Hey! Hope i can shed some more light on this
Is there a time limit (e.g., it lasts for 3 or 5 days after the $20 credit is used)?
Yes, once the monthly limit is exhausted you’ll have access to the local limits that are reset every 5-24 hours on a best-effort basis (meaning we wan’t to keep you going, but can’t guarantee when it will happen). You can read more here: Cursor – Models & Pricing
Does it function like the old ‘slow requests’ system, where resting for a while restores some limited usage?
You could say that with the local limits as outlined above. However, if local limits are met you can either enable usage based pricing, upgrade tier or wait until next local limit (or monthly) resets
Happy to clarify where I can!