diff --git a/src/vs/editor/common/languages.ts b/src/vs/editor/common/languages.ts
index 57f11ed3e4e..4d157bf5788 100644
--- a/src/vs/editor/common/languages.ts
+++ b/src/vs/editor/common/languages.ts
@@ -547,6 +547,22 @@ export interface CompletionList {
 	duration?: number;
 }
 
+/**
+ * Info provided on partial acceptance.
+ */
+export interface PartialAcceptInfo {
+	kind: PartialAcceptTriggerKind;
+}
+
+/**
+ * How a partial acceptance was triggered.
+ */
+export const enum PartialAcceptTriggerKind {
+	Word = 0,
+	Line = 1,
+	Suggest = 2,
+}
+
 /**
  * How a suggest provider was triggered.
  */
@@ -718,7 +734,7 @@ export interface InlineCompletionsProvider<T extends InlineCompletions = InlineC
 	/**
 	 * Will be called when an item is partially accepted.
 	 */
-	handlePartialAccept?(completions: T, item: T['items'][number], acceptedCharacters: number): void;
+	handlePartialAccept?(completions: T, item: T['items'][number], acceptedCharacters: number, info: PartialAcceptInfo): void;
 
 	/**
 	 * Will be called when a completions list is no longer in use and can be garbage-collected.
diff --git a/src/vs/editor/common/standalone/standaloneEnums.ts b/src/vs/editor/common/standalone/standaloneEnums.ts
index 26e9ad27095..1e8882ea0bc 100644
--- a/src/vs/editor/common/standalone/standaloneEnums.ts
+++ b/src/vs/editor/common/standalone/standaloneEnums.ts
@@ -740,6 +740,15 @@ export enum OverviewRulerLane {
 	Full = 7
 }
 
+/**
+ * How a partial acceptance was triggered.
+ */
+export enum PartialAcceptTriggerKind {
+	Word = 0,
+	Line = 1,
+	Suggest = 2
+}
+
 export enum PositionAffinity {
 	/**
 	 * Prefers the left most position.
diff --git a/src/vs/editor/contrib/inlineCompletions/browser/inlineCompletionsModel.ts b/src/vs/editor/contrib/inlineCompletions/browser/inlineCompletionsModel.ts
index 006c9873c52..5b26d770005 100644
--- a/src/vs/editor/contrib/inlineCompletions/browser/inlineCompletionsModel.ts
+++ b/src/vs/editor/contrib/inlineCompletions/browser/inlineCompletionsModel.ts
@@ -14,7 +14,7 @@ import { EditOperation } from 'vs/editor/common/core/editOperation';
 import { Position } from 'vs/editor/common/core/position';
 import { Range } from 'vs/editor/common/core/range';
 import { Selection } from 'vs/editor/common/core/selection';
-import { InlineCompletionContext, InlineCompletionTriggerKind } from 'vs/editor/common/languages';
+import { InlineCompletionContext, InlineCompletionTriggerKind, PartialAcceptTriggerKind } from 'vs/editor/common/languages';
 import { ILanguageConfigurationService } from 'vs/editor/common/languages/languageConfigurationRegistry';
 import { EndOfLinePreference, ITextModel } from 'vs/editor/common/model';
 import { IFeatureDebounceInformation } from 'vs/editor/common/services/languageFeatureDebounce';
@@ -379,7 +379,7 @@ export class InlineCompletionsModel extends Disposable {
 				}
 			}
 			return acceptUntilIndexExclusive;
-		});
+		}, PartialAcceptTriggerKind.Word);
 	}
 
 	public async acceptNextLine(editor: ICodeEditor): Promise<void> {
@@ -389,10 +389,10 @@ export class InlineCompletionsModel extends Disposable {
 				return m.index + 1;
 			}
 			return text.length;
-		});
+		}, PartialAcceptTriggerKind.Line);
 	}
 
-	private async _acceptNext(editor: ICodeEditor, getAcceptUntilIndex: (position: Position, text: string) => number): Promise<void> {
+	private async _acceptNext(editor: ICodeEditor, getAcceptUntilIndex: (position: Position, text: string) => number, kind: PartialAcceptTriggerKind): Promise<void> {
 		if (editor.getModel() !== this.textModel) {
 			throw new BugIndicatingError();
 		}
@@ -448,6 +448,9 @@ export class InlineCompletionsModel extends Disposable {
 					completion.source.inlineCompletions,
 					completion.sourceInlineCompletion,
 					text.length,
+					{
+						kind,
+					}
 				);
 			}
 		} finally {
@@ -465,6 +468,9 @@ export class InlineCompletionsModel extends Disposable {
 			inlineCompletion.source.inlineCompletions,
 			inlineCompletion.sourceInlineCompletion,
 			itemEdit.text.length,
+			{
+				kind: PartialAcceptTriggerKind.Suggest,
+			}
 		);
 	}
 }
diff --git a/src/vs/editor/standalone/browser/standaloneLanguages.ts b/src/vs/editor/standalone/browser/standaloneLanguages.ts
index 8466fbf9f99..5ade938e7c2 100644
--- a/src/vs/editor/standalone/browser/standaloneLanguages.ts
+++ b/src/vs/editor/standalone/browser/standaloneLanguages.ts
@@ -809,6 +809,7 @@ export function createMonacoLanguagesAPI(): typeof monaco.languages {
 		InlineEditTriggerKind: standaloneEnums.InlineEditTriggerKind,
 		CodeActionTriggerType: standaloneEnums.CodeActionTriggerType,
 		NewSymbolNameTag: standaloneEnums.NewSymbolNameTag,
+		PartialAcceptTriggerKind: standaloneEnums.PartialAcceptTriggerKind,
 
 		// classes
 		FoldingRangeKind: languages.FoldingRangeKind,
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index c094df337af..3391b58aa2e 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -6956,6 +6956,22 @@ declare namespace monaco.languages {
 		dispose?(): void;
 	}
 
+	/**
+	 * Info provided on partial acceptance.
+	 */
+	export interface PartialAcceptInfo {
+		kind: PartialAcceptTriggerKind;
+	}
+
+	/**
+	 * How a partial acceptance was triggered.
+	 */
+	export enum PartialAcceptTriggerKind {
+		Word = 0,
+		Line = 1,
+		Suggest = 2
+	}
+
 	/**
 	 * How a suggest provider was triggered.
 	 */
@@ -7102,7 +7118,7 @@ declare namespace monaco.languages {
 		/**
 		 * Will be called when an item is partially accepted.
 		 */
-		handlePartialAccept?(completions: T, item: T['items'][number], acceptedCharacters: number): void;
+		handlePartialAccept?(completions: T, item: T['items'][number], acceptedCharacters: number, info: PartialAcceptInfo): void;
 		/**
 		 * Will be called when a completions list is no longer in use and can be garbage-collected.
 		*/
diff --git a/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts b/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts
index 80d13f11362..b7ecbfdb9a2 100644
--- a/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts
+++ b/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts
@@ -601,9 +601,9 @@ export class MainThreadLanguageFeatures extends Disposable implements MainThread
 					await this._proxy.$handleInlineCompletionDidShow(handle, completions.pid, item.idx, updatedInsertText);
 				}
 			},
-			handlePartialAccept: async (completions, item, acceptedCharacters): Promise<void> => {
+			handlePartialAccept: async (completions, item, acceptedCharacters, info: languages.PartialAcceptInfo): Promise<void> => {
 				if (supportsHandleEvents) {
-					await this._proxy.$handleInlineCompletionPartialAccept(handle, completions.pid, item.idx, acceptedCharacters);
+					await this._proxy.$handleInlineCompletionPartialAccept(handle, completions.pid, item.idx, acceptedCharacters, info);
 				}
 			},
 			freeInlineCompletions: (completions: IdentifiableInlineCompletions): void => {
diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index 7344da8ee5e..9ac80463738 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -1677,6 +1677,7 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 			ThreadFocus: extHostTypes.ThreadFocus,
 			RelatedInformationType: extHostTypes.RelatedInformationType,
 			SpeechToTextStatus: extHostTypes.SpeechToTextStatus,
+			PartialAcceptTriggerKind: extHostTypes.PartialAcceptTriggerKind,
 			KeywordRecognitionStatus: extHostTypes.KeywordRecognitionStatus,
 			ChatResponseMarkdownPart: extHostTypes.ChatResponseMarkdownPart,
 			ChatResponseFileTreePart: extHostTypes.ChatResponseFileTreePart,
diff --git a/src/vs/workbench/api/common/extHost.protocol.ts b/src/vs/workbench/api/common/extHost.protocol.ts
index d7e5580443b..575c58a4d24 100644
--- a/src/vs/workbench/api/common/extHost.protocol.ts
+++ b/src/vs/workbench/api/common/extHost.protocol.ts
@@ -2128,7 +2128,7 @@ export interface ExtHostLanguageFeaturesShape {
 	$releaseCompletionItems(handle: number, id: number): void;
 	$provideInlineCompletions(handle: number, resource: UriComponents, position: IPosition, context: languages.InlineCompletionContext, token: CancellationToken): Promise<IdentifiableInlineCompletions | undefined>;
 	$handleInlineCompletionDidShow(handle: number, pid: number, idx: number, updatedInsertText: string): void;
-	$handleInlineCompletionPartialAccept(handle: number, pid: number, idx: number, acceptedCharacters: number): void;
+	$handleInlineCompletionPartialAccept(handle: number, pid: number, idx: number, acceptedCharacters: number, info: languages.PartialAcceptInfo): void;
 	$freeInlineCompletionsList(handle: number, pid: number): void;
 	$provideSignatureHelp(handle: number, resource: UriComponents, position: IPosition, context: languages.SignatureHelpContext, token: CancellationToken): Promise<ISignatureHelpDto | undefined>;
 	$releaseSignatureHelp(handle: number, id: number): void;
diff --git a/src/vs/workbench/api/common/extHostLanguageFeatures.ts b/src/vs/workbench/api/common/extHostLanguageFeatures.ts
index d6bc4f793aa..1c532bcc8ee 100644
--- a/src/vs/workbench/api/common/extHostLanguageFeatures.ts
+++ b/src/vs/workbench/api/common/extHostLanguageFeatures.ts
@@ -1230,7 +1230,7 @@ class InlineCompletionAdapterBase {
 
 	handleDidShowCompletionItem(pid: number, idx: number, updatedInsertText: string): void { }
 
-	handlePartialAccept(pid: number, idx: number, acceptedCharacters: number): void { }
+	handlePartialAccept(pid: number, idx: number, acceptedCharacters: number, info: languages.PartialAcceptInfo): void { }
 }
 
 class InlineCompletionAdapter extends InlineCompletionAdapterBase {
@@ -1345,11 +1345,12 @@ class InlineCompletionAdapter extends InlineCompletionAdapterBase {
 		}
 	}
 
-	override handlePartialAccept(pid: number, idx: number, acceptedCharacters: number): void {
+	override handlePartialAccept(pid: number, idx: number, acceptedCharacters: number, info: languages.PartialAcceptInfo): void {
 		const completionItem = this._references.get(pid)?.items[idx];
 		if (completionItem) {
 			if (this._provider.handleDidPartiallyAcceptCompletionItem && this._isAdditionsProposedApiEnabled) {
 				this._provider.handleDidPartiallyAcceptCompletionItem(completionItem, acceptedCharacters);
+				this._provider.handleDidPartiallyAcceptCompletionItem(completionItem, typeConvert.PartialAcceptInfo.to(info));
 			}
 		}
 	}
@@ -2489,9 +2490,9 @@ export class ExtHostLanguageFeatures implements extHostProtocol.ExtHostLanguageF
 		}, undefined, undefined);
 	}
 
-	$handleInlineCompletionPartialAccept(handle: number, pid: number, idx: number, acceptedCharacters: number): void {
+	$handleInlineCompletionPartialAccept(handle: number, pid: number, idx: number, acceptedCharacters: number, info: languages.PartialAcceptInfo): void {
 		this._withAdapter(handle, InlineCompletionAdapterBase, async adapter => {
-			adapter.handlePartialAccept(pid, idx, acceptedCharacters);
+			adapter.handlePartialAccept(pid, idx, acceptedCharacters, info);
 		}, undefined, undefined);
 	}
 
diff --git a/src/vs/workbench/api/common/extHostTypeConverters.ts b/src/vs/workbench/api/common/extHostTypeConverters.ts
index 68cbe330492..13077072ff3 100644
--- a/src/vs/workbench/api/common/extHostTypeConverters.ts
+++ b/src/vs/workbench/api/common/extHostTypeConverters.ts
@@ -2672,6 +2672,29 @@ export namespace TerminalQuickFix {
 	}
 }
 
+export namespace PartialAcceptInfo {
+	export function to(info: languages.PartialAcceptInfo): types.PartialAcceptInfo {
+		return {
+			kind: PartialAcceptTriggerKind.to(info.kind),
+		};
+	}
+}
+
+export namespace PartialAcceptTriggerKind {
+	export function to(kind: languages.PartialAcceptTriggerKind): types.PartialAcceptTriggerKind {
+		switch (kind) {
+			case languages.PartialAcceptTriggerKind.Word:
+				return types.PartialAcceptTriggerKind.Word;
+			case languages.PartialAcceptTriggerKind.Line:
+				return types.PartialAcceptTriggerKind.Line;
+			case languages.PartialAcceptTriggerKind.Suggest:
+				return types.PartialAcceptTriggerKind.Suggest;
+			default:
+				return types.PartialAcceptTriggerKind.Unknown;
+		}
+	}
+}
+
 export namespace DebugTreeItem {
 	export function from(item: vscode.DebugTreeItem, id: number): IDebugVisualizationTreeItem {
 		return {
diff --git a/src/vs/workbench/api/common/extHostTypes.ts b/src/vs/workbench/api/common/extHostTypes.ts
index 2e1ff171d1f..8660835e2d6 100644
--- a/src/vs/workbench/api/common/extHostTypes.ts
+++ b/src/vs/workbench/api/common/extHostTypes.ts
@@ -1795,6 +1795,17 @@ export class InlineSuggestionList implements vscode.InlineCompletionList {
 	}
 }
 
+export interface PartialAcceptInfo {
+	kind: PartialAcceptTriggerKind;
+}
+
+export enum PartialAcceptTriggerKind {
+	Unknown = 0,
+	Word = 1,
+	Line = 2,
+	Suggest = 3,
+}
+
 export enum ViewColumn {
 	Active = -1,
 	Beside = -2,
diff --git a/src/vscode-dts/vscode.proposed.inlineCompletionsAdditions.d.ts b/src/vscode-dts/vscode.proposed.inlineCompletionsAdditions.d.ts
index 9e3ead9be40..2715014a0a8 100644
--- a/src/vscode-dts/vscode.proposed.inlineCompletionsAdditions.d.ts
+++ b/src/vscode-dts/vscode.proposed.inlineCompletionsAdditions.d.ts
@@ -53,6 +53,24 @@ declare module 'vscode' {
 		 */
 		// eslint-disable-next-line local/vscode-dts-provider-naming
 		handleDidPartiallyAcceptCompletionItem?(completionItem: InlineCompletionItem, acceptedLength: number): void;
+
+		/**
+		 * Is called when an inline completion item was accepted partially.
+		 * @param info Additional info for the partial accepted trigger.
+		 */
+		// eslint-disable-next-line local/vscode-dts-provider-naming
+		handleDidPartiallyAcceptCompletionItem?(completionItem: InlineCompletionItem, info: PartialAcceptInfo): void;
+	}
+
+	export interface PartialAcceptInfo {
+		kind: PartialAcceptTriggerKind;
+	}
+
+	export enum PartialAcceptTriggerKind {
+		Unknown = 0,
+		Word = 1,
+		Line = 2,
+		Suggest = 3,
 	}
 
 	// When finalizing `commands`, make sure to add a corresponding constructor parameter.