diff --git a/index.d.ts b/index.d.ts
index 45a2430..1e417ae 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -156,7 +156,9 @@ declare module "replicate" {
       identifier: `${string}/${string}` | `${string}/${string}:${string}`,
       options: {
         input: object;
-        wait?: boolean | number | { interval?: number };
+        wait?:
+          | { mode: "block"; interval?: number; timeout?: number }
+          | { mode: "poll"; interval?: number };
         webhook?: string;
         webhook_events_filter?: WebhookEventType[];
         signal?: AbortSignal;
@@ -189,7 +191,6 @@ declare module "replicate" {
     wait(
       prediction: Prediction,
       options?: {
-        mode?: "poll";
         interval?: number;
       },
       stop?: (prediction: Prediction) => Promise<boolean>
@@ -215,7 +216,7 @@ declare module "replicate" {
             stream?: boolean;
             webhook?: string;
             webhook_events_filter?: WebhookEventType[];
-            wait?: boolean | number | { mode?: "poll"; interval?: number };
+            wait?: number | boolean;
           }
         ): Promise<Prediction>;
       };
@@ -304,7 +305,7 @@ declare module "replicate" {
           stream?: boolean;
           webhook?: string;
           webhook_events_filter?: WebhookEventType[];
-          wait?: boolean | number | { mode?: "poll"; interval?: number };
+          wait?: boolean | number;
         } & ({ version: string } | { model: string })
       ): Promise<Prediction>;
       get(prediction_id: string): Promise<Prediction>;
diff --git a/index.js b/index.js
index ac4b815..a5755d9 100644
--- a/index.js
+++ b/index.js
@@ -48,7 +48,7 @@ class Replicate {
    * @param {string} options.userAgent - Identifier of your app
    * @param {string} [options.baseUrl] - Defaults to https://api.replicate.com/v1
    * @param {Function} [options.fetch] - Fetch function to use. Defaults to `globalThis.fetch`
-   * @param {boolean} [options.useFileOutput] - Set to `true` to return `FileOutput` objects from `run` instead of URLs, defaults to false.
+   * @param {boolean} [options.useFileOutput] - Set to `false` to disable `FileOutput` objects from `run` instead of URLs, defaults to true.
    * @param {"default" | "upload" | "data-uri"} [options.fileEncodingStrategy] - Determines the file encoding strategy to use
    */
   constructor(options = {}) {
@@ -60,7 +60,7 @@ class Replicate {
     this.baseUrl = options.baseUrl || "https://api.replicate.com/v1";
     this.fetch = options.fetch || globalThis.fetch;
     this.fileEncodingStrategy = options.fileEncodingStrategy || "default";
-    this.useFileOutput = options.useFileOutput || false;
+    this.useFileOutput = options.useFileOutput === false ? false : true;
 
     this.accounts = {
       current: accounts.current.bind(this),
@@ -133,8 +133,7 @@ class Replicate {
    * @param {string} ref - Required. The model version identifier in the format "owner/name" or "owner/name:version"
    * @param {object} options
    * @param {object} options.input - Required. An object with the model inputs
-   * @param {object} [options.wait] - Options for waiting for the prediction to finish. If `wait` is explicitly true, the function will block and wait for the prediction to finish.
-   * @param {number} [options.wait.interval] - Polling interval in milliseconds. Defaults to 500
+   * @param {{mode: "block", timeout?: number, interval?: number} | {mode: "poll", interval?: number }} [options.wait] - Options for waiting for the prediction to finish. If `wait` is explicitly true, the function will block and wait for the prediction to finish.
    * @param {string} [options.webhook] - An HTTPS URL for receiving a webhook when the prediction has new output
    * @param {string[]} [options.webhook_events_filter] - You can change which events trigger webhook requests by specifying webhook events (`start`|`output`|`logs`|`completed`)
    * @param {AbortSignal} [options.signal] - AbortSignal to cancel the prediction
@@ -144,23 +143,22 @@ class Replicate {
    * @returns {Promise<object>} - Resolves with the output of running the model
    */
   async run(ref, options, progress) {
-    const { wait, signal, ...data } = options;
+    const { wait = { mode: "block" }, signal, ...data } = options;
 
     const identifier = ModelVersionIdentifier.parse(ref);
-    const isBlocking = typeof wait === "boolean" || typeof wait === "number";
 
     let prediction;
     if (identifier.version) {
       prediction = await this.predictions.create({
         ...data,
         version: identifier.version,
-        wait: isBlocking ? wait : false,
+        wait: wait.mode === "block" ? wait.timeout ?? true : false,
       });
     } else if (identifier.owner && identifier.name) {
       prediction = await this.predictions.create({
         ...data,
         model: `${identifier.owner}/${identifier.name}`,
-        wait: isBlocking ? wait : false,
+        wait: wait.mode === "block" ? wait.timeout ?? true : false,
       });
     } else {
       throw new Error("Invalid model version identifier");
@@ -171,11 +169,11 @@ class Replicate {
       progress(prediction);
     }
 
-    const isDone = isBlocking && prediction.status !== "starting";
+    const isDone = wait.mode === "block" && prediction.status !== "starting";
     if (!isDone) {
       prediction = await this.wait(
         prediction,
-        isBlocking ? {} : wait,
+        { interval: wait.mode === "poll" ? wait.interval : undefined },
         async (updatedPrediction) => {
           // Call progress callback with the updated prediction object
           if (progress) {
diff --git a/index.test.ts b/index.test.ts
index 08fbf7c..c67035a 100644
--- a/index.test.ts
+++ b/index.test.ts
@@ -1310,7 +1310,7 @@ describe("Replicate client", () => {
         "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
         {
           input: { text: "Hello, world!" },
-          wait: { interval: 1 },
+          wait: { mode: "poll", interval: 1 },
         },
         (prediction) => {
           const progress = parseProgressFromLogs(prediction);
@@ -1402,7 +1402,7 @@ describe("Replicate client", () => {
         "replicate/hello-world",
         {
           input: { text: "Hello, world!" },
-          wait: { interval: 1 },
+          wait: { mode: "poll", interval: 1 },
         },
         progress
       );
@@ -1448,12 +1448,18 @@ describe("Replicate client", () => {
         });
 
       await expect(
-        client.run("a/b-1.0:abc123", { input: { text: "Hello, world!" } })
+        client.run("a/b-1.0:abc123", {
+          wait: { mode: "poll" },
+          input: { text: "Hello, world!" },
+        })
       ).resolves.not.toThrow();
     });
 
     test("Throws an error for invalid identifiers", async () => {
-      const options = { input: { text: "Hello, world!" } };
+      const options = {
+        wait: { mode: "poll" } as { mode: "poll" },
+        input: { text: "Hello, world!" },
+      };
 
       // @ts-expect-error
       await expect(client.run("owner:abc123", options)).rejects.toThrow();
@@ -1469,6 +1475,7 @@ describe("Replicate client", () => {
         await client.run(
           "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
           {
+            wait: { mode: "poll" },
             input: {
               text: "Alice",
             },
@@ -1492,7 +1499,7 @@ describe("Replicate client", () => {
         })
         .reply(201, {
           id: "ufawqhfynnddngldkgtslldrkq",
-          status: "processing",
+          status: "starting",
         })
         .persist()
         .get("/predictions/ufawqhfynnddngldkgtslldrkq")
@@ -1510,6 +1517,7 @@ describe("Replicate client", () => {
       const output = await client.run(
         "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
         {
+          wait: { mode: "poll" },
           input: { text: "Hello, world!" },
           signal,
         },
@@ -1524,7 +1532,7 @@ describe("Replicate client", () => {
       expect(onProgress).toHaveBeenNthCalledWith(
         1,
         expect.objectContaining({
-          status: "processing",
+          status: "starting",
         })
       );
       expect(onProgress).toHaveBeenNthCalledWith(
@@ -1580,6 +1588,7 @@ describe("Replicate client", () => {
       const output = (await client.run(
         "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
         {
+          wait: { mode: "poll" },
           input: { text: "Hello, world!" },
         }
       )) as FileOutput;
@@ -1631,6 +1640,7 @@ describe("Replicate client", () => {
       const output = (await client.run(
         "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
         {
+          wait: { mode: "poll" },
           input: { text: "Hello, world!" },
         }
       )) as unknown as string;
@@ -1677,6 +1687,7 @@ describe("Replicate client", () => {
       const [output] = (await client.run(
         "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
         {
+          wait: { mode: "poll" },
           input: { text: "Hello, world!" },
         }
       )) as FileOutput[];
@@ -1724,6 +1735,7 @@ describe("Replicate client", () => {
       const output = (await client.run(
         "owner/model:5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
         {
+          wait: { mode: "poll" },
           input: { text: "Hello, world!" },
         }
       )) as FileOutput;
diff --git a/package-lock.json b/package-lock.json
index f4c62d7..dd0188a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "replicate",
-  "version": "0.34.1",
+  "version": "1.0.0-beta.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "replicate",
-      "version": "0.34.1",
+      "version": "1.0.0-beta.1",
       "license": "Apache-2.0",
       "devDependencies": {
         "@biomejs/biome": "^1.4.1",
diff --git a/package.json b/package.json
index 1bc8a04..2572d52 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "replicate",
-  "version": "0.34.1",
+  "version": "1.0.0-beta.1",
   "description": "JavaScript client for Replicate",
   "repository": "github:replicate/replicate-javascript",
   "homepage": "https://github.com/replicate/replicate-javascript#readme",