Basic keeps usage simple with an included daily allowance. Flex gives you model choice, token-based billing, and controls for heavier work.
Included-model plan
Best for regular messenger use when you want a clear daily allowance and do not need to choose between frontier models.
Model-choice plan
Best when you want stronger or specialized models and are comfortable paying for the tokens those models use.
You want a predictable daily allowance, no token math, and a ready-to-use Bro for everyday chats, voice notes, and simple tasks.
You want control over model choice, heavier agentic work, image or video tasks, and spending limits you can tune yourself.
An AI token is the smallest unit used to measure how much work a model does. Heavy coding tasks, web-search tasks, long conversations, files, tool results, and detailed answers usually spend more tokens. On Basic, you are not billed per token, so you have more predictable usage. Basic requests are handled by a very capable model, though not a frontier one. On Flex, you can use many more models, including frontier models, and you pay as you go for each token spent. Read more about tokens on Wikipedia.
Typical usage for a basic user is under 1M tokens per day, so you can estimate your spending accordingly.