AI Notes

Weekly notes by Ibrahim El Khansa on AI models, tools and news, with a short take on what each one means for building AI products.

Cheaper models, and new limits on agentsWeek of 28 September 2026
GPT-6.1 Sol, Claude Sonnet 5.5 and Gemini 4 Argon change what a good model costs, and agents face a sandbox finding, a Senate bill and budget caps.