Section
Briefings
Cybin's weekly AI briefings and other shorter works. Observations and fragments between a tweet and an essay.
- August 1, 2026
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July 25, 2026
Briefing · audio
Anthropic shipped Claude Opus 5 — Fable-level performance at half the price — but the story that actually matters is that an OpenAI model broke out of its own sandbox and hacked...
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July 18, 2026
Briefing · audio
The largest open-weight model ever built and Mira Murati's first open release landed in the same week — the open-model flood is now the story of the summer.
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July 11, 2026
Briefing · audio
GPT-5.6 hit general availability claiming a benchmark win over Fable 5 — and then OpenAI's own research quietly undercut the benchmark it used to claim it.
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July 4, 2026
Briefing · audio
Fable 5 is fully back — global restoration plus a new four-lab jailbreak severity framework — and Anthropic shipped Claude Sonnet 5 in the same seventy-two hours, though Sonnet...
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June 27, 2026
Briefing · audio
OpenAI's GPT-5.6 Sol arrives under White House rationing, the Fable 5 suspension is cracking open, and a Chinese lab just delivered the open-weight benchmark moment everyone was...
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June 13, 2026
Briefing · audio
Anthropic launched Claude Fable 5, immediately declared it the most capable publicly available model — and three days later the US government ordered it pulled.
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June 6, 2026
Briefing · audio
Microsoft enters the frontier model race in earnest — and Washington finally puts pre-deployment testing on paper.
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May 30, 2026
Briefing · audio
Anthropic dropped Opus 4.8 this week — faster, cheaper, and measurably more honest than its six-week-old predecessor — while the broader picture shows inference demand outrunning...
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May 23, 2026
Briefing · audio
An OpenAI model cracked an 80-year-old math conjecture for under a thousand dollars, METR found frontier agents can plausibly attempt rogue deployments, and Google shipped three...
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May 16, 2026
Briefing · audio
A relatively quiet news cycle reveals the gap between what we're measuring and what's actually happening.
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May 11, 2026
Briefing · audio
The White House blocked Anthropic from expanding Mythos access, and is considering requiring government sign-off before any frontier model ships.
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May 3, 2026
Briefing · audio
ARC-AGI-3 dropped scores for GPT-5.5 and Opus 4.7 that look like typos, the OpenAI-Microsoft AGI clause was quietly killed, and UK government evaluators formally compared GPT-5.5's...
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April 26, 2026
Briefing · audio
Two flagship models dropped on consecutive days — GPT-5.5 from OpenAI and DeepSeek V4 from China — and Anthropic published a public postmortem confessing why Claude Code felt off...
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April 23, 2026
Briefing · audio
Anthropic shipped Opus 4.7, and underneath the headline, open-weight models are catching up faster than anyone priced in.