Create a Text Completion changedapi/completions/create
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+25added
Lines−3removed
From line
16
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits28to this page, all time
The whole hunk
from line 16, old and new numbered
/
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1616
1717 - `string`
1818
19 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
19 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
2020
2121 - `"message-batches-2024-09-24"`
2222
from line 100
100100
101101 - `"ce-user-management-2026-07-13"`
102102
103 - `"mid-conversation-output-config-2026-07-01"`
104
105 - `"thinking-binding-controls-2026-08-01"`
106
107 - `"mid-conversation-system-clear-at-2026-08-21"`
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103109## Body parameters
104110
105111- `max_tokens_to_sample: number`
from line 122
116122
117123 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
118124
119 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
125 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
120126
121127 The model that will complete your prompt.
122128
123129 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
124130
131 - `"claude-fable-5-1"`
132
133 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
134
135 - `"claude-mythos-5-1"`
136
137 Our most capable model for cybersecurity and biology research, available through trusted access programs
138
125139 - `"claude-sonnet-5"`
126140
127141 High-performance model for coding and agents
from line 302
288302
289303 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
290304
291 - `"claude-sonnet-5" or "claude-fable-5" or "claude-mythos-5" or 12 more`
305 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
292306
293307 The model that will complete your prompt.
294308
295309 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
310
311 - `"claude-fable-5-1"`
312
313 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
314
315 - `"claude-mythos-5-1"`
316
317 Our most capable model for cybersecurity and biology research, available through trusted access programs
296318
297319 - `"claude-sonnet-5"`
298320
No line in this hunk matches that.