The weekend delivered one of those rare stretches where the news reads like science fiction: an AI completed the formal verification of a 358-year-old math problem, Europe put a privately built rocket into orbit for the first time from its own soil, and the man who invented ride-hailing came back to disrupt it with robots. Underneath the spectacle, new data shows just how fragile the AI boom's revenue base really is.
Claude formalizes Fermat's Last Theorem in 11 days
- Anthropic's Claude produced a complete formal verification in Lean of Fermat's Last Theorem — unsolved for 358 years until Andrew Wiles's 1995 proof — generating 30,000+ supporting theorems and about 13 million lines of code in 11 days of mostly autonomous work.
- Mathematician Kevin Buzzard of Imperial College London, who leads the human formalization effort, confirmed the proof's validity; Forbes reports the run consumed roughly 6 billion output tokens.
Why it mattersIf AI can verify the hardest proofs in mathematics, it can verify software, contracts and engineering designs — a leap in trust for machine-generated work.
OpenAI ships GPT-6 Astra to paying users
- GPT-6 Astra is now live for all Pro, Enterprise and Business Premium users in ChatGPT Work and Codex, plus the OpenAI API, Microsoft Azure and AWS Bedrock; Plus and Business tiers follow in the coming days.
- The model is expensive to run: message quotas are half those of GPT-5.6 Sol (5–45 messages per five hours versus 10–100).
Why it mattersThe frontier keeps moving, but the halved quotas show compute — not capability — is now the bottleneck of the AI race.
Europe reaches orbit from its own soil for the first time
- German startup Isar Aerospace's 28-meter Spectrum rocket reached orbit on September 5 from Andøya, Norway — the first orbital launch from Western European soil and the first by a European commercial launcher — deploying five satellites on only its second flight, 17 months after its debut crashed.
- Spectrum carries up to 1,000 kg to low Earth orbit; Isar has raised €270 million in 2026, holds an ESA contract worth about €200 million, and defense clients make up 60% of its order book.
Why it mattersEurope finally has an answer to SpaceX's monopoly on Western launch — competition that should push satellite costs down for everyone.
Kalanick is back: Atoms raises $1.7B and goes after robotaxis
- Travis Kalanick's startup Atoms (formerly City Storage Systems, founded in March 2026) is building robotaxi technology after raising $1.7 billion in a round led by Andreessen Horowitz — with Uber itself investing $100 million.
- Atoms acquired Pronto, the autonomous-driving startup led by Anthony Levandowski, the engineer at the center of the original Uber–Waymo self-driving lawsuit.
Why it mattersThe man who built Uber is now betting the driver was always temporary — and Uber is hedging by funding its own potential disruptor.
1% of customers pay for 80% of the AI boom
- Ramp corporate-card data shows the top 1% of enterprise customers generate about 80% of enterprise revenue at both OpenAI and Anthropic — a concentration unseen in other software categories.
- Just two coding tools, Cursor and GitHub Copilot, drove roughly $1.2 billion of Anthropic's $5 billion in revenue.
Why it mattersThe AI boom's revenue rests on a handful of coding tools — if that layer stumbles, the shock travels straight up to the model labs.
The big picture
The same weekend AI conquered one of mathematics' greatest summits, the data showed its business model balancing on a needle: 1% of customers funding 80% of the revenue. Meanwhile the physical layer of tech — rockets, robotaxis — is being rebuilt by startups moving faster than the incumbents. Capability is no longer the question; distribution and durability are.
Sources & further reading
- Anthropic — Formalizing Fermat's Last Theorem
- Forbes — Claude formalized Fermat's Last Theorem in 11 days
- OpenAI — GPT-6 Astra
- CNBC — OpenAI announces rollout of GPT-6 Astra
- Space.com — Isar Aerospace reaches orbit from Norway
- ESA — Spectrum's qualifying second launch
- TechCrunch — Kalanick's Atoms raises $1.7B led by a16z
- PYMNTS — OpenAI and Anthropic get 80% of revenue from 1% of customers