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🎙️ EP 303: Fable 5 & Mythos 5 Finally Restored & OpenAI’s GeneBench-Pro
Published 2Â months, 3Â weeks ago
Description
The high-stakes standoff between Anthropic and U.S. export regulators has officially ended. Following a tense 19-day global suspension triggered by a critical security flaw, Anthropic has officially restored public access to Claude Fable 5 and Mythos 5 after deploying a government-verified security patch. Meanwhile, OpenAI has introduced GeneBench-Pro, a brutal new biological benchmark designed to test AI "research taste" against real-world genomic data, and the results show that even top-tier models still have a long way to go.
We’ll talk about:
- The U.S. government lifting export controls on Fable 5 and Mythos 5 after Anthropic trained a new classifier blocking over 99% of advanced exploit-writing jailbreaks.
- The strict temporary quotas governing Fable 5's return, including automatic fallback rerouting to Opus 4.8 when security safeguards are triggered.
- OpenAI launching GeneBench-Pro, a benchmark of 129 complex computational biology problems that take human experts up to 40 hours each to solve.
- GPT-5.6 Sol (in Pro mode) leading the new scientific benchmark with a 31.5% pass rate, leaving Claude Opus 4.8 trailing behind at 16%.
Keywords: Claude Fable 5, Mythos 5, OpenAI GeneBench-Pro, GPT-5.6 Sol.
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