Last Week in AI #223 - Haiku 4.5, OpenAI DevDay, Claude Skills, Scaling RL, SB 243
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Oct 24, 2025 Eric Schlontz, a researcher at Anthropic and former robotics startup founder, joins the discussion to explore the latest in AI developments. They dive into Anthropic's Haiku 4.5, spotlighting its impressive efficiency. The conversation navigates through OpenAI's innovations announced at DevDay, including new capabilities for ChatGPT. Insights into AI's integration in workplace tools like Microsoft's Copilot and Slackbot emerge, alongside pressing concerns over the regulation of AI for children and the escalating presence of AI-generated content on the internet.
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Compact Models Punch Above Weight
- Anthropic's Haiku 4.5 delivers Sonnet-like performance at much lower cost and latency.
- It targets fast, cheap agentic and tool-using workflows for businesses and developers.
ChatGPT As An Embedded App Platform
- OpenAI's App SDK and AgentKit make ChatGPT a platform that embeds apps and agents into conversations.
- This strengthens ChatGPT's role as the primary consumer interface for many workflows.
Packaged Skills For Real Workflows
- Anthropic 'skills' package instructions, metadata, and resources so Claude agents run bespoke company workflows.
- Skills let teams share templates, binaries, and assets to automate complex internal tasks.