Completions changedapi/completions
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+20added
Lines−4removed
From line
23
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 23, old and new numbered
/
from line 23
2323
2424 - `string`
2525
26 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 43 more`
26 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 more`
2727
2828 - `"message-batches-2024-09-24"`
2929
from line 117
117117
118118 - `"compact-2026-09-04"`
119119
120 - `"inline-tools-2026-09-15"`
121
122 - `"mcp-client-2026-09-15"`
123
120124- `"anthropic-workspace-id": optional string`
121125
122126 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 143
139143
140144 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
141145
142 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
146 - `"claude-fable-5-1" or "claude-opus-5-5" or "claude-mythos-5-1" or 15 more`
143147
144148 The model that will complete your prompt.
145149
from line 153
149153
150154 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
151155
156 - `"claude-opus-5-5"`
157
158 Powerful intelligence for coding, knowledge work, and long-running agents
159
152160 - `"claude-mythos-5-1"`
153161
154162 Our most capable model for cybersecurity and biology research, available through trusted access programs
from line 335
327335
328336 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
329337
330 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
338 - `"claude-fable-5-1" or "claude-opus-5-5" or "claude-mythos-5-1" or 15 more`
331339
332340 The model that will complete your prompt.
333341
from line 345
337345
338346 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
339347
348 - `"claude-opus-5-5"`
349
350 Powerful intelligence for coding, knowledge work, and long-running agents
351
340352 - `"claude-mythos-5-1"`
341353
342354 Our most capable model for cybersecurity and biology research, available through trusted access programs
from line 484
472484
473485 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
474486
475 - `"claude-fable-5-1" or "claude-mythos-5-1" or "claude-sonnet-5" or 14 more`
487 - `"claude-fable-5-1" or "claude-opus-5-5" or "claude-mythos-5-1" or 15 more`
476488
477489 The model that will complete your prompt.
478490
from line 493
481493 - `"claude-fable-5-1"`
482494
483495 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
496
497 - `"claude-opus-5-5"`
498
499 Powerful intelligence for coding, knowledge work, and long-running agents
484500
485501 - `"claude-mythos-5-1"`
486502
No line in this hunk matches that.