Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
One change · api

Retrieve Message Batch results changed

api/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 edits12to this page, all time

The whole hunk

from line 1600, old and new numbered
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lines
from line 1600
16001600 
16011601 minimum: 0
16021602 
1603 - `model: Model`
1603 - `model: Model or null`
16041604 
16051605 The model that will complete your prompt.
16061606 
from line 1698
16981698 
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