Quick answer
Model quota caps how much of a specific model you can use in a period. AI credits are a separate balance used where the plan allows usage beyond quota or on separately priced features. Quota decides when a model stops; credits decide whether you can continue by paying.
The difference
| Model quota | AI credits | |
|---|---|---|
| Unit | Usage per model | Currency |
| Resets | Per period | Per purchase or cycle |
| Limits | That model | Whatever the plan allows |
| Shown in | Usage panel | Billing |
| Blocks work | Yes | Only when empty |
Which to check first
- Check the model quota for the model you want.
- If it is empty, check whether credits can cover the usage.
- If neither is available, switch models or wait.
- Record what you spent so the next estimate is better.
Track both
Credits are a money question and quota is a capacity question. UsageAtlas shows reported quota alongside local token history, so you can see whether a credit spend came from a long context or from many small requests.
For a cross-tool explanation of credit mechanics, see how AI coding usage is measured.
Which balance to check first
| Question | Check | If empty |
|---|---|---|
| Can I use this model? | Model quota | Switch model |
| Can I pay to continue? | Credits | Top up if offered |
| Is the trial over? | Account page | Choose a plan |
| Is this an auth issue? | Sign-in state | Re-authenticate |
Quota is capacity and credits are money. Checking credits first leads to buying capacity you cannot use because the model is out of quota for the period.
See Antigravity quota and the cross-tool explanation in how AI coding usage is measured.
Questions, answered
Are Antigravity credits the same as quota?
No. Quota is a per-model allowance; credits are a balance used for usage the allowance does not cover.
Do credits expire?
That depends on how they were issued. Check the terms shown with the balance.
Can credits refill model quota?
They can pay for usage where the plan permits it, but they do not change the quota period.