Beta changedapi/beta
Nearest release: v2.1.290, published under an hour after 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+77added
Lines−32removed
From line
719
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits27to this page, all time
The whole hunk
from line 719, old and new numbered
/
This page is larger than the 256 KiB this site keeps, so one side of the diff below stops where the stored text does.
from line 719
719719
720720 A human-readable name for the model.
721721
722 - `line: BetaModelLine or null`
723
724 The model line this model belongs to, such as `opus` for both Claude Opus 4.5 and Claude Opus 4.6. More lines may be added. `null` when the model belongs to no line; do not infer a line from the `id`.
725
726 - `"haiku"`
727
728 - `"sonnet"`
729
730 - `"opus"`
731
732 - `"fable"`
733
734 - `"mythos"`
735
722736 - `max_input_tokens: number or null`
723737
724738 Maximum input context window size in tokens for this model.
from line 840
826840 },
827841 "created_at": "2026-07-24T00:00:00Z",
828842 "display_name": "Claude Opus 5",
843 "line": "haiku",
829844 "max_input_tokens": 0,
830845 "max_tokens": 0,
831846 "type": "model"
from line 1122
11071122
11081123 A human-readable name for the model.
11091124
1125 - `line: BetaModelLine or null`
1126
1127 The model line this model belongs to, such as `opus` for both Claude Opus 4.5 and Claude Opus 4.6. More lines may be added. `null` when the model belongs to no line; do not infer a line from the `id`.
1128
1129 - `"haiku"`
1130
1131 - `"sonnet"`
1132
1133 - `"opus"`
1134
1135 - `"fable"`
1136
1137 - `"mythos"`
1138
11101139 - `max_input_tokens: number or null`
11111140
11121141 Maximum input context window size in tokens for this model.
from line 1229
12001229 },
12011230 "created_at": "2026-07-24T00:00:00Z",
12021231 "display_name": "Claude Opus 5",
1232 "line": "haiku",
12031233 "max_input_tokens": 0,
12041234 "max_tokens": 0,
12051235 "type": "model"
from line 7793
77637793
77647794 minimum: 1
77657795
7766 - `max_uses: optional number or null`
7767
7768 Maximum number of times the tool can be used in the API request.
7769
7770 minimum: 1
7771
7772 - `strict: optional boolean`
7773
7774 When true, guarantees schema validation on tool names and inputs
7775
7776 - `url_sources: optional BetaWebFetchURLSources or null`
7777
7778 Which sources contribute to the set of URLs the tool may fetch. Omitted means every source.
7779
7780 - `client_tool_results: optional BetaWebFetchURLSourceAll or BetaWebFetchURLSourceNone or BetaWebFetchURLSourceOnly or BetaWebFetchURLSourceExcept`
7781
7782 Which client
7796
No line in this hunk matches that.