Short answer: One code, redeemed once, gives 1 billion tokens (1,000,000,000) to the new user who redeems it. The owner of the code also receives 1 billion tokens for the same redemption. Each account can redeem one invite code, ever — so 1 billion is the total invite bonus an account can earn this way.
A token is the unit Muse counts when it reads and writes. Short chats use few tokens; long documents, large files and long agent runs use more. Your balance goes down as you use Muse, and the app always shows the real number.
It is a very large allowance compared with a free account's normal limits — for everyday chatting and agent tasks it lasts a long time. How fast it drains depends entirely on how you use Muse: light daily use barely dents it, while heavy long-document or coding-agent use draws it down much faster. Treat any per-day estimate with suspicion; your own Usage page is the only exact measure.
On the web: Settings → General → Usage. In the Muse app: Settings shows your usage and token balance. Check there after redeeming to confirm the 1 billion landed.
If you have not redeemed a code yet and your account is less than 48 hours old, claim a free code and redeem it now.
Q: How many tokens do I get for redeeming one Muse invite code? A: 1 billion tokens (1,000,000,000), credited to your account when the redemption succeeds.
Q: Does the code owner get anything? A: Yes — the owner also receives 1 billion tokens for each successful redemption of their code.
Q: Can I redeem two codes and get 2 billion? A: No. Each Muse account can redeem one invite code, ever. A second code cannot be applied to the same account.
Q: Where can I see my token balance? A: On the web under Settings → General → Usage, and in the Muse app under Settings. The figure shown in Muse is final.