Stream Session Thread Events changedapi/beta/sessions/threads/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
33
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 33, old and new numbered
/
from line 33
3333
3434 - `string`
3535
36 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 45 more`
36 - `"message-batches-2024-09-24"`
3737
38 - `"message-batches-2024-09-24"`
38 - `"prompt-caching-2024-07-31"`
3939
40 - `"prompt-caching-2024-07-31"`
40 - `"computer-use-2024-10-22"`
4141
42 - `"computer-use-2024-10-22"`
42 - `"computer-use-2025-01-24"`
4343
44 - `"computer-use-2025-01-24"`
44 - `"pdfs-2024-09-25"`
4545
46 - `"pdfs-2024-09-25"`
46 - `"token-counting-2024-11-01"`
4747
48 - `"token-counting-2024-11-01"`
48 - `"token-efficient-tools-2025-02-19"`
4949
50 - `"token-efficient-tools-2025-02-19"`
50 - `"output-128k-2025-02-19"`
5151
52 - `"output-128k-2025-02-19"`
52 - `"files-api-2025-04-14"`
5353
54 - `"files-api-2025-04-14"`
54 - `"mcp-client-2025-04-04"`
5555
56 - `"mcp-client-2025-04-04"`
56 - `"mcp-client-2025-11-20"`
5757
58 - `"mcp-client-2025-11-20"`
58 - `"dev-full-thinking-2025-05-14"`
5959
60 - `"dev-full-thinking-2025-05-14"`
60 - `"interleaved-thinking-2025-05-14"`
6161
62 - `"interleaved-thinking-2025-05-14"`
62 - `"code-execution-2025-05-22"`
6363
64 - `"code-execution-2025-05-22"`
64 - `"extended-cache-ttl-2025-04-11"`
6565
66 - `"extended-cache-ttl-2025-04-11"`
66 - `"context-1m-2025-08-07"`
6767
68 - `"context-1m-2025-08-07"`
68 - `"context-management-2025-06-27"`
6969
70 - `"context-management-2025-06-27"`
70 - `"model-context-window-exceeded-2025-08-26"`
7171
72 - `"model-context-window-exceeded-2025-08-26"`
72 - `"skills-2025-10-02"`
7373
74 - `"skills-2025-10-02"`
74 - `"fast-mode-2026-02-01"`
7575
76 - `"fast-mode-2026-02-01"`
76 - `"output-300k-2026-03-24"`
7777
78 - `"output-300k-2026-03-24"`
78 - `"user-profiles-2026-03-24"`
7979
80 - `"user-profiles-2026-03-24"`
80 - `"user-profiles-2026-08-18"`
8181
82 - `"user-profiles-2026-08-18"`
82 - `"user-profiles-2026-09-04"`
8383
84 - `"user-profiles-2026-09-04"`
84 - `"advisor-tool-2026-03-01"`
8585
86 - `"advisor-tool-2026-03-01"`
86 - `"managed-agents-2026-04-01"`
8787
88 - `"managed-agents-2026-04-01"`
88 - `"cache-diagnosis-2026-04-07"`
8989
90 - `"cache-diagnosis-2026-04-07"`
90 - `"dreaming-2026-04-21"`
9191
92 - `"dreaming-2026-04-21"`
92 - `"thinking-token-count-2026-05-13"`
9393
94 - `"thinking-token-count-2026-05-13"`
94 - `"server-side-fallback-2026-06-01"`
9595
96 - `"server-side-fallback-2026-06-01"`
96 - `"server-side-fallback-2026-07-01"`
9797
98 - `"server-side-fallback-2026-07-01"`
98 - `"fallback-credit-2026-06-01"`
9999
100 - `"fallback-credit-2026-06-01"`
100 - `"fallback-credit-2026-07-01"`
101101
102 - `"fallback-credit-2026-07-01"`
102 - `"agent-memory-2026-07-22"`
103103
104 - `"agent-memory-2026-07-22"`
104 - `"mid-conversation-tool-changes-2026-07-01"`
105105
106 - `"mid-conversation-tool-changes-2026-07-01"`
106 - `"compact-2026-01-12"`
107107
108 - `"compact-2026-01-12"`
108 - `"computer-use-2025-11-24"`
109109
110 - `"computer-use-2025-11-24"`
110 - `"mcp-tunnels-2026-06-22"`
111111
112 - `"mcp-tunnels-2026-06-22"`
112 - `"structured-outputs-2025-11-13"`
113113
114 - `"structured-outputs-2025-11-13"`
114 - `"task-budgets-2026-03-13"`
115115
116 - `"task-budgets-2026-03-13"`
116 - `"thinking-display-updates-2026-08-18"`
117117
118 - `"thinking-display-updates-2026-08-18"`
118 - `"ce-user-management-2026-07-13"`
119119
120 - `"ce-user-management-2026-07-13"`
120 - `"mid-conversation-output-config-2026-07-01"`
121121
122 - `"mid-conversation-output-config-2026-07-01"`
122 - `"thinking-binding-controls-2026-08-01"`
123123
124 - `"thinking-binding-controls-2026-08-01"`
124 - `"mid-conversation-system-clear-at-2026-08-21"`
125125
126 - `"mid-conversation-system-clear-at-2026-08-21"`
126 - `"compact-2026-09-04"`
127127
128 - `"compact-2026-09-04"`
128 - `"inline-tools-2026-09-15"`
129129
130 - `"inline-tools-2026-09-15"`
130 - `"mcp-client-2026-09-15"`
131131
132 - `"mcp-client-2026-09-15"`
133
134132- `"anthropic-workspace-id": optional string`
135133
136134 Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).
from line 1657
16591657
16601658 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
16611659
1662 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
1660 - `"claude-sonnet-5-5"`
16631661
1664 The model that will power your agent.
1662 Efficient model for coding and agents
16651663
1666 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
1664 - `"claude-opus-5-5"`
16671665
1668 - `"claude-sonnet-5-5"`
1666 Powerful intelligence for coding, knowledge work, and long-running agents
16691667
1670 Efficient model for coding and agents
1668 - `"claude-fable-5-1"`
16711669
1672 - `"claude-opus-5-5"`
1670 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
16731671
1674 Powerful intelligence for coding, knowledge work, and long-running agents
1672 - `"claude-sonnet-5"`
16751673
1676 - `"claude-fable-5-1"`
1674 Efficient model for coding and agents
16771675
1678 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
1676 - `"claude-fable-5"`
16791677
1680 - `"claude-sonnet-5"`
1678 Next generation of intelligence for the hardest knowledge work and coding problems
16811679
1682 Efficient model for coding and agents
1680 - `"claude-opus-5"`
16831681
1684 - `"claude-fable-5"`
1682 Powerful intelligence for long-running agents and coding
16851683
1686 Next generation of intelligence for the hardest knowledge work and coding problems
1684 - `"claude-opus-4-8"`
16871685
1688 - `"claude-opus-5"`
1686 Powerful intelligence for long-running agents and coding
16891687
1690 Powerful intelligence for long-running agents and coding
1688 - `"claude-opus-4-7"`
16911689
1692 - `"claude-opus-4-8"`
1690 Powerful intelligence for long-running agents and coding
16931691
1694 Powerful intelligence for long-running agents and coding
1692 - `"claude-opus-4-6"`
16951693
1696 - `"claude-opus-4-7"`
1694 Powerful intelligence for long-running agents and coding
16971695
1698 Powerful intelligence for long-running agents and coding
1696 - `"claude-sonnet-4-6"`
16991697
1700 - `"claude-opus-4-6"`
1698 Best combination of speed and intelligence
17011699
1702 Powerful intelligence for long-running agents and coding
1700 - `"claude-haiku-4-5"`
17031701
1704 - `"claude-sonnet-4-6"`
1702 Fastest model with near-frontier intelligence
17051703
1706 Best combination of speed and intelligence
1704 - `"claude-haiku-4-5-20251001"`
17071705
1708 - `"claude-haiku-4-5"`
1706 Fastest model with near-frontier intelligence
17091707
1710 Fastest model with near-frontier intelligence
1708 - `"claude-opus-4-5"`
17111709
1712 - `"claude-haiku-4-5-20251001"`
1710 Powerful intelligence for long-running agents and coding
17131711
1714 Fastest model with near-frontier intelligence
1712 - `"claude-opus-4-5-20251101"`
17151713
1716 - `"claude-opus-4-5"`
1714 Powerful intelligence for long-running agents and coding
17171715
1718 Powerful intelligence for long-running agents and coding
1716 - `"claude-sonnet-4-5"`
17191717
1720 - `"claude-opus-4-5-20251101"`
1718 High-performance model for agents and coding
17211719
1722 Powerful intelligence for long-running agents and coding
1720 - `"claude-sonnet-4-5-20250929"`
17231721
1724 - `"claude-sonnet-4-5"`
1725
1726 High-performance model for agents and coding
1727
1728 - `"claude-sonnet-4-5-20250929"`
1729
1730 High-performance model for agents and coding
1722 High-performance model for agents and coding
17311723
17321724 - `string`
17331725
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