diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ab1ff017..26aa9f7d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Bumped AI SDK and associated packages version. [#1126](https://github.com/sourcebot-dev/sourcebot/pull/1126)
 
+### Fixed
+- Fixed issue where claude-opus-4-7 was returning "error occurred "thinking.type.enabled" is not supported for this model". [#1123](https://github.com/sourcebot-dev/sourcebot/issues/1123)
+
 ## [4.16.9] - 2026-04-15
 
 ### Added
diff --git a/packages/web/src/features/chat/utils.server.ts b/packages/web/src/features/chat/utils.server.ts
index 4e7af7983..9d00459f4 100644
--- a/packages/web/src/features/chat/utils.server.ts
+++ b/packages/web/src/features/chat/utils.server.ts
@@ -210,11 +210,17 @@ export const getAISDKLanguageModelAndOptions = async (config: LanguageModel): Pr
                         : undefined,
                 });
 
+                const isAdaptiveThinkingSupported =
+                    modelId.startsWith('claude-opus-4-7');
+
                 return {
                     model: anthropic(modelId),
                     providerOptions: {
                         anthropic: {
-                            thinking: {
+                            thinking: isAdaptiveThinkingSupported ? {
+                                type: "adaptive",
+                                display: "summarized"
+                            } : {
                                 type: "enabled",
                                 budgetTokens: env.ANTHROPIC_THINKING_BUDGET_TOKENS,
                             }