OpenAI launches GPT-6, Claude Opus 5.5 arrives & more

Tech & AI Brief · Sep 23, 2026 · 5m

OpenAI has unveiled its dual GPT-6 Sol and Luna distilled reasoning models, while Anthropic strikes back with the release of Claude Opus 5.5. Meanwhile, Snorkel AI secured 350 million dollars in Series E funding, and Xiaomi open-sourced its trillion-parameter model family. Full edition: https://tech.pibrief.com/editions/2026-09-23