Retrieve Message Batch results changedapi/beta/messages/batches/results
Nearest release: v2.1.272, published 5 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+88added
Lines−86removed
From line
1,600
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits30to this page, all time
The whole hunk
from line 1600, old and new numbered
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16011601 minimum: 0
16021602
1603 - `model: Model`
1603 - `model: Model or null`
16041604
16051605 The model that will complete your prompt.
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from line 1698
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16991699 Token usage for the fallback-model attempt of a server-side fallback request.
17001700
1701 Produced in place of a `message` entry for whichever hop served the
1702 response. A declined hop produces the existing `message` entry. Whether
1703 a fallback model served the response is signalled by the presence of this
1704 entry in `usage.iterations`.
1701 The terminal entry of a fallback-served turn: when a fallback hop's
1702 output is the returned message, the entry for the iteration that
1703 completed it carries this type in place of `message`. A declined hop
1704 and the serving hop's earlier tool-loop iterations produce `message`
1705 entries. Whether a fallback model served the response is signalled by
1706 the presence of this entry in `usage.iterations`.
17051707
17061708 - `type: "fallback_message"`
17071709
No line in this hunk matches that.