Create a Text Completion changedapi/completions/create
Nearest release: v2.1.281, published an hour before 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−3removed
From line
21
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits13to this page, all time
The whole hunk
from line 21, old and new numbered
/
from line 21
2121
2222 - `string`
2323
24 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 43 more`
24 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 more`
2525
2626 - `"message-batches-2024-09-24"`
2727
from line 115
115115
116116 - `"compact-2026-09-04"`
117117
118 - `"inline-tools-2026-09-15"`
119
120 - `"mcp-client-2026-09-15"`
121
118122- `"anthropic-workspace-id": optional string`
119123
120124 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 141
137141
138142 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
139143
140 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
144 - `"claude-fable-5-1" or "claude-opus-5-5" or "claude-mythos-5-1" or 15 more`
141145
142146 The model that will complete your prompt.
143147
from line 151
147151
148152 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
149153
154 - `"claude-opus-5-5"`
155
156 Powerful intelligence for coding, knowledge work, and long-running agents
157
150158 - `"claude-mythos-5-1"`
151159
152160 Our most capable model for cybersecurity and biology research, available through trusted access programs
from line 333
325333
326334 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
327335
328 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
336 - `"claude-fable-5-1" or "claude-opus-5-5" or "claude-mythos-5-1" or 15 more`
329337
330338 The model that will complete your prompt.
331339
from line 342
334342 - `"claude-fable-5-1"`
335343
336344 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
345
346 - `"claude-opus-5-5"`
347
348 Powerful intelligence for coding, knowledge work, and long-running agents
337349
338350 - `"claude-mythos-5-1"`
339351
No line in this hunk matches that.