Stream Session Thread Events changedapi/beta/sessions/threads/events/stream
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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1,659
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
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16601660 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
16611661
1662 - `string`
1662 - `"claude-sonnet-5-5" or "claude-opus-5-5" or "claude-fable-5-1" or 13 more`
16631663
1664 - `"claude-opus-5-5" or "claude-fable-5-1" or "claude-sonnet-5" or 12 more`
1665
16661664 The model that will power your agent.
16671665
16681666 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
16691667
1668 - `"claude-sonnet-5-5"`
1669
1670 Efficient model for coding and agents
1671
16701672 - `"claude-opus-5-5"`
16711673
16721674 Powerful intelligence for coding, knowledge work, and long-running agents
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16771679
16781680 - `"claude-sonnet-5"`
16791681
1680 High-performance model for coding and agents
1682 Efficient model for coding and agents
16811683
16821684 - `"claude-fable-5"`
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17261728 - `"claude-sonnet-4-5-20250929"`
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17281730 High-performance model for agents and coding
1731
1732 - `string`
17291733
17301734 - `effort: optional BetaManagedAgentsEffortLow or BetaManagedAgentsEffortMedium or BetaManagedAgentsEffortHigh or 2 more`
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