Go: usage log totals $3.31 but the 5-hour limit reported $12 (factor 3.6)

Summary

On August 23, 2026 my OpenCode Go session was cut off by the 5-hour usage limit. My own Usage History page, added up row by row for that entire window, totals $3.31 — but every meter on the subscription page reports $12.00.

That is a factor of 3.6 between what the itemized log says I used and what was debited against my plan.

Environment

Client	OpenCode 1.18.21
Plan	OpenCode Go
Models	gpt-5.6-luna, kimi-k2.7-code
Date	August 23, 2026, UTC-05

What happened

At 3:13 PM the client stopped with:

5 hour usage limit reached. It will reset in 2 hours 40 minutes.
To continue using this model now, enable usage from your available balance

The subscription page confirmed it:

• Continuous usage: 100% — resets in 2h 36m
• Weekly usage: 41%
• Monthly usage: 20%

Per the Go docs, the limits are $12 / 5h, $30 / week, $60 / month. So those bars translate to $12.00, $12.30 and $12.00 respectively. All three independently agree that ~$12 of usage was recorded.

What the usage log actually shows

The reset was scheduled for 5:49 PM, so the 5-hour window began at ~12:49 PM. I paged through the entire Usage History for that window and summed every row — 3 pages, 124 requests, 12:52 PM to 3:13 PM:

Page	Time range	Requests	Cost
3 (oldest)	12:52 PM – 1:23 PM	24	$0.3806
2	1:24 PM – 1:44 PM	50	$0.8648
1 (newest)	1:44 PM – 3:13 PM	50	$2.0612
Total	12:52 PM – 3:13 PM	124	$3.3066

Two points that rule out the obvious explanations:

1. The oldest row in the log (12:52 PM) sits at the very start of the 5-hour window. This is not earlier activity falling outside the pages I reviewed.
2. The weekly bar ($12.30) and monthly bar ($12.00) read essentially the same figure as the 5-hour bar. Virtually all of my usage this week and this month happened inside this one window. There is no activity elsewhere that could account for the missing ~$8.69.

Questions

1. Why does the itemized usage log total $3.31 while every meter reports $12.00?
2. Is usage debited against plan limits at the same dollar figure shown in the usage log, or at a different rate? The docs state limits are "defined in dollar value" but do not disclose that the log and the meter might use different figures.
3. Does the Usage History page show every billed request, or is it filtered/truncated?

Related

This looks like the same class of problem as #11170 — overcharge relative to itemized usage, no published support channel, and a usage page that paginates at 50 rows with no export. That issue was labelled a bug and assigned, but I see no public resolution.

Requests

• A complete, exportable itemized record of requests billed against an account for a given day, including the amount debited against the plan limit for each.
• An explanation of the discrepancy between the log and the meters.
• If the log is accurate, restoration of the ~$8.69 of quota consumed without a corresponding record.

I have screenshots of the usage log, the limit dialog and the subscription page, and can share them. I have also emailed help@anoma.ly (the only contact I could find, and only by reading the Terms of Service — there is no support contact published anywhere on opencode.ai).