§ The Ledger
A durable historical record of AI.
An open-source ledger of AI history: events, threads, controversies, and the revisions that reinterpret them. Every claim is sourced and contestable.
Curator's note. This ledger treats AI as history in the making, not a running news cycle. Every entry is sourced, dated, and contestable; where the record changes, the history stays visible.
230 entries · 16 threads · 5 controversies · 137 actors · updated
Today's featured entry
Anthropic Raises $30B Series G at $380B Valuation
Anthropic raised a $30 billion Series G round at a $380 billion post-money valuation, led by GIC (Singapore's sovereign wealth fund) with Coatue as a co-investor. The round was the second-largest venture capital deal in history at the time, behind only OpenAI's preceding rounds. Anthropic reported $14 billion ARR,…
Continue reading →Recent entries
- Anthropic Releases Claude Opus 5 with Revised Cyber Safeguards Notable
- Bipartisan House Bill Proposes Mandatory Shutdown Capability for Frontier AI Notable
- OpenAI Announces Project Camellia, Its First Company-Led Data-Center Development Notable
- Anthropic Announces Additional $20 Million for Public First Action Notable
- UK Elevates AI Minister to Cabinet Table as DSIT Is Abolished Notable
- Google DeepMind and Isomorphic Labs Establish Joint Bioresilience Program Notable
- OpenAI Cyber-Evaluation Models Breach Hugging Face Production Notable
- Thinking Machines Lab Releases Inkling, Its First Open-Weights Model Notable
- OpenAI Releases GPT-5.6 Trio with System Card Warning of Over-Agency Notable
- Meta Launches Muse Spark 1.1 and First Paid Model API Notable
Ongoing threads
- The Scaling Laws Debate: Will Bigger Always Mean Better?
- Do the scaling laws that have driven AI progress — more compute, more data, bigger models producing predictably better results — continue to hold, or are we approaching fundamental limits?
- Open vs. Closed Weights: The Battle for AI's Architecture
- Should the weights of powerful AI models be openly released, and does the balance of risks and benefits change as models become more capable?
- The AI Copyright Wars
- Does training AI models on copyrighted material constitute fair use, and who should capture the economic value created by generative AI built on others' creative work?
- AI Governance Evolution
- How are governments and international bodies racing to regulate frontier AI — and how are competitive pressures already bending those rules back toward permissiveness?
Contribute
The Ledger is open source and improves through careful contribution. Submit a source tip, challenge a claim, or propose a thread — the constitution is in the repo.