-``onechat probe LOG COUNT`` measures the compactor on a log. It appends
-the first COUNT messages of LOG, one JSON object ``{"kind", "text"}`` on
-each line, to a new chat in ``probe/`` in the data directory, and builds
-its tree with real model calls. The calls use the quota of the account.
-The run stops at the first failed call, or when the used percent of a
-quota window grows by more than 15 points. At the end it reports the
-calls per message, the cached share of the input tokens, the retries,
-the line sizes, and the quota at the first and the last call.
+``onechat probe LOG COUNT [BUILDS]`` measures the compactor on a log. It
+appends the first COUNT messages of LOG, one JSON object ``{"kind",
+"text"}`` on each line, to a new chat in ``probe/`` in the data
+directory, and builds its tree with real model calls. The calls use the
+quota of the account. The run stops at the first failed call, after 660
+calls, or when the used percent of a quota window grows by more than 15
+points. At the end it reports the calls per message, the cached share of
+the input tokens, the retries, the line sizes, and the quota at the
+first and the last call. BUILDS, from 1 to 8, limits the model calls at
+once in the run.