diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8f3ac4941..d144d5b71 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,8 +15,12 @@
 - Resume pen drawing from existing open path endpoints — click an endpoint to continue the curve
 - Close open paths by dragging one endpoint to the other
 - Align selected anchor points relative to each other in vector edit mode — the standard alignment buttons in the position panel now operate on selected vertices when 2 or more are selected
-- Add GLM-5.1 model id to the z.ai provider
-- Add MiniMax M2.7 model id to the minimax provider
+- Unified core IO format registry — `.fig` is now modeled as the native document format alongside shared export adapters for PNG, JPG, WEBP, SVG, and JSX
+- Export selection or current page as `.fig` from the app export UI and app menu
+- New CLI commands: `open-pencil convert` for document conversion and `open-pencil formats` to inspect readable/writable/exportable formats
+- CLI export now supports `.fig` output and routes PNG/JPG/WEBP/SVG/JSX/`.fig` through the shared IO layer
+- `Open…` now supports `.pen` Pencil documents through the shared document reader pipeline while keeping `.fig` as the native save format
+- Update built-in Z.ai and MiniMax model lists — Z.ai now uses the Anthropic-compatible endpoint for GLM coding models, adds GLM-5.1, and MiniMax adds M2.7 / M2.7-highspeed
 
 ### Fixes
 
diff --git a/packages/core/src/constants.ts b/packages/core/src/constants.ts
index 09763119e..a10c58b35 100644
--- a/packages/core/src/constants.ts
+++ b/packages/core/src/constants.ts
@@ -197,10 +197,10 @@ export const AI_PROVIDERS: AIProviderDef[] = [
     id: 'zai',
     name: 'Z.ai',
     keyPlaceholder: 'API key',
-    keyURL: 'https://docs.z.ai/api-reference/introduction',
+    keyURL: 'https://docs.z.ai/devpack/quick-start',
     defaultModel: 'glm-5.1',
     models: [
-      { id: 'glm-5.1', name: 'GLM-5.1' },
+      { id: 'glm-5.1', name: 'GLM-5.1', tag: 'Best' },
       { id: 'glm-5', name: 'GLM-5' },
       { id: 'glm-5-code', name: 'GLM-5-Code' },
       { id: 'glm-4.7', name: 'GLM-4.7' },
@@ -220,7 +220,7 @@ export const AI_PROVIDERS: AIProviderDef[] = [
     name: 'MiniMax',
     keyPlaceholder: 'API key',
     keyURL: 'https://platform.minimax.io/user-center/basic-information/interface-key',
-    defaultModel: 'MiniMax-M2.5',
+    defaultModel: 'MiniMax-M2.7',
     models: [
       { id: 'MiniMax-M2.7', name: 'MiniMax-M2.7', tag: 'Best' },
       { id: 'MiniMax-M2.7-highspeed', name: 'MiniMax-M2.7-highspeed', tag: 'Fast' },
diff --git a/src/composables/use-chat.ts b/src/composables/use-chat.ts
index 6ce103857..b2588af5e 100644
--- a/src/composables/use-chat.ts
+++ b/src/composables/use-chat.ts
@@ -147,11 +147,11 @@ function createModel(): LanguageModel {
       return google(effectiveModelID)
     }
     case 'zai': {
-      const zai = createOpenAI({
+      const zai = createAnthropic({
         apiKey: key,
-        baseURL: 'https://api.z.ai/api/paas/v4'
+        baseURL: 'https://api.z.ai/api/anthropic'
       })
-      return zai.chat(effectiveModelID)
+      return zai(effectiveModelID)
     }
     case 'minimax': {
       const minimax = createOpenAI({