Stream Events changedapi/beta/sessions/events/stream
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
31
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits18to this page, all time
The whole hunk
from line 31, old and new numbered
/
from line 31
3131
3232 - `string`
3333
34 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 more`
34 - `"message-batches-2024-09-24"`
3535
36 - `"message-batches-2024-09-24"`
36 - `"prompt-caching-2024-07-31"`
3737
38 - `"prompt-caching-2024-07-31"`
38 - `"computer-use-2024-10-22"`
3939
40 - `"computer-use-2024-10-22"`
40 - `"computer-use-2025-01-24"`
4141
42 - `"computer-use-2025-01-24"`
42 - `"pdfs-2024-09-25"`
4343
44 - `"pdfs-2024-09-25"`
44 - `"token-counting-2024-11-01"`
4545
46 - `"token-counting-2024-11-01"`
46 - `"token-efficient-tools-2025-02-19"`
4747
48 - `"token-efficient-tools-2025-02-19"`
48 - `"output-128k-2025-02-19"`
4949
50 - `"output-128k-2025-02-19"`
50 - `"files-api-2025-04-14"`
5151
52 - `"files-api-2025-04-14"`
52 - `"mcp-client-2025-04-04"`
5353
54 - `"mcp-client-2025-04-04"`
54 - `"mcp-client-2025-11-20"`
5555
56 - `"mcp-client-2025-11-20"`
56 - `"dev-full-thinking-2025-05-14"`
5757
58 - `"dev-full-thinking-2025-05-14"`
58 - `"interleaved-thinking-2025-05-14"`
5959
60 - `"interleaved-thinking-2025-05-14"`
60 - `"code-execution-2025-05-22"`
6161
62 - `"code-execution-2025-05-22"`
62 - `"extended-cache-ttl-2025-04-11"`
6363
64 - `"extended-cache-ttl-2025-04-11"`
64 - `"context-1m-2025-08-07"`
6565
66 - `"context-1m-2025-08-07"`
66 - `"context-management-2025-06-27"`
6767
68 - `"context-management-2025-06-27"`
68 - `"model-context-window-exceeded-2025-08-26"`
6969
70 - `"model-context-window-exceeded-2025-08-26"`
70 - `"skills-2025-10-02"`
7171
72 - `"skills-2025-10-02"`
72 - `"fast-mode-2026-02-01"`
7373
74 - `"fast-mode-2026-02-01"`
74 - `"output-300k-2026-03-24"`
7575
76 - `"output-300k-2026-03-24"`
76 - `"user-profiles-2026-03-24"`
7777
78 - `"user-profiles-2026-03-24"`
78 - `"user-profiles-2026-08-18"`
7979
80 - `"user-profiles-2026-08-18"`
80 - `"user-profiles-2026-09-04"`
8181
82 - `"user-profiles-2026-09-04"`
82 - `"advisor-tool-2026-03-01"`
8383
84 - `"advisor-tool-2026-03-01"`
84 - `"managed-agents-2026-04-01"`
8585
86 - `"managed-agents-2026-04-01"`
86 - `"cache-diagnosis-2026-04-07"`
8787
88 - `"cache-diagnosis-2026-04-07"`
88 - `"dreaming-2026-04-21"`
8989
90 - `"dreaming-2026-04-21"`
90 - `"thinking-token-count-2026-05-13"`
9191
92 - `"thinking-token-count-2026-05-13"`
92 - `"server-side-fallback-2026-06-01"`
9393
94 - `"server-side-fallback-2026-06-01"`
94 - `"server-side-fallback-2026-07-01"`
9595
96 - `"server-side-fallback-2026-07-01"`
96 - `"fallback-credit-2026-06-01"`
9797
98 - `"fallback-credit-2026-06-01"`
98 - `"fallback-credit-2026-07-01"`
9999
100 - `"fallback-credit-2026-07-01"`
100 - `"agent-memory-2026-07-22"`
101101
102 - `"agent-memory-2026-07-22"`
102 - `"mid-conversation-tool-changes-2026-07-01"`
103103
104 - `"mid-conversation-tool-changes-2026-07-01"`
104 - `"compact-2026-01-12"`
105105
106 - `"compact-2026-01-12"`
106 - `"computer-use-2025-11-24"`
107107
108 - `"computer-use-2025-11-24"`
108 - `"mcp-tunnels-2026-06-22"`
109109
110 - `"mcp-tunnels-2026-06-22"`
110 - `"structured-outputs-2025-11-13"`
111111
112 - `"structured-outputs-2025-11-13"`
112 - `"task-budgets-2026-03-13"`
113113
114 - `"task-budgets-2026-03-13"`
114 - `"thinking-display-updates-2026-08-18"`
115115
116 - `"thinking-display-updates-2026-08-18"`
116 - `"ce-user-management-2026-07-13"`
117117
118 - `"ce-user-management-2026-07-13"`
118 - `"mid-conversation-output-config-2026-07-01"`
119119
120 - `"mid-conversation-output-config-2026-07-01"`
120 - `"thinking-binding-controls-2026-08-01"`
121121
122 - `"thinking-binding-controls-2026-08-01"`
122 - `"mid-conversation-system-clear-at-2026-08-21"`
123123
124 - `"mid-conversation-system-clear-at-2026-08-21"`
124 - `"compact-2026-09-04"`
125125
126 - `"compact-2026-09-04"`
126 - `"inline-tools-2026-09-15"`
127127
128 - `"inline-tools-2026-09-15"`
128 - `"mcp-client-2026-09-15"`
129129
130 - `"mcp-client-2026-09-15"`
131
132130- `"anthropic-workspace-id": optional string`
133131
134132 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 1655
16571655
16581656 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
16591657
1660 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
1658 - `"claude-sonnet-5-5"`
16611659
1662 The model that will power your agent.
1660 Efficient model for coding and agents
16631661
1664 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
1662 - `"claude-opus-5-5"`
16651663
1666 - `"claude-sonnet-5-5"`
1664 Powerful intelligence for coding, knowledge work, and long-running agents
16671665
1668 Efficient model for coding and agents
1666 - `"claude-fable-5-1"`
16691667
1670 - `"claude-opus-5-5"`
1668 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
16711669
1672 Powerful intelligence for coding, knowledge work, and long-running agents
1670 - `"claude-sonnet-5"`
16731671
1674 - `"claude-fable-5-1"`
1672 Efficient model for coding and agents
16751673
1676 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
1674 - `"claude-fable-5"`
16771675
1678 - `"claude-sonnet-5"`
1676 Next generation of intelligence for the hardest knowledge work and coding problems
16791677
1680 Efficient model for coding and agents
1678 - `"claude-opus-5"`
16811679
1682 - `"claude-fable-5"`
1680 Powerful intelligence for long-running agents and coding
16831681
1684 Next generation of intelligence for the hardest knowledge work and coding problems
1682 - `"claude-opus-4-8"`
16851683
1686 - `"claude-opus-5"`
1684 Powerful intelligence for long-running agents and coding
16871685
1688 Powerful intelligence for long-running agents and coding
1686 - `"claude-opus-4-7"`
16891687
1690 - `"claude-opus-4-8"`
1688 Powerful intelligence for long-running agents and coding
16911689
1692 Powerful intelligence for long-running agents and coding
1690 - `"claude-opus-4-6"`
16931691
1694 - `"claude-opus-4-7"`
1692 Powerful intelligence for long-running agents and coding
16951693
1696 Powerful intelligence for long-running agents and coding
1694 - `"claude-sonnet-4-6"`
16971695
1698 - `"claude-opus-4-6"`
1696 Best combination of speed and intelligence
16991697
1700 Powerful intelligence for long-running agents and coding
1698 - `"claude-haiku-4-5"`
17011699
1702 - `"claude-sonnet-4-6"`
1700 Fastest model with near-frontier intelligence
17031701
1704 Best combination of speed and intelligence
1702 - `"claude-haiku-4-5-20251001"`
17051703
1706 - `"claude-haiku-4-5"`
1704 Fastest model with near-frontier intelligence
17071705
1708 Fastest model with near-frontier intelligence
1706 - `"claude-opus-4-5"`
17091707
1710 - `"claude-haiku-4-5-20251001"`
1708 Powerful intelligence for long-running agents and coding
17111709
1712 Fastest model with near-frontier intelligence
1710 - `"claude-opus-4-5-20251101"`
17131711
1714 - `"claude-opus-4-5"`
1712 Powerful intelligence for long-running agents and coding
17151713
1716 Powerful intelligence for long-running agents and coding
1714 - `"claude-sonnet-4-5"`
17171715
1718 - `"claude-opus-4-5-20251101"`
1716 High-performance model for agents and coding
17191717
1720 Powerful intelligence for long-running agents and coding
1718 - `"claude-sonnet-4-5-20250929"`
17211719
1722 - `"claude-sonnet-4-5"`
1723
1724 High-performance model for agents and coding
1725
1726 - `"claude-sonnet-4-5-20250929"`
1727
1728 High-performance model for agents and coding
1720 High-performance model for agents and coding
17291721
17301722 - `string`
17311723
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