#216 - Grok 4, Project Rainier, Kimi K2
Last Week in AI14 Heinä

#216 - Grok 4, Project Rainier, Kimi K2

Our 216th episode with a summary and discussion of last week's big AI news!
Recorded on 07/11/2025

Hosted by Andrey Kurenkov and Jeremie Harris.
Feel free to email us your questions and feedback at contact@lastweekinai.com and/or hello@gladstone.ai

Read out our text newsletter and comment on the podcast at https://lastweekin.ai/.

In this episode:

  • xAI launches Grok 4 with breakthrough performance across benchmarks, becoming the first true frontier model outside established labs, alongside a $300/month subscription tier
  • Grok's alignment challenges emerge with antisemitic responses, highlighting the difficulty of steering models toward "truth-seeking" without harmful biases
  • Perplexity and OpenAI launch AI-powered browsers to compete with Google Chrome, signaling a major shift in how users interact with AI systems
  • Meta study reveals AI tools actually slow down experienced developers by 20% on complex tasks, contradicting expectations and anecdotal reports of productivity gains

Timestamps + Links:

  • (00:00:10) Intro / Banter
  • (00:01:02) News Preview

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Applications & Business

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Research & Advancements

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