#244 - GPT-5.5 Instant, Grok 4.3, OpenAI vs Musk

#244 - GPT-5.5 Instant, Grok 4.3, OpenAI vs Musk

From Last Week in AI by Skynet Today

May 11, 2026 · 1h 55m · Episode 284

About this episode

The episode discusses major AI news including the release of OpenAI's GPT-5.5 Instant and various industry developments.

Our 244th episode with a summary and discussion of last week's big AI news! Recorded on 05/08/2026 Hosted by Andrey Kurenkov and Jeremie Harris Feel free to email us your questions and feedback at andreyvkurenkov@gmail.com and/or  hello@gladstone.ai Read out our text newsletter and comment on the podcast at https://lastweekin.ai/ In this episode: OpenAI released GPT-5.5 Instant as ChatGPT’s new default model, showing large benchmark gains and crossing a “high” cyber-risk threshold under its preparedness framework, while bio-safety results were mixed. OpenAI investigated and patched ChatGPT’s “goblin” obsession, attributing it to reinforcement-learning rewards that over-amplified playful creature metaphors in a nerdy persona that later bled across versions. Major industry moves included xAI’s Grok 4.3 price cuts and voice tools, Mistral’s unified Medium 3.5 model and Work mode, and Anthropic’s managed-agent upgrades alongside a surprise SpaceX compute deal and reports of a much higher Anthropic valuation. Key policy and security developments covered the Musk–OpenAI trial details, Pentagon AI deployments on classified networks, expanded U.S. government pre-release model…

People in this episode

Hosts: Andrey Kurenkov, Jeremie Harris

Topics covered

  • AI news
  • OpenAI updates
  • Grok 4.3
  • Mistral developments
  • policy and security
  • Pentagon AI deployments

Keywords

  • GPT-5.5 Instant
  • OpenAI
  • Grok 4.3
  • Mistral
  • Anthropic
  • AI policy
  • Musk trial
  • Pentagon AI

Mentioned in this episode

Organizations: OpenAI, xAI, Mistral, Anthropic, SpaceX, NSA

Products: GPT-5.5 Instant, Grok 4.3, Medium 3.5, Mythos

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