@@ -560,6 +560,80 @@ func (r *ThreadDeleted) UnmarshalJSON(data []byte) error {
560560 return apijson .UnmarshalRoot (data , r )
561561}
562562
563+ // Controls for how a thread will be truncated prior to the run. Use this to
564+ // control the intial context window of the run.
565+ type TruncationObject struct {
566+ // The truncation strategy to use for the thread. The default is `auto`. If set to
567+ // `last_messages`, the thread will be truncated to the n most recent messages in
568+ // the thread. When set to `auto`, messages in the middle of the thread will be
569+ // dropped to fit the context length of the model, `max_prompt_tokens`.
570+ //
571+ // Any of "auto", "last_messages".
572+ Type TruncationObjectType `json:"type,required"`
573+ // The number of most recent messages from the thread when constructing the context
574+ // for the run.
575+ LastMessages int64 `json:"last_messages,nullable"`
576+ // JSON contains metadata for fields, check presence with [respjson.Field.Valid].
577+ JSON struct {
578+ Type respjson.Field
579+ LastMessages respjson.Field
580+ ExtraFields map [string ]respjson.Field
581+ raw string
582+ } `json:"-"`
583+ }
584+
585+ // Returns the unmodified JSON received from the API
586+ func (r TruncationObject ) RawJSON () string { return r .JSON .raw }
587+ func (r * TruncationObject ) UnmarshalJSON (data []byte ) error {
588+ return apijson .UnmarshalRoot (data , r )
589+ }
590+
591+ // ToParam converts this TruncationObject to a TruncationObjectParam.
592+ //
593+ // Warning: the fields of the param type will not be present. ToParam should only
594+ // be used at the last possible moment before sending a request. Test for this with
595+ // TruncationObjectParam.Overrides()
596+ func (r TruncationObject ) ToParam () TruncationObjectParam {
597+ return param.Override [TruncationObjectParam ](r .RawJSON ())
598+ }
599+
600+ // The truncation strategy to use for the thread. The default is `auto`. If set to
601+ // `last_messages`, the thread will be truncated to the n most recent messages in
602+ // the thread. When set to `auto`, messages in the middle of the thread will be
603+ // dropped to fit the context length of the model, `max_prompt_tokens`.
604+ type TruncationObjectType string
605+
606+ const (
607+ TruncationObjectTypeAuto TruncationObjectType = "auto"
608+ TruncationObjectTypeLastMessages TruncationObjectType = "last_messages"
609+ )
610+
611+ // Controls for how a thread will be truncated prior to the run. Use this to
612+ // control the intial context window of the run.
613+ //
614+ // The property Type is required.
615+ type TruncationObjectParam struct {
616+ // The truncation strategy to use for the thread. The default is `auto`. If set to
617+ // `last_messages`, the thread will be truncated to the n most recent messages in
618+ // the thread. When set to `auto`, messages in the middle of the thread will be
619+ // dropped to fit the context length of the model, `max_prompt_tokens`.
620+ //
621+ // Any of "auto", "last_messages".
622+ Type TruncationObjectType `json:"type,omitzero,required"`
623+ // The number of most recent messages from the thread when constructing the context
624+ // for the run.
625+ LastMessages param.Opt [int64 ] `json:"last_messages,omitzero"`
626+ paramObj
627+ }
628+
629+ func (r TruncationObjectParam ) MarshalJSON () (data []byte , err error ) {
630+ type shadow TruncationObjectParam
631+ return param .MarshalObject (r , (* shadow )(& r ))
632+ }
633+ func (r * TruncationObjectParam ) UnmarshalJSON (data []byte ) error {
634+ return apijson .UnmarshalRoot (data , r )
635+ }
636+
563637type BetaThreadNewParams struct {
564638 // Set of 16 key-value pairs that can be attached to an object. This can be useful
565639 // for storing additional information about the object in a structured format, and
@@ -1057,9 +1131,6 @@ type BetaThreadNewAndRunParams struct {
10571131 // Override the tools the assistant can use for this run. This is useful for
10581132 // modifying the behavior on a per-run basis.
10591133 Tools []AssistantToolUnionParam `json:"tools,omitzero"`
1060- // Controls for how a thread will be truncated prior to the run. Use this to
1061- // control the intial context window of the run.
1062- TruncationStrategy BetaThreadNewAndRunParamsTruncationStrategy `json:"truncation_strategy,omitzero"`
10631134 // Specifies the format that the model must output. Compatible with
10641135 // [GPT-4o](https://platform.openai.com/docs/models#gpt-4o),
10651136 // [GPT-4 Turbo](https://platform.openai.com/docs/models#gpt-4-turbo-and-gpt-4),
@@ -1092,6 +1163,9 @@ type BetaThreadNewAndRunParams struct {
10921163 // `{"type": "function", "function": {"name": "my_function"}}` forces the model to
10931164 // call that tool.
10941165 ToolChoice AssistantToolChoiceOptionUnionParam `json:"tool_choice,omitzero"`
1166+ // Controls for how a thread will be truncated prior to the run. Use this to
1167+ // control the intial context window of the run.
1168+ TruncationStrategy TruncationObjectParam `json:"truncation_strategy,omitzero"`
10951169 paramObj
10961170}
10971171
@@ -1523,35 +1597,3 @@ func (r BetaThreadNewAndRunParamsToolResourcesFileSearch) MarshalJSON() (data []
15231597func (r * BetaThreadNewAndRunParamsToolResourcesFileSearch ) UnmarshalJSON (data []byte ) error {
15241598 return apijson .UnmarshalRoot (data , r )
15251599}
1526-
1527- // Controls for how a thread will be truncated prior to the run. Use this to
1528- // control the intial context window of the run.
1529- //
1530- // The property Type is required.
1531- type BetaThreadNewAndRunParamsTruncationStrategy struct {
1532- // The truncation strategy to use for the thread. The default is `auto`. If set to
1533- // `last_messages`, the thread will be truncated to the n most recent messages in
1534- // the thread. When set to `auto`, messages in the middle of the thread will be
1535- // dropped to fit the context length of the model, `max_prompt_tokens`.
1536- //
1537- // Any of "auto", "last_messages".
1538- Type string `json:"type,omitzero,required"`
1539- // The number of most recent messages from the thread when constructing the context
1540- // for the run.
1541- LastMessages param.Opt [int64 ] `json:"last_messages,omitzero"`
1542- paramObj
1543- }
1544-
1545- func (r BetaThreadNewAndRunParamsTruncationStrategy ) MarshalJSON () (data []byte , err error ) {
1546- type shadow BetaThreadNewAndRunParamsTruncationStrategy
1547- return param .MarshalObject (r , (* shadow )(& r ))
1548- }
1549- func (r * BetaThreadNewAndRunParamsTruncationStrategy ) UnmarshalJSON (data []byte ) error {
1550- return apijson .UnmarshalRoot (data , r )
1551- }
1552-
1553- func init () {
1554- apijson .RegisterFieldValidator [BetaThreadNewAndRunParamsTruncationStrategy ](
1555- "type" , "auto" , "last_messages" ,
1556- )
1557- }
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