Get a Model changedapi/beta/models/retrieve
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+15added
Lines−0removed
From line
273
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits23to this page, all time
The whole hunk
from line 273, old and new numbered
/
from line 273
273273
274274 A human-readable name for the model.
275275
276 - `line: BetaModelLine or null`
277
278 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`.
279
280 - `"haiku"`
281
282 - `"sonnet"`
283
284 - `"opus"`
285
286 - `"fable"`
287
288 - `"mythos"`
289
276290 - `max_input_tokens: number or null`
277291
278292 Maximum input context window size in tokens for this model.
from line 380
366380 },
367381 "created_at": "2026-07-24T00:00:00Z",
368382 "display_name": "Claude Opus 5",
383 "line": "haiku",
369384 "max_input_tokens": 0,
370385 "max_tokens": 0,
371386 "type": "model"
No line in this hunk matches that.