Claude models

Which Claude model you pick changes how fast your limits fill: the most capable models use more of your allowance for the same conversation, and some have a weekly limit of their own. These articles compare Opus, Sonnet, Haiku and Fable on what matters day to day — quality, speed, context length and cost in usage — and explain what each release changed, with the date it came out. When an article compares models on your usage, it says which plan and which settings it assumes, because extended thinking and effort levels move the numbers as much as the model does.