diff --git a/CHANGELOG.md b/CHANGELOG.md
index 855b8c110c..6fffa03f10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [Unreleased]
+
 ## [3.8.0] — 2026-05-06
 
 ### ✨ New Features
diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index bea18f734e..8e16c6a587 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -1,7 +1,7 @@
 openapi: 3.1.0
 info:
   title: OmniRoute API
-  version: 3.7.9
+  version: 3.8.0
   description: |
     OmniRoute is a local-first AI API proxy router. It provides an OpenAI-compatible
     endpoint that routes requests to multiple AI providers with load balancing,
diff --git a/open-sse/config/glmProvider.ts b/open-sse/config/glmProvider.ts
index f74d537dbe..8ca468ed7f 100644
--- a/open-sse/config/glmProvider.ts
+++ b/open-sse/config/glmProvider.ts
@@ -1,4 +1,4 @@
-import { ANTHROPIC_BETA_API_KEY, ANTHROPIC_VERSION_HEADER } from "./anthropicHeaders.ts";
+import { ANTHROPIC_VERSION_HEADER } from "./anthropicHeaders.ts";
 
 type JsonRecord = Record<string, unknown>;
 
@@ -6,7 +6,6 @@ export type GlmApiRegion = "international" | "china";
 
 export const GLM_SHARED_HEADERS = Object.freeze({
   "Anthropic-Version": ANTHROPIC_VERSION_HEADER,
-  "Anthropic-Beta": ANTHROPIC_BETA_API_KEY,
 });
 
 export const GLM_SHARED_MODELS = Object.freeze([
diff --git a/open-sse/config/providerRegistry.ts b/open-sse/config/providerRegistry.ts
index 33efd7cf3c..f860d8b535 100644
--- a/open-sse/config/providerRegistry.ts
+++ b/open-sse/config/providerRegistry.ts
@@ -130,7 +130,6 @@ const KIMI_CODING_SHARED = {
   authHeader: "x-api-key",
   headers: {
     "Anthropic-Version": ANTHROPIC_VERSION_HEADER,
-    "Anthropic-Beta": ANTHROPIC_BETA_API_KEY,
   },
   models: [
     { id: "kimi-k2.6", name: "Kimi K2.6" },
@@ -793,7 +792,6 @@ export const REGISTRY: Record<string, RegistryEntry> = {
     authHeader: "x-api-key",
     headers: {
       "Anthropic-Version": ANTHROPIC_VERSION_HEADER,
-      "Anthropic-Beta": ANTHROPIC_BETA_API_KEY,
     },
     models: [
       { id: "qwen3.5-plus", name: "Qwen3.5 Plus" },
@@ -818,7 +816,6 @@ export const REGISTRY: Record<string, RegistryEntry> = {
     authHeader: "x-api-key",
     headers: {
       "Anthropic-Version": ANTHROPIC_VERSION_HEADER,
-      "Anthropic-Beta": ANTHROPIC_BETA_API_KEY,
     },
     models: [
       { id: "glm-5.1", name: "GLM 5.1" },
@@ -939,7 +936,6 @@ export const REGISTRY: Record<string, RegistryEntry> = {
     authHeader: "bearer",
     headers: {
       "Anthropic-Version": ANTHROPIC_VERSION_HEADER,
-      "Anthropic-Beta": ANTHROPIC_BETA_API_KEY,
     },
     models: [
       // T12/T28: MiniMax default upgraded from M2.5 to M2.7
@@ -961,7 +957,6 @@ export const REGISTRY: Record<string, RegistryEntry> = {
     authHeader: "bearer",
     headers: {
       "Anthropic-Version": ANTHROPIC_VERSION_HEADER,
-      "Anthropic-Beta": ANTHROPIC_BETA_API_KEY,
     },
     models: [
       // Keep parity with minimax to ensure model discovery works for minimax-cn connections.