Last Week in AI

#207 - GPT 4.1, Gemini 2.5 Flash, Ironwood, Claude Max

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Our 207th episode with a summary and discussion of last week's big AI news!

Recorded on 04/14/2025

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/.

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In this episode:

  • OpenAI introduces GPT-4.1 with optimized coding and instruction-following capabilities, featuring variants like GPT-4.1 Mini and Nano, and a million-token context window.
  • Concerns arise as OpenAI reduces resources for safety testing, sparking internal and external criticisms.
  • XAI's newly launched API for Grok 3 showcases significant capabilities comparable to other leading models.
  • Meta faces allegations of aiding China in AI development for business advantages, with potential compliances and public scrutiny looming.

    • Timestamps + Links:

    • Tools & Apps
      • (00:03:13) OpenAI’s new GPT-4.1 AI models focus on coding
      • (00:08:12) ChatGPT will now remember your old conversations
      • (00:11:16) Google’s newest Gemini AI model focuses on efficiency
      • (00:14:27) Elon Musk’s AI company, xAI, launches an API for Grok 3
      • (00:18:35) Canva is now in the coding and spreadsheet business
      • (00:20:31) Meta’s vanilla Maverick AI model ranks below rivals on a popular chat benchmark
      • Applications & Business
        • (00:25:46) Ironwood: The first Google TPU for the age of inference
        • (00:34:15) Anthropic rolls out a $200-per-month Claude subscription
        • (00:37:17) OpenAI co-founder Ilya Sutskever’s Safe Superintelligence reportedly valued at $32B
        • (00:40:20) Mira Murati’s AI startup gains prominent ex-OpenAI advisers
        • (00:42:52) Hugging Face buys a humanoid robotics startup
        • (00:44:58) Stargate developer Crusoe could spend $3.5 billion on a Texas data center. Most of it will be tax-free.
        • Projects & Open Source
          • (00:48:14) OpenAI Open Sources BrowseComp: A New Benchmark for Measuring the Ability for AI Agents to Browse the Web
          • Research & Advancements
            • (00:56:09) Sample, Don't Search: Rethinking Test-Time Alignment for Language Models
            • (01:03:32) Concise Reasoning via Reinforcement Learning
            • (01:09:37) Going beyond open data – increasing transparency and trust in language models with OLMoTrace
            • (01:15:34) Independent evaluations of Grok-3 and Grok-3 mini on our suite of benchmarks
            • Policy & Safety
              • (01:17:58) OpenAI countersues Elon Musk, calls for enjoinment from ‘further unlawful and unfair action’
              • (01:24:33) OpenAI slashes AI model safety testing time
              • (01:27:55) Ex-OpenAI staffers file amicus brief opposing the company’s for-profit transition
              • (01:32:25) Access to future AI models in OpenAI’s API may require a verified ID
              • (01:34:53) Meta whistleblower claims tech giant built $18 billion business by aiding China in AI race and undermining U.S. national security
                • ...more
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