diff --git a/packages/cli/src/ui/components/InputPrompt.test.tsx b/packages/cli/src/ui/components/InputPrompt.test.tsx
index 3608f00e3d..4e7e10b34c 100644
--- a/packages/cli/src/ui/components/InputPrompt.test.tsx
+++ b/packages/cli/src/ui/components/InputPrompt.test.tsx
@@ -5332,6 +5332,34 @@ describe('InputPrompt', () => {
       });
     });
   });
+
+  describe('terminal buffer rendering', () => {
+    it('does not clip the last char of a visual line whose width equals inputWidth', async () => {
+      const fullLine = '1234567890'; // 10 chars, exactly props.inputWidth
+      props.inputWidth = 10;
+      props.suggestionsWidth = 10;
+      vi.spyOn(props.config, 'getUseTerminalBuffer').mockReturnValue(true);
+      mockBuffer.text = fullLine;
+      mockBuffer.lines = [fullLine];
+      mockBuffer.allVisualLines = [fullLine];
+      mockBuffer.viewportVisualLines = [fullLine];
+      mockBuffer.visualToLogicalMap = [[0, 0]];
+      mockBuffer.visualToTransformedMap = [0];
+      mockBuffer.transformationsByLine = [[]];
+      mockBuffer.cursor = [0, fullLine.length];
+      mockBuffer.visualCursor = [0, fullLine.length];
+
+      const { lastFrame, unmount } = await renderWithProviders(
+        <TestInputPrompt {...props} />,
+        { uiActions },
+      );
+
+      await waitFor(() => {
+        expect(clean(lastFrame())).toContain(fullLine);
+      });
+      unmount();
+    });
+  });
 });
 
 function clean(str: string | undefined): string {
diff --git a/packages/cli/src/ui/components/InputPrompt.tsx b/packages/cli/src/ui/components/InputPrompt.tsx
index 67fefe0656..cd37e56abd 100644
--- a/packages/cli/src/ui/components/InputPrompt.tsx
+++ b/packages/cli/src/ui/components/InputPrompt.tsx
@@ -93,6 +93,8 @@ import { useIsHelpDismissKey } from '../utils/shortcutsHelp.js';
 import { useRepeatedKeyPress } from '../hooks/useRepeatedKeyPress.js';
 import { useKeyMatchers } from '../hooks/useKeyMatchers.js';
 
+const SCROLLBAR_GUTTER_WIDTH = 1;
+
 /**
  * Returns if the terminal can be trusted to handle paste events atomically
  * rather than potentially sending multiple paste events separated by line
@@ -1868,7 +1870,7 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
                         ? `line-${item.absoluteVisualIdx}`
                         : `ghost-${item.index}`
                     }
-                    width={inputWidth}
+                    width={inputWidth + SCROLLBAR_GUTTER_WIDTH}
                     backgroundColor={listBackgroundColor}
                     containerHeight={Math.min(
                       buffer.viewportHeight,
diff --git a/packages/cli/src/ui/components/__snapshots__/InputPrompt-InputPrompt-Highlighting-and-Cursor-Display-single-line-scenarios-should-display-cursor-correctly-at-the-end-of-the-line-2.snap.svg b/packages/cli/src/ui/components/__snapshots__/InputPrompt-InputPrompt-Highlighting-and-Cursor-Display-single-line-scenarios-should-display-cursor-correctly-at-the-end-of-the-line-2.snap.svg
new file mode 100644
index 0000000000..2f9e66a77a
--- /dev/null
+++ b/packages/cli/src/ui/components/__snapshots__/InputPrompt-InputPrompt-Highlighting-and-Cursor-Display-single-line-scenarios-should-display-cursor-correctly-at-the-end-of-the-line-2.snap.svg
@@ -0,0 +1,11 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="920" height="71" viewBox="0 0 920 71">
+  <style>
+    text { font-family: Consolas, "Courier New", monospace; font-size: 14px; dominant-baseline: text-before-edge; white-space: pre; }
+  </style>
+  <rect width="920" height="71" fill="#000000" />
+  <g transform="translate(10, 10)">
+    <text x="0" y="2" fill="#ffffff" textLength="900" lengthAdjust="spacingAndGlyphs">────────────────────────────────────────────────────────────────────────────────────────────────────</text>
+    <text x="0" y="19" fill="#ffffff" textLength="900" lengthAdjust="spacingAndGlyphs"> &gt; hello                                                                                            </text>
+    <text x="0" y="36" fill="#ffffff" textLength="900" lengthAdjust="spacingAndGlyphs">────────────────────────────────────────────────────────────────────────────────────────────────────</text>
+  </g>
+</svg>
\ No newline at end of file
diff --git a/packages/cli/src/ui/components/__snapshots__/InputPrompt.test.tsx.snap b/packages/cli/src/ui/components/__snapshots__/InputPrompt.test.tsx.snap
index db449ce4d7..04cba9385d 100644
--- a/packages/cli/src/ui/components/__snapshots__/InputPrompt.test.tsx.snap
+++ b/packages/cli/src/ui/components/__snapshots__/InputPrompt.test.tsx.snap
@@ -60,6 +60,12 @@ exports[`InputPrompt > Highlighting and Cursor Display > single-line scenarios >
 ────────────────────────────────────────────────────────────────────────────────────────────────────"
 `;
 
+exports[`InputPrompt > Highlighting and Cursor Display > single-line scenarios > should display cursor correctly 'at the end of the line' 2`] = `
+"────────────────────────────────────────────────────────────────────────────────────────────────────
+ > hello
+────────────────────────────────────────────────────────────────────────────────────────────────────"
+`;
+
 exports[`InputPrompt > Highlighting and Cursor Display > single-line scenarios > should display cursor correctly 'for multi-byte unicode characters' 1`] = `
 "────────────────────────────────────────────────────────────────────────────────────────────────────
  > hello 👍 world
@@ -168,6 +174,27 @@ exports[`InputPrompt > mouse interaction > should toggle paste expansion on doub
 "
 `;
 
+exports[`InputPrompt > mouse interaction > should toggle paste expansion on double-click 4`] = `
+"▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+ > [Pasted Text: 10 lines]
+▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+"
+`;
+
+exports[`InputPrompt > mouse interaction > should toggle paste expansion on double-click 5`] = `
+"▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+ > [Pasted Text: 10 lines]
+▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+"
+`;
+
+exports[`InputPrompt > mouse interaction > should toggle paste expansion on double-click 6`] = `
+"▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+ > [Pasted Text: 10 lines]
+▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+"
+`;
+
 exports[`InputPrompt > multiline rendering > should correctly render multiline input including blank lines 1`] = `
 "────────────────────────────────────────────────────────────────────────────────────────────────────
  > hello