Last Week in AI

#218 - Github Spark, MegaScience, US AI Action Plan

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Our 218th episode with a summary and discussion of last week's big AI news!

Recorded on 07/25/2025

Hosted by Andrey Kurenkov and Jeremie Harris.

Feel free to email us your questions and feedback at [email protected] and/or [email protected]

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

In this episode:

  • GitHub introduces Vibe Coding with Spark, engaging users with natural language and visual controls to develop full-stack applications.
  • AI coding tools from Gemin, CLI and RepleIt face significant issues, inadvertently deleting user data and highlighting the importance of careful management.
  • US release never Award Americans, AI Action Plan outlining economic, technical, and policy strategies to maintain leadership in AI technology.
  • Newly released Mega Science and SWE-Perf data sets evaluate AI reasoning and performance capabilities in diverse scientific and software engineering tasks.

    • Timestamps + Links:

    • (00:00:10) Intro / Banter
    • (00:01:31) News Preview
    • Tools & Apps
        • (00:03:53) GitHub Introduces Vibe Coding with Spark: Revolutionizing Intelligent App Development in a Flash - MarkTechPost
        • (00:07:05) Figma’s AI app building tool is now available for everyone | The Verge
        • (00:10:18) Two major AI coding tools wiped out user data after making cascading mistakes - Ars Technica
        • (00:14:10) Google's AI Overviews have 2B monthly users, AI Mode 100M in the US and India | TechCrunch
        • Applications & Business
            • (00:18:10) Leaked Memo: Anthropic CEO Says the Company Will Pursue Gulf State Investments After All
            • (00:24:39) Mira Murati says her startup Thinking Machines will release new product in ‘months’ with ‘significant open source component’
            • (00:27:07) Waymo responds to Tesla’s dick joke with a bigger Austin robotaxi map | The Verge
            • Projects & Open Source
                • (00:32:05) MegaScience: Pushing the Frontiers of Post-Training Datasets for Science Reasoning
                • (00:43:09) TikTok Researchers Introduce SWE-Perf: The First Benchmark for Repository-Level Code Performance Optimization - MarkTechPost
                • Research & Advancements
                    • (00:47:17) Subliminal Learning: Language models transmit behavioral traits via hidden signals in data
                    • (00:55:34) Inverse Scaling in Test-Time Compute
                    • (01:02:34) Scaling Laws for Optimal Data Mixtures
                    • Policy & Safety
                        • (01:07:35) White House Unveils America’s AI Action Plan
                        • (01:16:55) Chain of Thought Monitorability: A New and Fragile Opportunity for AI Safety
                        • (01:20:20) Self-preservation or Instruction Ambiguity? Examining the Causes of Shutdown Resistance
                        • (01:24:00) People Are Being Involuntarily Committed, Jailed After Spiraling Into "ChatGPT Psychosis"
                        • (01:28:03) Meta refuses to sign EU’s AI code of practice
                          • ...more
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