All the 4.x models are still available, and they all cost the same.
> Opus 4.7 and later use a new tokenizer compared to previous models, contributing to their improved performance on a wide range of tasks. This new tokenizer may use up to 35% more tokens for the same fixed text.
Same cost/token, more token usage.
alt Hacker News
> Opus 4.7 and later use a new tokenizer compared to previous models, contributing to their improved performance on a wide range of tasks. This new tokenizer may use up to 35% more tokens for the same fixed text.
Same cost/token, more token usage.