Get Session Thread changedapi/beta/sessions/threads/retrieve
Nearest release: v2.1.286, 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+158added
Lines−166removed
From line
23
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits15to 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 45 more`
26 - `"message-batches-2024-09-24"`
2727
28 - `"message-batches-2024-09-24"`
28 - `"prompt-caching-2024-07-31"`
2929
30 - `"prompt-caching-2024-07-31"`
30 - `"computer-use-2024-10-22"`
3131
32 - `"computer-use-2024-10-22"`
32 - `"computer-use-2025-01-24"`
3333
34 - `"computer-use-2025-01-24"`
34 - `"pdfs-2024-09-25"`
3535
36 - `"pdfs-2024-09-25"`
36 - `"token-counting-2024-11-01"`
3737
38 - `"token-counting-2024-11-01"`
38 - `"token-efficient-tools-2025-02-19"`
3939
40 - `"token-efficient-tools-2025-02-19"`
40 - `"output-128k-2025-02-19"`
4141
42 - `"output-128k-2025-02-19"`
42 - `"files-api-2025-04-14"`
4343
44 - `"files-api-2025-04-14"`
44 - `"mcp-client-2025-04-04"`
4545
46 - `"mcp-client-2025-04-04"`
46 - `"mcp-client-2025-11-20"`
4747
48 - `"mcp-client-2025-11-20"`
48 - `"dev-full-thinking-2025-05-14"`
4949
50 - `"dev-full-thinking-2025-05-14"`
50 - `"interleaved-thinking-2025-05-14"`
5151
52 - `"interleaved-thinking-2025-05-14"`
52 - `"code-execution-2025-05-22"`
5353
54 - `"code-execution-2025-05-22"`
54 - `"extended-cache-ttl-2025-04-11"`
5555
56 - `"extended-cache-ttl-2025-04-11"`
56 - `"context-1m-2025-08-07"`
5757
58 - `"context-1m-2025-08-07"`
58 - `"context-management-2025-06-27"`
5959
60 - `"context-management-2025-06-27"`
60 - `"model-context-window-exceeded-2025-08-26"`
6161
62 - `"model-context-window-exceeded-2025-08-26"`
62 - `"skills-2025-10-02"`
6363
64 - `"skills-2025-10-02"`
64 - `"fast-mode-2026-02-01"`
6565
66 - `"fast-mode-2026-02-01"`
66 - `"output-300k-2026-03-24"`
6767
68 - `"output-300k-2026-03-24"`
68 - `"user-profiles-2026-03-24"`
6969
70 - `"user-profiles-2026-03-24"`
70 - `"user-profiles-2026-08-18"`
7171
72 - `"user-profiles-2026-08-18"`
72 - `"user-profiles-2026-09-04"`
7373
74 - `"user-profiles-2026-09-04"`
74 - `"advisor-tool-2026-03-01"`
7575
76 - `"advisor-tool-2026-03-01"`
76 - `"managed-agents-2026-04-01"`
7777
78 - `"managed-agents-2026-04-01"`
78 - `"cache-diagnosis-2026-04-07"`
7979
80 - `"cache-diagnosis-2026-04-07"`
80 - `"dreaming-2026-04-21"`
8181
82 - `"dreaming-2026-04-21"`
82 - `"thinking-token-count-2026-05-13"`
8383
84 - `"thinking-token-count-2026-05-13"`
84 - `"server-side-fallback-2026-06-01"`
8585
86 - `"server-side-fallback-2026-06-01"`
86 - `"server-side-fallback-2026-07-01"`
8787
88 - `"server-side-fallback-2026-07-01"`
88 - `"fallback-credit-2026-06-01"`
8989
90 - `"fallback-credit-2026-06-01"`
90 - `"fallback-credit-2026-07-01"`
9191
92 - `"fallback-credit-2026-07-01"`
92 - `"agent-memory-2026-07-22"`
9393
94 - `"agent-memory-2026-07-22"`
94 - `"mid-conversation-tool-changes-2026-07-01"`
9595
96 - `"mid-conversation-tool-changes-2026-07-01"`
96 - `"compact-2026-01-12"`
9797
98 - `"compact-2026-01-12"`
98 - `"computer-use-2025-11-24"`
9999
100 - `"computer-use-2025-11-24"`
100 - `"mcp-tunnels-2026-06-22"`
101101
102 - `"mcp-tunnels-2026-06-22"`
102 - `"structured-outputs-2025-11-13"`
103103
104 - `"structured-outputs-2025-11-13"`
104 - `"task-budgets-2026-03-13"`
105105
106 - `"task-budgets-2026-03-13"`
106 - `"thinking-display-updates-2026-08-18"`
107107
108 - `"thinking-display-updates-2026-08-18"`
108 - `"ce-user-management-2026-07-13"`
109109
110 - `"ce-user-management-2026-07-13"`
110 - `"mid-conversation-output-config-2026-07-01"`
111111
112 - `"mid-conversation-output-config-2026-07-01"`
112 - `"thinking-binding-controls-2026-08-01"`
113113
114 - `"thinking-binding-controls-2026-08-01"`
114 - `"mid-conversation-system-clear-at-2026-08-21"`
115115
116 - `"mid-conversation-system-clear-at-2026-08-21"`
116 - `"compact-2026-09-04"`
117117
118 - `"compact-2026-09-04"`
118 - `"inline-tools-2026-09-15"`
119119
120 - `"inline-tools-2026-09-15"`
120 - `"mcp-client-2026-09-15"`
121121
122 - `"mcp-client-2026-09-15"`
123
124122- `"anthropic-workspace-id": optional string`
125123
126124 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 169
171169
172170 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
173171
174 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
172 - `"claude-sonnet-5-5"`
175173
176 The model that will power your agent.
174 Efficient model for coding and agents
177175
178 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
176 - `"claude-opus-5-5"`
179177
180 - `"claude-sonnet-5-5"`
178 Powerful intelligence for coding, knowledge work, and long-running agents
181179
182 Efficient model for coding and agents
180 - `"claude-fable-5-1"`
183181
184 - `"claude-opus-5-5"`
182 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
185183
186 Powerful intelligence for coding, knowledge work, and long-running agents
184 - `"claude-sonnet-5"`
187185
188 - `"claude-fable-5-1"`
186 Efficient model for coding and agents
189187
190 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
188 - `"claude-fable-5"`
191189
192 - `"claude-sonnet-5"`
190 Next generation of intelligence for the hardest knowledge work and coding problems
193191
194 Efficient model for coding and agents
192 - `"claude-opus-5"`
195193
196 - `"claude-fable-5"`
194 Powerful intelligence for long-running agents and coding
197195
198 Next generation of intelligence for the hardest knowledge work and coding problems
196 - `"claude-opus-4-8"`
199197
200 - `"claude-opus-5"`
198 Powerful intelligence for long-running agents and coding
201199
202 Powerful intelligence for long-running agents and coding
200 - `"claude-opus-4-7"`
203201
204 - `"claude-opus-4-8"`
202 Powerful intelligence for long-running agents and coding
205203
206 Powerful intelligence for long-running agents and coding
204 - `"claude-opus-4-6"`
207205
208 - `"claude-opus-4-7"`
206 Powerful intelligence for long-running agents and coding
209207
210 Powerful intelligence for long-running agents and coding
208 - `"claude-sonnet-4-6"`
211209
212 - `"claude-opus-4-6"`
210 Best combination of speed and intelligence
213211
214 Powerful intelligence for long-running agents and coding
212 - `"claude-haiku-4-5"`
215213
216 - `"claude-sonnet-4-6"`
214 Fastest model with near-frontier intelligence
217215
218 Best combination of speed and intelligence
216 - `"claude-haiku-4-5-20251001"`
219217
220 - `"claude-haiku-4-5"`
218 Fastest model with near-frontier intelligence
221219
222 Fastest model with near-frontier intelligence
220 - `"claude-opus-4-5"`
223221
224 - `"claude-haiku-4-5-20251001"`
222 Powerful intelligence for long-running agents and coding
225223
226 Fastest model with near-frontier intelligence
224 - `"claude-opus-4-5-20251101"`
227225
228 - `"claude-opus-4-5"`
226 Powerful intelligence for long-running agents and coding
229227
230 Powerful intelligence for long-running agents and coding
228 - `"claude-sonnet-4-5"`
231229
232 - `"claude-opus-4-5-20251101"`
230 High-performance model for agents and coding
233231
234 Powerful intelligence for long-running agents and coding
232 - `"claude-sonnet-4-5-20250929"`
235233
236 - `"claude-sonnet-4-5"`
237
238 High-performance model for agents and coding
239
240 - `"claude-sonnet-4-5-20250929"`
241
242 High-performance model for agents and coding
234 High-performance model for agents and coding
243235
244236 - `string`
245237
No line in this hunk matches that.