Zvi Mowshowitz

Person. Writer of the blog/Substack "Don't Worry About the Vase" — one of the most-read independent voices on AI. Best known for his exhaustive weekly "AI #N" roundups synthesizing the week's AI capabilities, releases, safety debates, and policy, plus monthly roundups and deep dives on individual model releases and system cards.

Comes from a background in competitive Magic: The Gathering (Pro Tour, Hall of Fame) and trading; rationalist-adjacent and broadly AI-safety-concerned, tracking frontier-lab behavior, governance, and existential-risk arguments while staying close to the practical capabilities of current models.

His posts are a running primary-source commentary on the AI field — useful as an opinionated index into what happened and why it mattered.

entities · 23 notes linked

Related: Anthropic · AI Policy · Openai · Claude · Model Evaluation · AI Safety · Cybersecurity · Us Government

Notes

• AI #171: False Flag — Weekly roundup; OpenAI-linked PAC false-flag scandal
• AI #172: The First Fable — Weekly roundup excluding the Fable model itself
• AI #173: AI Pauses — Weekly AI roundup during the Fable takedown
• AI #174: You're It — Weekly AI roundup, Claude Tag, medical scanners, agent security
• AI #175: The Fable Continues — Weekly AI roundup covering Fable's return aftermath
• American Government Takes Down Claude Fable — Commerce export controls abruptly shut down Fable
• Claude Fable 5 and Mythos 5: Capabilities — Fable 5 capability review, benchmarks, classifiers, reception
• Claude Fable 5 and Mythos 5: The System Card — Reading the Fable/Mythos 319-page system card
• Claude Sonnet 5 Is Not Frontier But Has Its Uses — Sonnet 5 system card review, cheaper faster non-frontier model
• Fable #6: The Return of the King — Anthropic Fable 5 restored after government export-control blip
• Fable and Mythos: Model Welfare — Model welfare assessment of Fable 5 / Mythos 5
• GLM-5.2 Is The New Best Open Model — GLM-5.2 open model capabilities review, benchmarks
• GPT-5.6: The System Card — Review of OpenAI GPT-5.6 Sol/Terra/Luna system card
• Monthly Roundup #43: June 2026 — Grab-bag of non-AI culture, economics, advice
• OpenAI Offers A New Policy Blueprint — OpenAI's federal frontier-AI safety framework blueprint
• The Once And Future Fable #2 — Reconstructing the 24 hours of the Fable takedown
• The Once And Future Fable #3: Fix This Code — Debunking the Fable "jailbreak," export-control fallout
• The Once And Future Fable #4 — Fable takedown aftermath, cyber-defense, restoration odds
• The Once And Future Fable #5 — AI-policy roundup on ad hoc licensing regime and open weights
• Three Labs With a Plan and A Memorandum — Trump AI memorandum plus OpenAI's benefit-everyone plan
• Trump Signs Executive Order For AI Testing Prior To Frontier Model Releases — Trump EO mandating pre-release frontier cyber testing
• WSJ Article Claiming China Has Matched Anthropic Is Obvious Nonsense — Debunking WSJ headline that China matched Mythos on cyber
• White House Will Ad Hoc Decide Who Can Individually Access GPT-5.6 — Critique of ad hoc White House frontier-model access regime