nvidia, Salesforce Ventures

There is European money in there: ASML, Bpifrance, BNP Paribas, EQT, and a sovereign state, Luxembourg. There is also Korea, Sand Hill Road, BlackRock and the company that sells Mistral its GPUs. That is not a scandal; a €3B round needs large cheques and there are not many European funds that write them. It does mean "sovereign" describes where the models run and who controls the weights, not who owns the company.

Mistral AI valuation: from seed to €21 billion

Mistral launched three years ago. The funding path, per OfficeChai and Mistral's Series C post:

Date Round Valuation
June 2023 €105M seed –
June 2024 Series B €5.8B
September 2025 €1.7B Series C, led by ASML €11.7B
September 2026 €3B Series D, led by Samsung more than €21B

The valuation roughly doubles every twelve months. Total raised is above $6 billion.

What does €21 billion buy? Mistral says it works in 20 countries with more than 125 enterprise customers, including Airbus, ASML and HSBC. Mensch told CNBC that revenue will pass $1 billion ARR this year (Quartz via Yahoo Finance). On Hacker News one commenter put Mistral's revenue at 700 million and wrote that it "is what Anthropic generates in 3 days". That is the commenter's figure, not a disclosed one, but the scale gap it points at is real.

What is sovereign AI, and what Mistral is spending on

"Sovereign AI" in Mistral's pitch means a European company that trains its own models, publishes open weights, and runs inference on compute it owns in Europe, so a bank or a ministry can keep data under European law. Mistral describes itself as "the only AI company in the world building the full stack".

The money goes into that stack, per the Yahoo Finance report:

  • an $830 million debt raise earlier in 2026 for a data center at Bruyères-le-Châtel, outside Paris, with 13,800 Nvidia GB300 GPUs;
  • a second site in Sweden, about €1.2 billion;
  • a target of 200 MW of European capacity by the end of 2027, "toward a gigawatt by the end of the decade".

Mensch also said "the amount of compute that we own is going to grow around 100% in the next five years".

Two details complicate the word "sovereign". Microsoft will use capacity from Mistral's European data centers, and Mistral models ship in Microsoft Foundry and Copilot Studio. The independent European cloud has an American tenant from day one. And on August 24, Mistral announced a strategic collaboration with HUMAIN, "in the hundreds of millions of Euros", for sovereign AI in Saudi Arabia, where "Mistral will explore using HUMAIN's data center infrastructure". Sovereign, in practice, is a product: your data stays under your government's control, on hardware in your jurisdiction, whichever that is.

Mistral Medium 3.5: price and benchmarks

For developers, the product that matters is the model. Artificial Analysis lists Mistral Medium 3.5 as a 128-billion-parameter dense model with open weights under a Modified MIT license, a 256k context window and about 149 output tokens per second. It scores 15 on their Intelligence Index, well above the median of 8 for comparable models. Their summary also says it is "particularly expensive when comparing to other open weight models of similar size".

Artificial Analysis page for Mistral Medium 3.5: Intelligence Index 15, 149 tokens per second, $1.50 in / $7.50 out per 1M tokens,

What that means for a bill, as illustrative arithmetic (list prices, no caching):

Workload: 10M input + 2M output tokens Input Output Total
Mistral Medium 3.5 ($1.50 / $7.50) $15.00 $15.00 $30.00
Median comparable open model ($0.14 / $0.40) $1.40 $0.80 $2.20

Running the whole Intelligence Index on Medium 3.5 cost Artificial Analysis $1,159.93.

Dev Twitter was less polite. Theo wrote: "It's also been 3 years since they had a model worth looking at for any reason at all". Youssof Al Toukhi quote-tweeted a chart he says is Terminal-Bench, with Medium 3.5 at 0 %, behind a 27B Qwen:

Youssof Al Toukhi on X:

The defence on Hacker News came from davedx: "People dump on them because they're not benchmaxxxing which is pretty shortsighted". Mistral's customers are banks and governments that cannot legally send data to a US region, and for them a European model is a compliance answer, not a leaderboard entry. Another commenter, nik736, reported the opposite from their own workloads: "In our business benchmarks their Mistral Medium 3.5 with reasoning is worse than Gemma 4 31B and Glimmer 30B."

What I'd take from this as a developer: if data residency is your hard requirement, Mistral is one of the few serious options and the open weights let you self-host. If it is not, run your own eval before paying ten times the median price for a model a smaller open one may match.

Europe's other sovereignty number: 9 in 10 behind Cloudflare

The number nobody put in a press release came out the same morning. CipherCue checked 44,143 European companies with a detected CDN, across Germany, the UK, the Netherlands, Poland, France, Italy, Spain and Ireland. 39,547 of them, 89.6 %, are behind Cloudflare, a company in San Francisco.

Country Share behind Cloudflare
Netherlands 95.6 %
UK 93.2 %
Poland 92.6 %
France 86.2 %
Germany 81.4 %
Spain 78.8 %

The runners-up are far behind: Amazon CloudFront with 3,112 companies, Fastly 1,299, Akamai 396. CipherCue also lists three global Cloudflare outages in fifteen months, none of them attacks: November 18, 2025 (a Bot Management feature file doubled in size), December 5, 2025 (a config change during mitigation of the React Server Components vulnerability) and February 20, 2026 (6 hours 7 minutes, after cleanup automation withdrew 25 % of BYOIP prefixes via BGP). Europe can fund a sovereign model and still have one landlord for its front door. (HN)

Also today: Broadcom pulls VMware VDDK, and a 1999 RSA root falls

Broadcom removed the VDDK downloads. The VMware Virtual Disk Development Kit is the library that Azure Migrate, Red Hat's Migration Toolkit for Virtualization, Nutanix Move and virt-v2v use to copy VMs off VMware. ShapeBlue documented the removal on August 25; a Red Hat knowledge-base article from August 27 tells customers to contact Broadcom support; Broadcom Customer Care told one customer the VDDK is "no longer available for use or download" (Virtualization Howto). The same week Broadcom brought back the cheaper VMware Standard edition. If you are planning a migration, Proxmox's built-in importer does not need the VDDK. The top HN comment, in full: "Is a magnet torrent available?"

A certificate authority from 1999, factored on a desktop. Netscape 4.51 shipped two 512-bit roots from E-Certify, a Canadian CA. Matthew McPherrin factored them with CADO-NFS on a Ryzen 9 5950X, in 32 and 29 hours (code). The roots expired in 2003, so nothing current is at risk; it is a clean measurement of how cheap 512-bit RSA is now. (HN)

Verdict: NEEDS REVIEW

I stamped it NEEDS REVIEW. The money is real, the customers are real and the data centers are being built. The sovereignty is a Samsung-led press release with Microsoft as a tenant, and the flagship model is priced like a frontier lab while the public benchmarks treat it like a hobby project. Review again when Mistral ships a model that wins on something other than jurisdiction.

FAQ

Who led Mistral AI's €3 billion funding round?
Samsung Electronics, with EQT's Scaleup Europe Fund and PSG Equity as co-leads.

What is Mistral AI's valuation?
More than €21 billion post-money after the September 2026 Series D, up from €11.7 billion a year earlier.

Is Mistral Medium 3.5 open source?
It has open weights under a Modified MIT license, per Artificial Analysis. It is a 128B dense model, so self-hosting needs serious GPUs.

What does sovereign AI mean?
In Mistral's usage: models, weights and inference compute controlled in Europe, so customers can keep data under European jurisdiction. It does not mean European ownership of the company.

Sources

This article expands on an episode of **The Daily Diff, a five-minute daily video on what shipped and what broke in tech.
Watch the episode · Subscribe on YouTube · the written diff lands in your inbox every morning at thedailydiff.dev.

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