This Week in Startups (Jason Calacanis)

This Week in Startups (Jason Calacanis)

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Clips from the Lex Fridman podcast. Visit the main channel for full conversations and other videos.

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The "secret sauce" of recent AI breakthroughs: Post-training with RLVR (and RLHF) | Lex Fridman
21:15
This Week in Startups (Jason Calacanis) This Week in Startups (Jason Calacanis)

The "secret sauce" of recent AI breakthroughs: Post-training with RLVR (and RLHF) | Lex Fridman

Recent AI breakthroughs in reasoning models stem from Reinforcement Learning with Verifiable Rewards (RLVR), which trains models by rewarding accurate solutions to objectively checkable problems like math and coding, enabling scalable performance gains through iterative trial-and-error rather than human preference optimization.

about 2 months ago · 10 points
Timeline to AGI: When will superhuman AI be created? | Lex Fridman Podcast
22:08
This Week in Startups (Jason Calacanis) This Week in Startups (Jason Calacanis)

Timeline to AGI: When will superhuman AI be created? | Lex Fridman Podcast

The conversation contrasts the "AI 2027" report's milestone-based path to AGI (superhuman coder → researcher → ASI by 2031) with the "jagged capabilities" view, concluding that while AI will automate significant software development tasks within months, fully autonomous research and general computer use remain distant due to specification challenges and uneven capability profiles.

about 2 months ago · 9 points
Advice for beginners in AI: How to learn and what to build | Lex Fridman Podcast
30:57
This Week in Startups (Jason Calacanis) This Week in Startups (Jason Calacanis)

Advice for beginners in AI: How to learn and what to build | Lex Fridman Podcast

Aspiring AI researchers should build small language models from scratch to master fundamentals, then specialize deeply in narrow areas like RLHF or character training, while carefully weighing the trade-offs between academia's intellectual freedom and frontier labs' high compensation but intense 996 work culture.

about 2 months ago · 10 points