if you're picking AI models for long-term sustainability you're doing it wrong. There's really no point in locking in model choice for anything more than a month or two these days.
These price reductions are mostly targeted towards self-serve customers on individual or small team plans, where individual choice matters and the friction of changing models/providers is low.
neither of these entail model lock-in
enterprise SaaS LLM calls do lock in rates but don't lock in models for similar reasons to the above.