From 1d14c33d43086617011ea448136fc991ff36e471 Mon Sep 17 00:00:00 2001
From: Roo Code <roomote@roocode.com>
Date: Wed, 15 Oct 2025 14:46:50 +0000
Subject: [PATCH] feat: enable 1M context window for Claude Sonnet 4 and 4.5 on
 Vertex AI

- Update claude-sonnet-4@20250514 contextWindow from 200k to 1M
- Update claude-sonnet-4-5@20250929 contextWindow from 200k to 1M

This aligns with Google Vertex AI documentation showing GA support
for 1M context on Sonnet 4 and beta support for Sonnet 4.5

Fixes #8671
---
 packages/types/src/providers/vertex.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/types/src/providers/vertex.ts b/packages/types/src/providers/vertex.ts
index f03d0b5805..bdef22a6a1 100644
--- a/packages/types/src/providers/vertex.ts
+++ b/packages/types/src/providers/vertex.ts
@@ -165,7 +165,7 @@ export const vertexModels = {
 	},
 	"claude-sonnet-4@20250514": {
 		maxTokens: 8192,
-		contextWindow: 200_000,
+		contextWindow: 1_000_000,
 		supportsImages: true,
 		supportsComputerUse: true,
 		supportsPromptCache: true,
@@ -177,7 +177,7 @@ export const vertexModels = {
 	},
 	"claude-sonnet-4-5@20250929": {
 		maxTokens: 8192,
-		contextWindow: 200_000,
+		contextWindow: 1_000_000,
 		supportsImages: true,
 		supportsComputerUse: true,
 		supportsPromptCache: true,