Last Week in AI31 Jul 2025

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

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 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:

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

Applications & Business

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

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