Last Week in AI9 Apr 2025

#206 - Llama 4, Nova Act, xAI buys X, PaperBench

Our 206th episode with a summary and discussion of last week's big AI news!
Recorded on 04/07/2025

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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

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In this episode:

Meta releases LlAMA-4, a series of advanced large language models, sparking debate on performance and release timing, with models featuring up to 2 trillion parameters for different configurations and applications.
Amazon's AGI Lab debuts NOVA Act, an AI agent for web browser control, boasting competitive benchmarking against OpenAI's and Anthropic's best agents.
OpenAI's image generation capabilities and ongoing financing developments, notably a $40 billion funding round led by SoftBank, highlight significant advancements and strategic shifts in the tech giant’s operations.

Timestamps + Links:

(00:00:00) Intro / Banter

Tools & Apps

(00:01:46) Meta releases Llama 4, a new crop of flagship AI models
(00:13:55) Amazon unveils Nova Act, an AI agent that can control a web browser
(00:17:06) Alibaba Preparing for Flagship AI Model Release as Soon as April
(00:17:59) Runway releases an impressive new video-generating AI model
(00:19:10) Adobe launches Premiere Pro’s generative AI video extender
(00:20:54) OpenAI prepares reasoning slider and memory update for ChatGPT users

Applications & Business

Research & Advancements

(00:38:03) PaperBench: Evaluating AI's Ability to Replicate AI Research
(00:43:50) Crossing the Reward Bridge: Expanding RL with Verifiable Rewards Across Diverse Domains
(00:48:39) Inference-Time Scaling for Complex Tasks: Where We Stand and What Lies Ahead
(00:54:34) Overtrained Language Models Are Harder to Fine-Tune

Policy & Safety

(00:58:28) Taking a responsible path to AGI
(01:02:32) This A.I. Forecast Predicts Storms Ahead
(01:06:24) The Secrets and Misdirection Behind Sam Altman’s Firing From OpenAI

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