Create a Message Batch changedapi/beta/messages/batches/create
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+173added
Lines−181removed
From line
21
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits17to 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 45 more`
24 - `"message-batches-2024-09-24"`
2525
26 - `"message-batches-2024-09-24"`
26 - `"prompt-caching-2024-07-31"`
2727
28 - `"prompt-caching-2024-07-31"`
28 - `"computer-use-2024-10-22"`
2929
30 - `"computer-use-2024-10-22"`
30 - `"computer-use-2025-01-24"`
3131
32 - `"computer-use-2025-01-24"`
32 - `"pdfs-2024-09-25"`
3333
34 - `"pdfs-2024-09-25"`
34 - `"token-counting-2024-11-01"`
3535
36 - `"token-counting-2024-11-01"`
36 - `"token-efficient-tools-2025-02-19"`
3737
38 - `"token-efficient-tools-2025-02-19"`
38 - `"output-128k-2025-02-19"`
3939
40 - `"output-128k-2025-02-19"`
40 - `"files-api-2025-04-14"`
4141
42 - `"files-api-2025-04-14"`
42 - `"mcp-client-2025-04-04"`
4343
44 - `"mcp-client-2025-04-04"`
44 - `"mcp-client-2025-11-20"`
4545
46 - `"mcp-client-2025-11-20"`
46 - `"dev-full-thinking-2025-05-14"`
4747
48 - `"dev-full-thinking-2025-05-14"`
48 - `"interleaved-thinking-2025-05-14"`
4949
50 - `"interleaved-thinking-2025-05-14"`
50 - `"code-execution-2025-05-22"`
5151
52 - `"code-execution-2025-05-22"`
52 - `"extended-cache-ttl-2025-04-11"`
5353
54 - `"extended-cache-ttl-2025-04-11"`
54 - `"context-1m-2025-08-07"`
5555
56 - `"context-1m-2025-08-07"`
56 - `"context-management-2025-06-27"`
5757
58 - `"context-management-2025-06-27"`
58 - `"model-context-window-exceeded-2025-08-26"`
5959
60 - `"model-context-window-exceeded-2025-08-26"`
60 - `"skills-2025-10-02"`
6161
62 - `"skills-2025-10-02"`
62 - `"fast-mode-2026-02-01"`
6363
64 - `"fast-mode-2026-02-01"`
64 - `"output-300k-2026-03-24"`
6565
66 - `"output-300k-2026-03-24"`
66 - `"user-profiles-2026-03-24"`
6767
68 - `"user-profiles-2026-03-24"`
68 - `"user-profiles-2026-08-18"`
6969
70 - `"user-profiles-2026-08-18"`
70 - `"user-profiles-2026-09-04"`
7171
72 - `"user-profiles-2026-09-04"`
72 - `"advisor-tool-2026-03-01"`
7373
74 - `"advisor-tool-2026-03-01"`
74 - `"managed-agents-2026-04-01"`
7575
76 - `"managed-agents-2026-04-01"`
76 - `"cache-diagnosis-2026-04-07"`
7777
78 - `"cache-diagnosis-2026-04-07"`
78 - `"dreaming-2026-04-21"`
7979
80 - `"dreaming-2026-04-21"`
80 - `"thinking-token-count-2026-05-13"`
8181
82 - `"thinking-token-count-2026-05-13"`
82 - `"server-side-fallback-2026-06-01"`
8383
84 - `"server-side-fallback-2026-06-01"`
84 - `"server-side-fallback-2026-07-01"`
8585
86 - `"server-side-fallback-2026-07-01"`
86 - `"fallback-credit-2026-06-01"`
8787
88 - `"fallback-credit-2026-06-01"`
88 - `"fallback-credit-2026-07-01"`
8989
90 - `"fallback-credit-2026-07-01"`
90 - `"agent-memory-2026-07-22"`
9191
92 - `"agent-memory-2026-07-22"`
92 - `"mid-conversation-tool-changes-2026-07-01"`
9393
94 - `"mid-conversation-tool-changes-2026-07-01"`
94 - `"compact-2026-01-12"`
9595
96 - `"compact-2026-01-12"`
96 - `"computer-use-2025-11-24"`
9797
98 - `"computer-use-2025-11-24"`
98 - `"mcp-tunnels-2026-06-22"`
9999
100 - `"mcp-tunnels-2026-06-22"`
100 - `"structured-outputs-2025-11-13"`
101101
102 - `"structured-outputs-2025-11-13"`
102 - `"task-budgets-2026-03-13"`
103103
104 - `"task-budgets-2026-03-13"`
104 - `"thinking-display-updates-2026-08-18"`
105105
106 - `"thinking-display-updates-2026-08-18"`
106 - `"ce-user-management-2026-07-13"`
107107
108 - `"ce-user-management-2026-07-13"`
108 - `"mid-conversation-output-config-2026-07-01"`
109109
110 - `"mid-conversation-output-config-2026-07-01"`
110 - `"thinking-binding-controls-2026-08-01"`
111111
112 - `"thinking-binding-controls-2026-08-01"`
112 - `"mid-conversation-system-clear-at-2026-08-21"`
113113
114 - `"mid-conversation-system-clear-at-2026-08-21"`
114 - `"compact-2026-09-04"`
115115
116 - `"compact-2026-09-04"`
116 - `"inline-tools-2026-09-15"`
117117
118 - `"inline-tools-2026-09-15"`
118 - `"mcp-client-2026-09-15"`
119119
120 - `"mcp-client-2026-09-15"`
121
122120- `"anthropic-user-profile-id": optional string`
123121
124122 The user profile ID to attribute the requests in this batch to. Use when acting on behalf of a party other than your organization. Requires the `user-profiles` beta header. Applies to every request in the batch; an individual request whose `user_profile_id` body field conflicts with this header is errored.
from line 3120
31223120
31233121 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
31243122
3125 - `"claude-sonnet-5-5" or "claude-fable-5-1" or "claude-opus-5-5" or 16 more`
3123 - `"claude-sonnet-5-5"`
31263124
3127 The model that will complete your prompt.
3125 Efficient model for coding and agents
31283126
3129 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
3127 - `"claude-fable-5-1"`
31303128
3131 - `"claude-sonnet-5-5"`
3129 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
31323130
3133 Efficient model for coding and agents
3131 - `"claude-opus-5-5"`
31343132
3135 - `"claude-fable-5-1"`
3133 Powerful intelligence for coding, knowledge work, and long-running agents
31363134
3137 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
3135 - `"claude-mythos-5-1"`
31383136
3139 - `"claude-opus-5-5"`
3137 Our most capable model for cybersecurity and biology research, available through trusted access programs
31403138
3141 Powerful intelligence for coding, knowledge work, and long-running agents
3139 - `"claude-sonnet-5"`
31423140
3143 - `"claude-mythos-5-1"`
3141 Efficient model for coding and agents
31443142
3145 Our most capable model for cybersecurity and biology research, available through trusted access programs
3143 - `"claude-fable-5"`
31463144
3147 - `"claude-sonnet-5"`
3145 Next generation of intelligence for the hardest knowledge work and coding problems
31483146
3149 Efficient model for coding and agents
3147 - `"claude-mythos-5"`
31503148
3151 - `"claude-fable-5"`
3149 Most capable model for cybersecurity and biology research
31523150
3153 Next generation of intelligence for the hardest knowledge work and coding problems
3151 - `"claude-opus-5"`
31543152
3155 - `"claude-mythos-5"`
3153 Powerful intelligence for long-running agents and coding
31563154
3157 Most capable model for cybersecurity and biology research
3155 - `"claude-opus-4-8"`
31583156
3159 - `"claude-opus-5"`
3157 Powerful intelligence for long-running agents and coding
31603158
3161 Powerful intelligence for long-running agents and coding
3159 - `"claude-opus-4-7"`
31623160
3163 - `"claude-opus-4-8"`
3161 Powerful intelligence for long-running agents and coding
31643162
3165 Powerful intelligence for long-running agents and coding
3163 - `"claude-opus-4-6"`
31663164
3167 - `"claude-opus-4-7"`
3165 Powerful intelligence for long-running agents and coding
31683166
3169 Powerful intelligence for long-running agents and coding
3167 - `"claude-sonnet-4-6"`
31703168
3171 - `"claude-opus-4-6"`
3169 Best combination of speed and intelligence
31723170
3173 Powerful intelligence for long-running agents and coding
3171 - `"claude-haiku-4-5"`
31743172
3175 - `"claude-sonnet-4-6"`
3173 Fastest model with near-frontier intelligence
31763174
3177 Best combination of speed and intelligence
3175 - `"claude-haiku-4-5-20251001"`
31783176
3179 - `"claude-haiku-4-5"`
3177 Fastest model with near-frontier intelligence
31803178
3181 Fastest model with near-frontier intelligence
3179 - `"claude-opus-4-5"`
31823180
3183 - `"claude-haiku-4-5-20251001"`
3181 Powerful intelligence for long-running agents and coding
31843182
3185 Fastest model with near-frontier intelligence
3183 - `"claude-opus-4-5-20251101"`
31863184
3187 - `"claude-opus-4-5"`
3185 Powerful intelligence for long-running agents and coding
31883186
3189 Powerful intelligence for long-running agents and coding
3187 - `"claude-sonnet-4-5"`
31903188
3191 - `"claude-opus-4-5-20251101"`
3189 High-performance model for agents and coding
31923190
3193 Powerful intelligence for long-running agents and coding
3191 - `"claude-sonnet-4-5-20250929"`
31943192
3195 - `"claude-sonnet-4-5"`
3193 High-performance model for agents and coding
31963194
3197 High-performance model for agents and coding
3195 - `"claude-mythos-preview"`
31983196
3199 - `"claude-sonnet-4-5-20250929"`
3197 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
32003198
3201 High-performance model for agents and coding
3199 New class of intelligence, strongest in coding and cybersecurity
32023200
3203 - `"claude-mythos-preview"`
3204
3205 **Deprecated**: Will reach end-of-life on June 30, 2026. Please migrate to claude-mythos-5. Visit https://docs.anthropic.com/en/docs/resources/model-deprecations for more information.
3206
3207 New class of intelligence, strongest in coding and cybersecurity
3208
32093201 - `string`
32103202
32113203 - `name: "advisor"`
from line 3898
39063898
39073899 - `"updates"`
39083900
3909 - `Default = "default"`
3901 - `"default"`
39103902
39113903 - `inference_geo: optional string or null`
39123904
No line in this hunk matches that.