Get a Model changedapi/beta/models/retrieve
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Lines+31added
Lines−0removed
From line
289
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
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289289
290290 format: date-time
291291
292 - `deprecated_at: string or null`
293
294 RFC 3339 datetime string representing the time of the model's most recent deprecation. Populated for `deprecated` and `retired` models; `null` while the model is `active`.
295
296 format: date-time
297
292298 - `display_name: string`
293299
294300 A human-readable name for the model.
295301
302 - `lifecycle: "active" or "deprecated" or "retired"`
303
304 The model's current lifecycle stage.
305
306 - `active`: The model is available for use, open to new adopters, and not scheduled for retirement.
307 - `deprecated`: The model remains callable for organizations with existing access, but is headed for retirement and closed to new adopters.
308 - `retired`: The model is no longer available for use; inference requests naming it fail. It remains in the catalogue as the historical record of its retirement.
309
310 default: active
311
312 - `"active"`
313
314 - `"deprecated"`
315
316 - `"retired"`
317
296318 - `line: BetaModelLine or null`
297319
298320 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`.
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315337
316338 Maximum value for the `max_tokens` parameter when using this model.
317339
340 - `retires_at: string or null`
341
342 RFC 3339 datetime string representing the model's currently scheduled retirement date. The schedule can be revised until retirement occurs; `null` while the model is `active` or while no retirement is scheduled. A past date on a `deprecated` model means retirement is overdue, not that it has occurred: `lifecycle` is the retirement signal.
343
344 format: date-time
345
318346## Example
319347
320348```bash
from line 439
411439 }
412440 },
413441 "created_at": "2026-07-24T00:00:00Z",
442 "deprecated_at": "2019-12-27T18:11:19.117Z",
414443 "display_name": "Claude Opus 5",
444 "lifecycle": "active",
415445 "line": "haiku",
416446 "max_input_tokens": 0,
417447 "max_tokens": 0,
448 "retires_at": "2019-12-27T18:11:19.117Z",
418449 "type": "model"
419450}
420451```
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