Claude Pro/Max plans expose a usage API at https://claude.ai/api/oauth/usage that returns two utilization counters:
five_hour.utilization— a rolling 5-hour window (well documented)seven_day.utilization— described as a "weekly" cap
The seven_day object also contains a resets_at field. Monitoring this field over ~11 days (June 9–20, 2026) revealed that the "weekly" limit does not reset every 7 days — it resets every 72 hours.
All times are UTC. Resets detected as sharp drops in seven_day.utilization:
| Reset time (UTC) | Local (CEST, UTC+2) | Weekday | Gap from previous |
|---|---|---|---|
| 2026-06-10 04:25 | 06:25 | Wednesday | — |
| 2026-06-13 04:21 | 06:21 | Saturday | 71.9 h (3.00 days) |
| 2026-06-16 05:00 | 07:00 | Tuesday | 72.6 h (3.03 days) |
| 2026-06-19 05:29 | 07:29 | Friday | 72.5 h (3.02 days) |
| 2026-06-20 04:50 | 06:50 | Saturday | — |
The 72-hour intervals are extremely consistent (±0.6 h over three consecutive cycles). Resets happen at a fixed anchor time (~04:50–05:00 UTC), not on a specific weekday.
Anthropic does not document this behavior publicly as of June 2026.
seven_day.resets_at consistently returned a date approximately one week in the future — always landing near Tuesday at ~07:00 local time in CEST. This is technically accurate for a 7-day rolling window (it tells you when the oldest tokens in the window drop off), but it does not predict when you get a fresh allocation.
The actual rate limit reset — when utilization drops back to near zero — follows the 72-hour cycle, not the 7-day window timestamp.
Instead of relying on seven_day.resets_at, detect the last drop in the utilization counter and project forward by 72 hours:
- Does it apply to all plan tiers (Pro, Max 5x, Max 20x)?
For the last two weeks, up until June 21, Claude used to reset tokens on weekends. However, Claude didn't reset them this weekend. :(
27th June