Get Session Thread changedapi/beta/sessions/threads/retrieve
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+70added
Lines−66removed
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171
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First seen
14 Aug 2026
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Recorded edits12to this page, all time
The whole hunk
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172172 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
173173
174 - `string`
174 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
175175
176 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
177
178176 The model that will power your agent.
179177
180178 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
181179
180 - `"claude-sonnet-5-5"`
181
182 Efficient model for coding and agents
183
182184 - `"claude-opus-5-5"`
183185
184186 Powerful intelligence for coding, knowledge work, and long-running agents
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189191
190192 - `"claude-sonnet-5"`
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192 High-performance model for coding and agents
194 Efficient model for coding and agents
193195
194196 - `"claude-fable-5"`
195197
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238240 - `"claude-sonnet-4-5-20250929"`
239241
240242 High-performance model for agents and coding
243
244 - `string`
241245
242246 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
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