Daily briefing index

Tuesday, September 22, 2026

Morning and afternoon are separate, focused editions. Choose one to read or share directly.

Morning brief

Xiaomi enters the frontier-model contest with MiMo v2.6 · World-model knowledge can be distilled into fast robot policies

Open this edition End of day

OpenAI splits GPT-6 into capability and cost lanes · Anthropic answers with a cheaper Claude Opus 5.5