From 031ea2feb0d1b5c61fd7516db10573e4622807fd Mon Sep 17 00:00:00 2001
From: Johnny Eric Amancio <johnnyeric@gmail.com>
Date: Mon, 10 Aug 2026 12:05:20 +0200
Subject: [PATCH] fix(provider): preserve base model variants alongside custom
 provider fallback

---
 packages/opencode/src/provider/provider.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index bc27c62e56f..b03526a5c93 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -1553,9 +1553,11 @@ const layer = Layer.effect(
               existingModel?.api.npm === m.api.npm
                 ? (existingModel.variants ?? ProviderTransform.variants(m))
                 : ProviderTransform.variants(m)
-            const generated = Object.keys(model.variants ?? {}).length
-              ? {}
-              : customProviderVariants(parsedModel, model.provider?.npm ?? provider.npm, baseGenerate)
+            const generated = customProviderVariants(
+              parsedModel,
+              model.provider?.npm ?? provider.npm,
+              baseGenerate,
+            )
             const merged = mergeDeep(generated, model.variants ?? {})
             // kilocode_change end
             parsedModel.variants = mapValues(