Threads changedapi/beta/sessions/threads
Nearest release: v2.1.284, published 8 hours before 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+4,822added
Lines−4,794removed
From line
183
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 183, old and new numbered
/
This page is larger than the 256 KiB this site keeps, so one side of the diff below stops where the stored text does.
from line 183
183183
184184 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
185185
186 - `string`
186 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
187187
188 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
189
190188 The model that will power your agent.
191189
192190 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
193191
192 - `"claude-sonnet-5-5"`
193
194 Efficient model for coding and agents
195
194196 - `"claude-opus-5-5"`
195197
196198 Powerful intelligence for coding, knowledge work, and long-running agents
from line 203
201203
202204 - `"claude-sonnet-5"`
203205
204 High-performance model for coding and agents
206 Efficient model for coding and agents
205207
206208 - `"claude-fable-5"`
207209
from line 253
251253
252254 High-performance model for agents and coding
253255
256 - `string`
257
254258 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
255259
256260 How hard Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied.
from line 1104
11001104
11011105 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
11021106
1103 - `string`
1107 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
11041108
1105 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
1106
11071109 The model that will power your agent.
11081110
11091111 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
11101112
1113 - `"claude-sonnet-5-5"`
1114
1115 Efficient model for coding and agents
1116
11111117 - `"claude-opus-5-5"`
11121118
11131119 Powerful intelligence for coding, knowledge work, and long-running agents
from line 1124
11181124
11191125 - `"claude-sonnet-5"`
11201126
1121 High-performance model for coding and agents
1127 Efficient model for coding and agents
11221128
11231129 - `"claude-fable-5"`
11241130
from line 1174
11681174
11691175 High-performance model for agents and coding
11701176
1177 - `string`
1178
11711179 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
11721180
11731181 How hard Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied.
from line 2016
20082016
20092017 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
20102018
2011 - `string`
2019 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
20122020
2013 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
2014
20152021 The model that will power your agent.
20162022
20172023 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
20182024
2025 - `"claude-sonnet-5-5"`
2026
2027 Efficient model for coding and agents
2028
20192029 - `"claude-opus-5-5"`
20202030
20212031 Powerful intelligence for coding, knowledge work, and long-running agents
from line 2036
20262036
20272037 - `"claude-sonnet-5"`
20282038
2029 High-performance model for coding and agents
2039 Efficient model for coding and agents
20302040
20312041 - `"claude-fable-5"`
20322042
from line 2086
20762086
20772087 High-performance model for agents and coding
20782088
2089 - `string`
2090
20792091 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
20802092
20812093 How hard Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied.
from line 2807
27952807
27962808 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
27972809
2798 - `string`
2810 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
27992811
2800 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
2801
28022812 The model that will power your agent.
28032813
28042814 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
28052815
2816 - `"claude-sonnet-5-5"`
2817
2818 Efficient model for coding and agents
2819
28062820 - `"claude-opus-5-5"`
28072821
28082822 Powerful intelligence for coding, knowledge work, and long-running agents
from line 2827
28132827
28142828 - `"claude-sonnet-5"`
28152829
2816 High-performance model for coding and agents
2830 Efficient model for coding and agents
28172831
28182832 - `"claude-fable-5"`
28192833
from line 2877
28632877
28642878 High-performance model for agents and coding
28652879
2880 - `string`
2881
28662882 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
28672883
28682884 How hard Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied.
from line 5087
50715087
50725088 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
50735089
5074 - `string`
5090 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
50755091
5076 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
5077
50785092 The model that will power your agent.
50795093
50805094 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
50815095
5096 - `"claude-sonnet-5-5"`
5097
5098 Efficient model for coding and agents
5099
50825100 - `"claude-opus-5-5"`
50835101
50845102 Powerful intelligence for coding, knowledge work, and long-running agents
from line 5107
50895107
50905108 - `"claude-sonnet-5"`
50915109
5092 High-performance model for coding and agents
5110 Efficient model for coding and agents
50935111
50945112 - `"claude-fable-5"`
50955113
from line 5157
51395157
51405158 High-performance model for agents and coding
51415159
5160 - `string`
5161
51425162 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
51435163
51445164 How hard Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied.
from line 7505
74857505
74867506 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
74877507
7488 - `string`
7508 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
74897509
7490 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
7491
74927510 The model that will power your agent.
74937511
74947512 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
74957513
7514 - `"claude-sonnet-5-5"`
7515
7516 Efficient model for coding and agents
7517
74967518 - `"claude-opus-5-5"`
74977519
74987520 Powerful intelligence for coding, knowledge work, and long-running agents
from line 7525
75037525
75047526 - `"claude-sonnet-5"`
75057527
7506 High-performance model for coding and agents
7528 Efficient model for coding and agents
75077529
75087530 - `"claude-fable-5"`
75097531
from line 7575
75537575
75547576 High-performance model for agents and coding
75557577
7578 - `string`
7579
75567580 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
75577581
75587582 How hard Claude works on each inference call. One of `low`, `medium`, `high`, `xhigh`, `max`. Always present; resolved to the per-model default at save time when not supplied.
from line 8349
83258349
83268350 - `"fallback-credit-2026-07-01"`
83278351
8328 - `"agent-memory-2026-07-22"`
8329
8330 - `"mid-conversation-tool-changes-2026-07-01"`
8331
8332 - `"compact-2026-01-12"`
8333
8334 - `"computer-use-2025-11-24"`
8335
8336 - `"mcp-tunnels-2026-06-22"`
8337
8338 - `"structured-outputs-2025-11-13"`
8339
8340 - `"task-budgets-2026-03-13"`
8341
8342 - `"thinking-display-updates-2026-08-18"`
8343
8344 - `"ce-user-management-2026-07-13"`
8345
8346 - `"mid-conversation-output-config-2026-07-01"`
8347
8348 - `"thinking-binding-controls-2026-08-01"`
8349
8350 - `"mid-conversation-system-clear-at-2026-08-21"`
8351
8352 - `"compact-2026-09-0
8352 - `"agent-memory-
No line in this hunk matches that.