diff --git a/CHANGELOG.md b/CHANGELOG.md
index 54d52e3..fac4935 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,15 @@ and this project follows [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+### Fixed
+
+- Point the `responses` protocol at `@opencode/ai/providers/openai/responses`.
+  The previous `@opencode/ai/providers/openai-compatible/responses` path is not
+  part of OpenCode's bundled provider modules, so every request failed at model
+  init with `Cannot initialize <provider>/<model>: Cannot find package
+  '@opencode/ai' imported from /$bunfs/root/chunk-*.js`, even though the model
+  was listed in `/models`.
+
 ## [0.2.1] - 2026-09-16
 
 ### Fixed
diff --git a/src/index.test.ts b/src/index.test.ts
index b4d90f9..bf182b4 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -131,7 +131,7 @@ describe("plugin", () => {
       await plugin.setup(ctx)
 
       expect(registered[0]?.info.package).toBe(
-        "@opencode/ai/providers/openai-compatible/responses",
+        "@opencode/ai/providers/openai/responses",
       )
     } finally {
       globalThis.fetch = originalFetch
diff --git a/src/index.ts b/src/index.ts
index 4e3b33d..4aa2849 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,7 +16,13 @@ const DEFAULT_MODEL_METADATA_URL = "https://models.dev/api.json"
 const DEFAULT_REFRESH_MS = 5 * 60_000
 
 const CHAT_PACKAGE = "@opencode/ai/providers/openai-compatible"
-const RESPONSES_PACKAGE = "@opencode/ai/providers/openai-compatible/responses"
+// OpenCode resolves these package names from inside its own compiled bundle, not
+// from `node_modules`. Only the subpaths the bundle itself contains can be
+// imported, so Responses must use the OpenAI facade; the sibling
+// `openai-compatible-responses` module (and the `openai-compatible/responses`
+// subpath) are not bundled and fail at model init with `Cannot find package
+// '@opencode/ai' imported from /$bunfs/root/chunk-*.js`.
+const RESPONSES_PACKAGE = "@opencode/ai/providers/openai/responses"
 const MESSAGES_PACKAGE = "@opencode/ai/providers/anthropic"
 const ANTHROPIC_NPM = "@ai-sdk/anthropic"
 const DEFAULT_ANTHROPIC_EFFORTS = ["low", "medium", "high"] as const