diff --git a/CHANGELOG.md b/CHANGELOG.md
index e5e1b2f..bdb67d1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 - Adds support for deep links to comparisons. Deep links of this format take the form `vscode://eamodio.gitlens/r/{repoId}/compare/{ref1}[..|...]{ref2}?[url={remoteUrl}|path={repoPath}]` and open the comparison in the _Search & Compare_ view
   - Adds the `Share` submenu to the context menu for Comparison items in the _Search & Compare_ view with a new command `Copy Link to Comparison` to copy the deep link to that comparison to the clipboard
 - Adds experimental native fetch support (enabled by setting `gitlens.experimental.nativeGit` to `true` in settings) as a potential fix to some auth issues with GitLens git operations
+- Adds support for Anthropic's Claude 2 AI model
 
 ### Changed
 
diff --git a/package.json b/package.json
index f73416f..5275d81 100644
--- a/package.json
+++ b/package.json
@@ -2885,13 +2885,15 @@
 							"claude-v1",
 							"claude-v1-100k",
 							"claude-instant-v1",
-							"claude-instant-v1-100k"
+							"claude-instant-v1-100k",
+							"claude-2"
 						],
 						"enumDescriptions": [
 							"Claude v1",
 							"Claude v1 100k",
 							"Claude Instant v1",
-							"Claude Instant v1 100k"
+							"Claude Instant v1 100k",
+							"Claude 2"
 						],
 						"markdownDescription": "Specifies the Anthropic model to use for GitLens' experimental AI features",
 						"scope": "window",
diff --git a/src/ai/anthropicProvider.ts b/src/ai/anthropicProvider.ts
index 7e0def8..1b4efe6 100644
--- a/src/ai/anthropicProvider.ts
+++ b/src/ai/anthropicProvider.ts
@@ -69,8 +69,17 @@ export class AnthropicProvider implements AIProvider {
 		});
 
 		if (!rsp.ok) {
+			let json;
+			try {
+				json = (await rsp.json()) as { error: { type: string; message: string } } | undefined;
+			} catch {}
+
 			debugger;
-			throw new Error(`Unable to generate commit message: ${rsp.status}: ${rsp.statusText}`);
+			throw new Error(
+				`Unable to generate commit message: (${this.name}:${rsp.status}) ${
+					json?.error.message || rsp.statusText
+				})`,
+			);
 		}
 
 		const data: AnthropicCompletionResponse = await rsp.json();
@@ -114,14 +123,22 @@ export class AnthropicProvider implements AIProvider {
 				'Content-Type': 'application/json',
 				Client: 'anthropic-typescript/0.4.3',
 				'X-API-Key': apiKey,
+				'anthropic-version': '2023-06-01',
 			},
 			method: 'POST',
 			body: JSON.stringify(request),
 		});
 
 		if (!rsp.ok) {
+			let json;
+			try {
+				json = (await rsp.json()) as { error: { type: string; message: string } } | undefined;
+			} catch {}
+
 			debugger;
-			throw new Error(`Unable to explain commit: ${rsp.status}: ${rsp.statusText}`);
+			throw new Error(
+				`Unable to explain commit: (${this.name}:${rsp.status}) ${json?.error.message || rsp.statusText})`,
+			);
 		}
 
 		const data: AnthropicCompletionResponse = await rsp.json();
@@ -194,12 +211,17 @@ async function getApiKey(storage: Storage): Promise<string | undefined> {
 }
 
 function getMaxCharacters(model: AnthropicModels): number {
-	if (model === 'claude-v1-100k' || model === 'claude-instant-v1-100k') {
+	if (model === 'claude-2' || model === 'claude-v1-100k' || model === 'claude-instant-v1-100k') {
 		return 135000;
 	}
 	return 12000;
 }
-export type AnthropicModels = 'claude-v1' | 'claude-v1-100k' | 'claude-instant-v1' | 'claude-instant-v1-100k';
+export type AnthropicModels =
+	| 'claude-v1'
+	| 'claude-v1-100k'
+	| 'claude-instant-v1'
+	| 'claude-instant-v1-100k'
+	| 'claude-2';
 
 interface AnthropicCompletionRequest {
 	model: string;
diff --git a/src/quickpicks/aiModelPicker.ts b/src/quickpicks/aiModelPicker.ts
index 78a6565..f82e487 100644
--- a/src/quickpicks/aiModelPicker.ts
+++ b/src/quickpicks/aiModelPicker.ts
@@ -35,6 +35,7 @@ export async function showAIModelPicker(): Promise<ModelQuickPickItem | undefine
 			provider: 'anthropic',
 			model: 'claude-instant-v1-100k',
 		},
+		{ label: 'Anthropic', description: 'Claude 2', provider: 'anthropic', model: 'claude-2' },
 	];
 
 	for (const item of items) {