diff --git a/src/cli.ts b/src/cli.ts
index 28cd138..d9fb2ac 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -1,6 +1,6 @@
 #!/usr/bin/env bun
 import { Command } from "commander";
-import { launchMultiModel } from "./core/open";
+import { openMultiModel } from "./core/open";
 import { closeMultiModel } from "./core/close";
 import { getBinaryName } from "./core/utils";
 
@@ -21,7 +21,7 @@ program
     try {
       const binaryName = options.binary || getBinaryName();
 
-      const result = await launchMultiModel({
+      const result = await openMultiModel({
         sessionName,
         models: options.models,
         binaryName,
diff --git a/src/core/index.ts b/src/core/index.ts
index 510547c..db81d7b 100644
--- a/src/core/index.ts
+++ b/src/core/index.ts
@@ -1,3 +1,3 @@
-export { launchMultiModel } from "./open";
+export { openMultiModel } from "./open";
 export { closeMultiModel } from "./close";
 export * from "./utils";
diff --git a/src/core/open.ts b/src/core/open.ts
index 0994746..f55f734 100644
--- a/src/core/open.ts
+++ b/src/core/open.ts
@@ -24,7 +24,7 @@ import {
  *
  * @example
  * ```ts
- * const result = await launchMultiModel({
+ * const result = await openMultiModel({
  *   sessionName: "compare",
  *   models: ["openai/gpt-5.2", "anthropic/claude-3-5-sonnet"],
  *   binaryName: "opencode",
@@ -34,7 +34,7 @@ import {
  * }
  * ```
  */
-export async function launchMultiModel(options: MultiModelOptions): Promise<MultiModelResult> {
+export async function openMultiModel(options: MultiModelOptions): Promise<MultiModelResult> {
   const sessionName = options.sessionName.trim();
   const safeSessionName = sanitizeName(sessionName);
   const models = normalizeModels(options.models);
diff --git a/src/tools/open.ts b/src/tools/open.ts
index 31ffdb3..dd3a88f 100644
--- a/src/tools/open.ts
+++ b/src/tools/open.ts
@@ -1,5 +1,5 @@
 import { tool } from "@opencode-ai/plugin";
-import { launchMultiModel } from "../core/open";
+import { openMultiModel } from "../core/open";
 import { getBinaryName } from "../core/utils";
 
 /**
@@ -20,7 +20,7 @@ export const openTool = tool({
   async execute(args, context) {
     const binaryName = getBinaryName();
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: args.sessionName,
       models: args.models,
       binaryName,
diff --git a/tests/multi-model.test.ts b/tests/multi-model.test.ts
index 4f82c2e..1f5e9b8 100644
--- a/tests/multi-model.test.ts
+++ b/tests/multi-model.test.ts
@@ -1,7 +1,7 @@
 import { expect, test, mock, spyOn, beforeEach, afterEach, describe } from "bun:test";
 import * as fs from "node:fs";
 import * as os from "node:os";
-import { launchMultiModel } from "../src/core/open";
+import { openMultiModel } from "../src/core/open";
 import {
   shellQuote,
   normalizeModels,
@@ -79,7 +79,7 @@ describe("multi-model launch", () => {
   });
 
   test("fails if session name is empty", async () => {
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "",
       models: ["openai/gpt-5.2"],
     });
@@ -90,7 +90,7 @@ describe("multi-model launch", () => {
   });
 
   test("fails if no models are provided", async () => {
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: [],
     });
@@ -101,7 +101,7 @@ describe("multi-model launch", () => {
   });
 
   test("fails if duplicate models are provided", async () => {
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2", "openai/gpt-5.2"],
     });
@@ -114,7 +114,7 @@ describe("multi-model launch", () => {
   test("fails if not inside a git repository", async () => {
     mockCommandResponses["git rev-parse --is-inside-work-tree"] = { ok: false, stdout: "", stderr: "not a git repo" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -127,7 +127,7 @@ describe("multi-model launch", () => {
   test("fails if tmux is not installed", async () => {
     mockCommandResponses["command -v tmux"] = { ok: false, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -143,7 +143,7 @@ describe("multi-model launch", () => {
   test("fails if opencode is not installed", async () => {
     mockCommandResponses["command -v opencode"] = { ok: false, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -158,7 +158,7 @@ describe("multi-model launch", () => {
   });
 
   test("fails if model name is not in allowlist", async () => {
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["invalid/model"],
     });
@@ -176,7 +176,7 @@ describe("multi-model launch", () => {
   test("fails if session already exists", async () => {
     mockCommandResponses["tmux has-session -t test-session"] = { ok: true, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -193,7 +193,7 @@ describe("multi-model launch", () => {
   });
 
   test("successfully plans and executes tmux launch with single model", async () => {
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -207,7 +207,7 @@ describe("multi-model launch", () => {
   test("successfully launches multiple models", async () => {
     mockCommandResponses["git show-ref --verify --quiet refs/heads/opencode/test-session/claude-3-5-sonnet"] = { ok: false, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2", "anthropic/claude-3-5-sonnet"],
     });
@@ -222,7 +222,7 @@ describe("multi-model launch", () => {
     mockCommandResponses["tmux has-session -t test session!"] = { ok: false, stdout: "", stderr: "" };
     mockCommandResponses["git show-ref --verify --quiet refs/heads/opencode/test-session/gpt-5-2"] = { ok: false, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test session!",
       models: ["openai/gpt-5.2"],
     });
@@ -237,7 +237,7 @@ describe("multi-model launch", () => {
     mockCommandResponses["git worktree remove -f /mock/home/.local/share/opencode/multi-model/test-session/gpt-5-2"] = { ok: true, stdout: "", stderr: "" };
     mockCommandResponses["git branch -D opencode/test-session/gpt-5-2"] = { ok: true, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -263,7 +263,7 @@ describe("multi-model launch", () => {
       return path.includes("test-session/gpt-5-2");
     });
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -282,7 +282,7 @@ describe("multi-model launch", () => {
   test("fails if git branch exists for first model", async () => {
     mockCommandResponses["git show-ref --verify --quiet refs/heads/opencode/test-session/gpt-5-2"] = { ok: true, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -302,7 +302,7 @@ describe("multi-model launch", () => {
   test("fails if git worktree add fails for first model", async () => {
     mockCommandResponses["git worktree add -b opencode/test-session/gpt-5-2 /mock/home/.local/share/opencode/multi-model/test-session/gpt-5-2"] = { ok: false, stdout: "", stderr: "git error" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2"],
     });
@@ -325,7 +325,7 @@ describe("multi-model launch", () => {
     mockCommandResponses["git show-ref --verify --quiet refs/heads/opencode/test-session/gpt-5-2"] = { ok: false, stdout: "", stderr: "" };
     mockCommandResponses["git show-ref --verify --quiet refs/heads/opencode/test-session/gpt-5-2-2"] = { ok: false, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: ["openai/gpt-5.2", "anthropic/gpt-5.2"],
     });
@@ -341,7 +341,7 @@ describe("multi-model launch", () => {
     mockCommandResponses["opencode models"] = { ok: true, stdout: longModel, stderr: "" };
     mockCommandResponses[`git show-ref --verify --quiet refs/heads/opencode/test-session/${longModel.slice(0, 24)}`] = { ok: false, stdout: "", stderr: "" };
 
-    const result = await launchMultiModel({
+    const result = await openMultiModel({
       sessionName: "test-session",
       models: [longModel],
     });