Provider docs shed model and pricing guidance as Perplexity widened agent surfaces.

The pattern is public routing and price text getting less stable across OpenAI, Anthropic, and Google, while Perplexity added more entry points, subagents, automations, model access, and API tools. The operator move is to mark cached model names, workload guidance, and pricing as stale, then route from fresh checks and monitored diffs before build or buy decisions.

• Aug 25, 2026OpenAI models page removed visible model selection documentation text.
• Aug 25, 2026Anthropic model card removed Claude Fable 5 and Claude Mythos 5 selection guidance
• Aug 25, 2026OpenAI removed business pricing copy listing GPT-5.6 and GPT-Image-2 rates.

This is the world we build in. It moves this fast. We move with it.