Synthetic plans have a weekly credit limit that regenerates over time. Some models consume more of your credits than others, and larger plans have higher limits. See below for more details.
Synthetic only uses weekly limits. Unlike other services, there aren't additional five-hour or monthly limits.
Your remaining quota regenerates incrementally over the course of a week. Every 202 minutes (about 3.4 hours), you get back 2% of your total weekly credit limit. That means it takes one week to fully regenerate from zero.
Using cheaper models means your weekly limit will stretch further. Route lightweight tasks — summarization, title generation, codebase exploration — to a smaller model and your limit will go a lot further. You can see the exact rate that each model draws from plans on the model pricing page.
Unlike traditional rate limits — which reset on a fixed timer and lock you out for the entire reset period once you go over them — Synthetic continuously regenerates your credits in small increments: you're never waiting for a full reset. Even if you burn through your entire allowance, the next tick is always just around the corner:
This also means there is no penalty for burst usage. You can spend your whole weekly limit at once for a heavy coding session, and weekly credits will regenerate when you return sometime later.