The whole hunk
from line 16, old and new numbered
/
lines
from line 16
1616
1717 - `string`
1818
19 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 38 more`
19 - `"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more`
2020
2121 - `"message-batches-2024-09-24"`
2222
from line 100
100100
101101 - `"ce-user-management-2026-07-13"`
102102
103 - `"mid-conversation-output-config-2026-07-01"`
104
105 - `"thinking-binding-controls-2026-08-01"`
106
107 - `"mid-conversation-system-clear-at-2026-08-21"`
108
103109## Returns
104110
105111- `BetaManagedAgentsSession object`
from line 140
134140
135141 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
136142
137 - `"claude-sonnet-5" or "claude-fable-5" or "claude-opus-5" or 10 more`
143 - `"claude-fable-5-1" or "claude-sonnet-5" or "claude-fable-5" or 11 more`
138144
139145 The model that will power your agent.
140146
141147 See [models](https://docs.anthropic.com/en/docs/models-overview) for additional details and options.
142148
149 - `"claude-fable-5-1"`
150
151 Frontier intelligence for ambitious tasks across coding, scientific discovery, and enterprise workflows
152
143153 - `"claude-sonnet-5"`
144154
145155 High-performance model for coding and agents
from line 698
688698
689699 - `outcome_evaluations: array of BetaManagedAgentsOutcomeEvaluationResource`
690700
691 Per-outcome evaluation state. One entry per define_outcome event sent to the session.
701 Per-outcome evaluation state. One entry per `define_outcome` event sent to the session.
692702
693703 - `completed_at: string or null`
694704
from line 712
702712
703713 - `explanation: string or null`
704714
705 Grader's verdict text from the most recent evaluation. For satisfied, explains why criteria are met; for needs_revision (intermediate), what's missing; for failed, why unrecoverable.
715 Grader's verdict text from the most recent evaluation. For `satisfied`, explains why criteria are met; for `needs_revision` (intermediate), what's missing; for `failed`, why unrecoverable.
706716
707717 - `iteration: number`
708718
from line 840
830840
831841 - `active_seconds: optional number`
832842
833 Cumulative time in seconds the session spent in running status. Excludes idle time.
843 Cumulative time in seconds the session spent in `running` status. Excludes idle time.
834844
835845 format: double
836846