diff --git a/libs/sdk-js/src/client.mts b/libs/sdk-js/src/client.mts
index 03024299d..459e9e6b1 100644
--- a/libs/sdk-js/src/client.mts
+++ b/libs/sdk-js/src/client.mts
@@ -133,6 +133,7 @@ export class CronsClient extends BaseClient {
       interrupt_before: payload?.interruptBefore,
       interrupt_after: payload?.interruptAfter,
       webhook: payload?.webhook,
+      multitask_strategy: payload?.multitaskStrategy,
     };
     return this.fetch<Run>(`/threads/${threadId}/runs/crons`, {
       method: "POST",
@@ -159,6 +160,7 @@ export class CronsClient extends BaseClient {
       interrupt_before: payload?.interruptBefore,
       interrupt_after: payload?.interruptAfter,
       webhook: payload?.webhook,
+      multitask_strategy: payload?.multitaskStrategy,
     };
     return this.fetch<Run>(`/runs/crons`, {
       method: "POST",
@@ -237,6 +239,8 @@ export class AssistantsClient extends BaseClient {
     graphId: string;
     config?: Config;
     metadata?: Metadata;
+    assistantId?: string;
+    ifExists?: OnConflictBehavior;
   }): Promise<Assistant> {
     return this.fetch<Assistant>("/assistants", {
       method: "POST",
@@ -244,6 +248,8 @@ export class AssistantsClient extends BaseClient {
         graph_id: payload.graphId,
         config: payload.config,
         metadata: payload.metadata,
+        assistant_id: payload.assistantId,
+        if_exists: payload.ifExists,
       },
     });
   }
@@ -257,7 +263,7 @@ export class AssistantsClient extends BaseClient {
   async update(
     assistantId: string,
     payload: {
-      graphId: string;
+      graphId?: string;
       config?: Config;
       metadata?: Metadata;
     },
@@ -518,7 +524,7 @@ export class RunsClient extends BaseClient {
   stream(
     threadId: null,
     assistantId: string,
-    payload?: Omit<RunsStreamPayload, "multitaskStrategy">,
+    payload?: Omit<RunsStreamPayload, "multitaskStrategy" | "onCompletion">,
   ): AsyncGenerator<{
     event: StreamEvent;
     data: any;
@@ -546,8 +552,6 @@ export class RunsClient extends BaseClient {
     payload?: RunsStreamPayload,
   ): AsyncGenerator<{
     event: StreamEvent;
-    // TODO: figure out a better way to
-    // type this without any
     data: any;
   }> {
     const json: Record<string, any> = {
@@ -560,10 +564,11 @@ export class RunsClient extends BaseClient {
       interrupt_before: payload?.interruptBefore,
       interrupt_after: payload?.interruptAfter,
       checkpoint_id: payload?.checkpointId,
+      webhook: payload?.webhook,
+      multitask_strategy: payload?.multitaskStrategy,
+      on_completion: payload?.onCompletion,
+      on_disconnect: payload?.onDisconnect,
     };
-    if (payload?.multitaskStrategy != null) {
-      json["multitask_strategy"] = payload?.multitaskStrategy;
-    }
 
     const endpoint =
       threadId == null ? `/runs/stream` : `/threads/${threadId}/runs/stream`;
@@ -640,10 +645,8 @@ export class RunsClient extends BaseClient {
       interrupt_after: payload?.interruptAfter,
       webhook: payload?.webhook,
       checkpoint_id: payload?.checkpointId,
+      multitask_strategy: payload?.multitaskStrategy,
     };
-    if (payload?.multitaskStrategy != null) {
-      json["multitask_strategy"] = payload?.multitaskStrategy;
-    }
     return this.fetch<Run>(`/threads/${threadId}/runs`, {
       method: "POST",
       json,
@@ -654,7 +657,7 @@ export class RunsClient extends BaseClient {
   async wait(
     threadId: null,
     assistantId: string,
-    payload?: Omit<RunsWaitPayload, "multitaskStrategy">,
+    payload?: Omit<RunsWaitPayload, "multitaskStrategy" | "onCompletion">,
   ): Promise<ThreadState["values"]>;
 
   async wait(
@@ -684,10 +687,11 @@ export class RunsClient extends BaseClient {
       interrupt_before: payload?.interruptBefore,
       interrupt_after: payload?.interruptAfter,
       checkpoint_id: payload?.checkpointId,
+      webhook: payload?.webhook,
+      multitask_strategy: payload?.multitaskStrategy,
+      on_completion: payload?.onCompletion,
+      on_disconnect: payload?.onDisconnect,
     };
-    if (payload?.multitaskStrategy != null) {
-      json["multitask_strategy"] = payload?.multitaskStrategy;
-    }
     const endpoint =
       threadId == null ? `/runs/wait` : `/threads/${threadId}/runs/wait`;
     return this.fetch<ThreadState["values"]>(endpoint, {
diff --git a/libs/sdk-js/src/types.mts b/libs/sdk-js/src/types.mts
index 872cc5723..2a5d6c4f1 100644
--- a/libs/sdk-js/src/types.mts
+++ b/libs/sdk-js/src/types.mts
@@ -3,6 +3,8 @@ import { Config, Metadata } from "./schema.js";
 export type StreamMode = "values" | "messages" | "updates" | "events" | "debug";
 export type MultitaskStrategy = "reject" | "interrupt" | "rollback" | "enqueue";
 export type OnConflictBehavior = "raise" | "do_nothing";
+export type OnCompletionBehavior = "complete" | "continue";
+export type DisconnectMode = "cancel" | "continue";
 export type StreamEvent =
   | "events"
   | "metadata"
@@ -61,6 +63,27 @@ interface RunsInvokePayload {
    * Abort controller signal to cancel the run.
    */
   signal?: AbortController["signal"];
+
+  /**
+   * Behavior to handle run completion. Only relevant if
+   * there is a pending/inflight run on the same thread. One of:
+   * - "complete": Complete the run.
+   * - "continue": Continue the run.
+   */
+  onCompletion?: OnCompletionBehavior;
+
+  /**
+   * Webhook to call when the run is complete.
+   */
+  webhook?: string;
+
+  /**
+   * Behavior to handle disconnection. Only relevant if
+   * there is a pending/inflight run on the same thread. One of:
+   * - "cancel": Cancel the run.
+   * - "continue": Continue the run.
+   */
+  onDisconnect?: DisconnectMode;
 }
 
 export interface RunsStreamPayload extends RunsInvokePayload {
@@ -82,12 +105,7 @@ export interface RunsStreamPayload extends RunsInvokePayload {
   feedbackKeys?: string[];
 }
 
-export interface RunsCreatePayload extends RunsInvokePayload {
-  /**
-   * Webhook to call when the run is complete.
-   */
-  webhook?: string;
-}
+export interface RunsCreatePayload extends RunsInvokePayload {}
 
 export interface CronsCreatePayload extends RunsCreatePayload {
   /**