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Sweep 03 Oct 2026 · 20:28Z Build v2.1.289 510 read Stable v2.1.285 Latest v2.1.289 Next v2.1.289 Feeds RSS JSON llms.txt llms-full.txt Unofficial
One change · api

Update Agent changedapi/beta/agents/update

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+812added
Lines−830removed
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

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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 165
167165 
168166 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
169167 
170 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
168 - `"claude-sonnet-5-5"`
171169 
172 The model that will power your agent.
170 Efficient model for coding and agents
173171 
174 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
172 - `"claude-opus-5-5"`
175173 
176 - `"claude-sonnet-5-5"`
174 Powerful intelligence for coding, knowledge work, and long-running agents
177175 
178 Efficient model for coding and agents
176 - `"claude-fable-5-1"`
179177 
180 - `"claude-opus-5-5"`
178 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
181179 
182 Powerful intelligence for coding, knowledge work, and long-running agents
180 - `"claude-sonnet-5"`
183181 
184 - `"claude-fable-5-1"`
182 Efficient model for coding and agents
185183 
186 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
184 - `"claude-fable-5"`
187185 
188 - `"claude-sonnet-5"`
186 Next generation of intelligence for the hardest knowledge work and coding problems
189187 
190 Efficient model for coding and agents
188 - `"claude-opus-5"`
191189 
192 - `"claude-fable-5"`
190 Powerful intelligence for long-running agents and coding
193191 
194 Next generation of intelligence for the hardest knowledge work and coding problems
192 - `"claude-opus-4-8"`
195193 
196 - `"claude-opus-5"`
194 Powerful intelligence for long-running agents and coding
197195 
198 Powerful intelligence for long-running agents and coding
196 - `"claude-opus-4-7"`
199197 
200 - `"claude-opus-4-8"`
198 Powerful intelligence for long-running agents and coding
201199 
202 Powerful intelligence for long-running agents and coding
200 - `"claude-opus-4-6"`
203201 
204 - `"claude-opus-4-7"`
202 Powerful intelligence for long-running agents and coding
205203 
206 Powerful intelligence for long-running agents and coding
204 - `"claude-sonnet-4-6"`
207205 
208 - `"claude-opus-4-6"`
206 Best combination of speed and intelligence
209207 
210 Powerful intelligence for long-running agents and coding
208 - `"claude-haiku-4-5"`
211209 
212 - `"claude-sonnet-4-6"`
210 Fastest model with near-frontier intelligence
213211 
214 Best combination of speed and intelligence
212 - `"claude-haiku-4-5-20251001"`
215213 
216 - `"claude-haiku-4-5"`
214 Fastest model with near-frontier intelligence
217215 
218 Fastest model with near-frontier intelligence
216 - `"claude-opus-4-5"`
219217 
220 - `"claude-haiku-4-5-20251001"`
218 Powerful intelligence for long-running agents and coding
221219 
222 Fastest model with near-frontier intelligence
220 - `"claude-opus-4-5-20251101"`
223221 
224 - `"claude-opus-4-5"`
222 Powerful intelligence for long-running agents and coding
225223 
226 Powerful intelligence for long-running agents and coding
224 - `"claude-sonnet-4-5"`
227225 
228 - `"claude-opus-4-5-20251101"`
226 High-performance model for agents and coding
229227 
230 Powerful intelligence for long-running agents and coding
228 - `"claude-sonnet-4-5-20250929"`
231229 
232 - `"claude-sonnet-4-5"`
230 High-performance model for agents and coding
233231 
234 High-performance model for agents and coding
235 
236 - `"claude-sonnet-4-5-20250929"`
237 
238 High-performance model for agents and coding
239 
240232 - `string`
241233 
242234 - `BetaManagedAgentsModelConfigParams object`
from line 245
253245 
254246 How hard Claude works on each inference call. Accepts a bare level string (`"high"`) or `{"type": "high"}`. On create, omitting it resolves the per-model default; on update, omitting it leaves the stored value unchanged.
255247 
256 - `BetaManagedAgentsEffortLevel = "low" or "medium" or "high" or 2 more`
248 - `"low"`
257249 
258 How hard Claude works on each turn. Higher levels favor reasoning depth over latency. Not all models accept every level; invalid combinations are rejected at create time.
250 Low effort. Favors latency over reasoning depth.
259251 
260 - `"low"`
252 - `"medium"`
261253 
262 Low effort. Favors latency over reasoning depth.
254 Medium effort. Balances latency and reasoning depth.
263255 
264 - `"medium"`
256 - `"high"`
265257 
266 Medium effort. Balances latency and reasoning depth.
258 High effort. Favors reasoning depth.
267259 
268 - `"high"`
260 - `"xhigh"`
269261 
270 High effort. Favors reasoning depth.
262 Extra-high effort. Not all models accept this level.
271263 
272 - `"xhigh"`
264 - `"max"`
273265 
274 Extra-high effort. Not all models accept this level.
266 Maximum effort. Favors reasoning depth over latency.
275267 
276 - `"max"`
277 
278 Maximum effort. Favors reasoning depth over latency.
279 
280268 - `BetaManagedAgentsEffortLow object`
281269 
282270 Low effort. Favors latency over reasoning depth.
from line 887
899887 
900888 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
901889 
902 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
890 - `"claude-sonnet-5-5"`
903891 
904 The model that will power your agent.
892 Efficient model for coding and agents
905893 
906 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
894 - `"claude-opus-5-5"`
907895 
908 - `"claude-sonnet-5-5"`
896 Powerful intelligence for coding, knowledge work, and long-running agents
909897 
910 Efficient model for coding and agents
898 - `"claude-fable-5-1"`
911899 
912 - `"claude-opus-5-5"`
900 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
913901 
914 Powerful intelligence for coding, knowledge work, and long-running agents
902 - `"claude-sonnet-5"`
915903 
916 - `"claude-fable-5-1"`
904 Efficient model for coding and agents
917905 
918 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
906 - `"claude-fable-5"`
919907 
920 - `"claude-sonnet-5"`
908 Next generation of intelligence for the hardest knowledge work and coding problems
921909 
922 Efficient model for coding and agents
910 - `"claude-opus-5"`
923911 
924 - `"claude-fable-5"`
912 Powerful intelligence for long-running agents and coding
925913 
926 Next generation of intelligence for the hardest knowledge work and coding problems
914 - `"claude-opus-4-8"`
927915 
928 - `"claude-opus-5"`
916 Powerful intelligence for long-running agents and coding
929917 
930 Powerful intelligence for long-running agents and coding
918 - `"claude-opus-4-7"`
931919 
932 - `"claude-opus-4-8"`
920 Powerful intelligence for long-running agents and coding
933921 
934 Powerful intelligence for long-running agents and coding
922 - `"claude-opus-4-6"`
935923 
936 - `"claude-opus-4-7"`
924 Powerful intelligence for long-running agents and coding
937925 
938 Powerful intelligence for long-running agents and coding
926 - `"claude-sonnet-4-6"`
939927 
940 - `"claude-opus-4-6"`
928 Best combination of speed and intelligence
941929 
942 Powerful intelligence for long-running agents and coding
930 - `"claude-haiku-4-5"`
943931 
944 - `"claude-sonnet-4-6"`
932 Fastest model with near-frontier intelligence
945933 
946 Best combination of speed and intelligence
934 - `"claude-haiku-4-5-20251001"`
947935 
948 - `"claude-haiku-4-5"`
936 Fastest model with near-frontier intelligence
949937 
950 Fastest model with near-frontier intelligence
938 - `"claude-opus-4-5"`
951939 
952 - `"claude-haiku-4-5-20251001"`
940 Powerful intelligence for long-running agents and coding
953941 
954 Fastest model with near-frontier intelligence
942 - `"claude-opus-4-5-20251101"`
955943 
956 - `"claude-opus-4-5"`
944 Powerful intelligence for long-running agents and coding
957945 
958 Powerful intelligence for long-running agents and coding
946 - `"claude-sonnet-4-5"`
959947 
960 - `"claude-opus-4-5-20251101"`
948 High-performance model for agents and coding
961949 
962 Powerful intelligence for long-running agents and coding
950 - `"claude-sonnet-4-5-20250929"`
963951 
964 - `"claude-sonnet-4-5"`
965 
966 High-performance model for agents and coding
967 
968 - `"claude-sonnet-4-5-20250929"`
969 
970 High-performance model for agents and coding
952 High-performance model for agents and coding
971953 
972954 - `string`
973955 
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