diff --git a/packages/tui/src/mini/footer.command.tsx b/packages/tui/src/mini/footer.command.tsx
index 3861fd587dc..2c58dd124e3 100644
--- a/packages/tui/src/mini/footer.command.tsx
+++ b/packages/tui/src/mini/footer.command.tsx
@@ -407,7 +407,7 @@ export function RunCommandMenuBody(props: {
         name: "compact",
         display: "Compact session",
         footer: "/compact",
-        keywords: "compact summarize session context",
+        keywords: "compact session context",
       },
       {
         action: "slash",
diff --git a/packages/tui/src/mini/footer.prompt.tsx b/packages/tui/src/mini/footer.prompt.tsx
index 090cfc02879..6a1a6ff7eb7 100644
--- a/packages/tui/src/mini/footer.prompt.tsx
+++ b/packages/tui/src/mini/footer.prompt.tsx
@@ -406,7 +406,7 @@ export function createPromptState(input: PromptInput): PromptState {
         kind: "slash",
         name: "compact",
         display: "/compact",
-        description: "summarize the session to reduce context usage",
+        description: "compact older session context to free space",
       } satisfies SlashOption,
       { kind: "slash", name: "exit", display: "/exit", description: "close OpenCode" } satisfies SlashOption,
     ]
diff --git a/packages/tui/src/mini/prompt.shared.ts b/packages/tui/src/mini/prompt.shared.ts
index be1e24db867..b1951dc9723 100644
--- a/packages/tui/src/mini/prompt.shared.ts
+++ b/packages/tui/src/mini/prompt.shared.ts
@@ -54,8 +54,7 @@ export function isNewCommand(input: string): boolean {
 }
 
 export function isCompactCommand(input: string): boolean {
-  const text = input.trim().toLowerCase()
-  return text === "/compact" || text === "/summarize"
+  return input.trim().toLowerCase() === "/compact"
 }
 
 export function createPromptHistory(items?: RunPrompt[]): PromptHistoryState {
diff --git a/packages/tui/src/routes/session/index.tsx b/packages/tui/src/routes/session/index.tsx
index ec037110ef2..6a295389a39 100644
--- a/packages/tui/src/routes/session/index.tsx
+++ b/packages/tui/src/routes/session/index.tsx
@@ -635,7 +635,6 @@ export function Session() {
       group: "Session",
       slash: {
         name: "compact",
-        aliases: ["summarize"],
       },
       run: () => {
         void client.api.session.compact({ sessionID: route.sessionID })
diff --git a/packages/tui/test/mini/prompt.shared.test.ts b/packages/tui/test/mini/prompt.shared.test.ts
index 748228ede60..cec46600b75 100644
--- a/packages/tui/test/mini/prompt.shared.test.ts
+++ b/packages/tui/test/mini/prompt.shared.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, test } from "bun:test"
 import {
   createPromptHistory,
+  isCompactCommand,
   isExitCommand,
   isNewCommand,
   movePromptHistory,
@@ -98,4 +99,10 @@ describe("run prompt shared", () => {
     expect(isNewCommand(" /NEW ")).toBe(true)
     expect(isNewCommand("/new now")).toBe(false)
   })
+
+  test("recognizes only the compact command", () => {
+    expect(isCompactCommand("/compact")).toBe(true)
+    expect(isCompactCommand(" /COMPACT ")).toBe(true)
+    expect(isCompactCommand("/summarize")).toBe(false)
+  })
 })
diff --git a/packages/tui/test/mini/runtime.queue.test.ts b/packages/tui/test/mini/runtime.queue.test.ts
index c9a73e5adcf..d5499ec00d7 100644
--- a/packages/tui/test/mini/runtime.queue.test.ts
+++ b/packages/tui/test/mini/runtime.queue.test.ts
@@ -80,7 +80,7 @@ describe("run runtime queue", () => {
     ])
   })
 
-  test.each(["/compact", "/summarize"])("treats %s as a local compaction command", async (command) => {
+  test("treats /compact as a local compaction command", async () => {
     const ui = createFooterApiFixture()
     const seen: string[] = []
     let compacted = 0
@@ -96,7 +96,7 @@ describe("run runtime queue", () => {
       },
     })
 
-    ui.submit(command)
+    ui.submit("/compact")
     ui.submit("hello")
     await task