Several LLM vendors publicly hike model and subscription prices this week

- This week several vendors publicly raised model and subscription prices, making per‑token and tiered costs more visible and forcing re‑evaluation of workflows. - Notable specifics: OpenAI reportedly doubled GPT‑5.5 rates, Anthropic set Opus 4.6/4.7 at roughly $5/$25 per million tokens, and Perplexity Max layered $200/month markups on similar models. - Observers warn the visible hikes widen enterprise pricing gaps and push teams to change routing, entitlement and cost controls. (x.com 1) (x.com 2)