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

Completions changed

api/completions

Nearest release: v2.1.258, published 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+34added
Lines−4removed
From line 18 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits10to this page, all time

The whole hunk

from line 18, old and new numbered
/
lines
from line 18
1818 
1919 - `string`
2020 
21 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
21 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
2222 
2323 - `"message-batches-2024-09-24"`
2424 
from line 102
102102 
103103 - `"ce-user-management-2026-07-13"`
104104 
105 - `"mid-conversation-output-config-2026-07-01"`
106 
107 - `"thinking-binding-controls-2026-08-01"`
108 
109 - `"mid-conversation-system-clear-at-2026-08-21"`
110 
105111### Body parameters
106112 
107113- `max_tokens_to_sample: number`
from line 124
118124 
119125 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
120126 
121 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
127 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
122128 
123129 The model that will complete your prompt.
124130 
125131 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
126132 
133 - `"claude-fable-5-1"`
134 
135 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
136 
137 - `"claude-mythos-5-1"`
138 
139 Our most capable model for cybersecurity and biology research, available through trusted access programs
140 
127141 - `"claude-sonnet-5"`
128142 
129143 High-performance model for coding and agents
from line 304
290304 
291305 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
292306 
293 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
307 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
294308 
295309 The model that will complete your prompt.
296310 
297311 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
298312 
313 - `"claude-fable-5-1"`
314 
315 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
316 
317 - `"claude-mythos-5-1"`
318 
319 Our most capable model for cybersecurity and biology research, available through trusted access programs
320 
299321 - `"claude-sonnet-5"`
300322 
301323 High-performance model for coding and agents
from line 451
429451 
430452 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
431453 
432 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
454 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
433455 
434456 The model that will complete your prompt.
435457 
436458 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
459 
460 - `"claude-fable-5-1"`
461 
462 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
463 
464 - `"claude-mythos-5-1"`
465 
466 Our most capable model for cybersecurity and biology research, available through trusted access programs
437467 
438468 - `"claude-sonnet-5"`
439469