diff --git a/packages/opencode/src/provider/models.ts b/packages/opencode/src/provider/models.ts
index 651584755b..a8b2445f16 100644
--- a/packages/opencode/src/provider/models.ts
+++ b/packages/opencode/src/provider/models.ts
@@ -69,7 +69,7 @@ export namespace ModelsDev {
       .object({
         npm: z.string().optional(),
         api: z.string().optional(),
-        shape: z.enum(["responses", "completions"]).optional(),
+        shape: z.string().optional(),
       })
       .optional(),
     variants: z.record(z.string(), z.record(z.string(), z.any())).optional(),
diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index e4fe155f44..9759bc316f 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -606,7 +606,7 @@ export namespace Provider {
         id: z.string(),
         url: z.string(),
         npm: z.string(),
-        shape: z.enum(["responses", "completions"]).optional(),
+        shape: z.string().optional(),
       }),
       name: z.string(),
       family: z.string().optional(),