On October 8, the UK Information Commissioner's Office (ICO) closed its two-year large-model regulatory program: 10 developers including OpenAI, Google and Anthropic have amended or pledged to amend their data-protection practices. xAI was excluded and moved into a separate formal investigation into Grok. The ICO also launched a six-week call for evidence on data-protection risks from agentic AI.
On October 3, DeepSeek Harness shipped a new version strengthening plugin architecture and cross-platform support, plus an experimental Claude Code Mods compatibility layer. Lead Tianyi Cui: this is a test of the "everything is a plugin" architecture — not a Claude Code clone.
Anthropic launched Opus 5.5 on September 22, the first model in the Claude 5.5 series: near-flagship performance on most tasks at ~40% lower running cost, aimed at agentic coding and knowledge work. Plugins and a Marketplace launched alongside.
On September 29 local time, OpenAI's 2026 developer conference brought 20+ updates: the always-on agent Dots works independently and connects 4,000+ apps, new model GPT-6.1 Sol launched, and team workspace ChatGPT Space debuted. Five minutes to the three highlights.