feat: add Claude Opus 4.6 model support

Add claude-opus-4.6 as the new default model, mapping to Augment's
opus4.6 backend. Previous claude-opus-4.5 remains available.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: hletrd

AGENTS.md

@@ -15,7 +15,7 @@ AI assistant context and working notes for the augment-opencode repository.
 **Auggie** refers to the Augment Code CLI tool (`@augmentcode/auggie`), which provides:
 - Authentication with Augment Code services (`auggie login`)
 - SDK for programmatic access to Augment Code's API
-- Access to Claude models (Opus 4.5, Sonnet 4.5, Haiku 4.5) and GPT models (5.x series)
+- Access to Claude models (Opus 4.6, Opus 4.5, Sonnet 4.5, Haiku 4.5) and GPT models (5.x series)
 
 This repository wraps the Auggie SDK to provide an OpenAI-compatible HTTP API.
 
@@ -48,7 +48,8 @@ OpenCode/Client → HTTP (localhost:8765) → server.ts → Auggie SDK → Augme
 
 | Model ID | Backend | Context | Output | Use Case |
 |----------|---------|---------|--------|----------|
-| `claude-opus-4.5` | Augment | 200K | 32K | Default, most capable |
+| `claude-opus-4.6` | Augment | 200K | 32K | Default, most capable |
+| `claude-opus-4.5` | Augment | 200K | 32K | Previous Opus generation |
 | `claude-sonnet-4.5` | Augment | 200K | 16K | Balanced performance |
 | `claude-sonnet-4` | Augment | 200K | 16K | Previous generation |
 | `claude-haiku-4.5` | Augment | 200K | 8K | Fastest, lightweight |

CLAUDE.md

@@ -46,7 +46,8 @@ OpenCode/Client → HTTP Request → src/server.ts (builds to dist/server.js) 
 
 | OpenCode Model ID | Auggie Model ID | Context | Output | Description |
 |-------------------|-----------------|---------|--------|-------------|
-| `claude-opus-4.5` | `opus4.5` | 200K | 32K | **Default**, most capable |
+| `claude-opus-4.6` | `opus4.6` | 200K | 32K | **Default**, most capable |
+| `claude-opus-4.5` | `opus4.5` | 200K | 32K | Previous Opus generation |
 | `claude-sonnet-4.5` | `sonnet4.5` | 200K | 16K | Balanced performance |
 | `claude-sonnet-4` | `sonnet4` | 200K | 16K | Previous generation |
 | `claude-haiku-4.5` | `haiku4.5` | 200K | 8K | Fastest, lightweight |
@@ -84,10 +85,11 @@ curl -X POST http://localhost:8765/v1/chat/completions \
 ### Model Mapping (src/server.ts)
 
 ```javascript
-const DEFAULT_MODEL = 'claude-opus-4.5';
+const DEFAULT_MODEL = 'claude-opus-4.6';
 
 const MODEL_MAP = {
   // Claude models
+  'claude-opus-4.6': { auggie: 'opus4.6', name: 'Claude Opus 4.6', context: 200000, output: 32000 },
   'claude-opus-4.5': { auggie: 'opus4.5', name: 'Claude Opus 4.5', context: 200000, output: 32000 },
   'claude-sonnet-4.5': { auggie: 'sonnet4.5', name: 'Claude Sonnet 4.5', context: 200000, output: 16000 },
   'claude-sonnet-4': { auggie: 'sonnet4', name: 'Claude Sonnet 4', context: 200000, output: 16000 },
@@ -161,7 +163,7 @@ Provider uses `@ai-sdk/openai-compatible` npm package:
       "name": "Augment Code",
       "options": { "baseURL": "http://localhost:8765/v1" },
       "models": {
-        "claude-opus-4.5": { "name": "Claude Opus 4.5 (Augment)", "limit": { "context": 200000, "output": 32000 } }
+        "claude-opus-4.6": { "name": "Claude Opus 4.6 (Augment)", "limit": { "context": 200000, "output": 32000 } }
       }
     }
   }

README.md

@@ -8,7 +8,7 @@ This wrapper allows you to use [OpenCode](https://opencode.ai) or any other Open
 
 - **OpenAI-compatible API** - Drop-in replacement for OpenAI API
 - **Real-time streaming** - True SSE streaming with all ACP protocol update types
-- **Multiple models** - Claude Opus 4.5, Sonnet 4.5, Sonnet 4, Haiku 4.5, GPT-5.x
+- **Multiple models** - Claude Opus 4.6, Opus 4.5, Sonnet 4.5, Sonnet 4, Haiku 4.5, GPT-5.x
 - **Automatic retry** - Exponential backoff for rate limits and transient errors
 - **Request validation** - Validates message format and model names
 - **Graceful shutdown** - Clean shutdown with connection draining
@@ -87,6 +87,10 @@ Add the following to your OpenCode config file at `~/.config/opencode/opencode.j
         "baseURL": "http://localhost:8765/v1"
       },
       "models": {
+        "claude-opus-4.6": {
+          "name": "Claude Opus 4.6 (Augment)",
+          "limit": { "context": 200000, "output": 32000 }
+        },
         "claude-opus-4.5": {
           "name": "Claude Opus 4.5 (Augment)",
           "limit": { "context": 200000, "output": 32000 }
@@ -149,11 +153,11 @@ curl http://localhost:8765/health
 # List models
 curl http://localhost:8765/v1/models
 
-# Chat completion (default: claude-opus-4.5)
+# Chat completion (default: claude-opus-4.6)
 curl http://localhost:8765/v1/chat/completions \
   -H "Content-Type: application/json" \
   -d '{
-    "model": "claude-opus-4.5",
+    "model": "claude-opus-4.6",
     "messages": [{"role": "user", "content": "Hello!"}]
   }'
 
@@ -169,7 +173,7 @@ curl http://localhost:8765/v1/chat/completions \
 curl http://localhost:8765/v1/chat/completions \
   -H "Content-Type: application/json" \
   -d '{
-    "model": "claude-opus-4.5",
+    "model": "claude-opus-4.6",
     "messages": [{"role": "user", "content": "Hello!"}],
     "stream": true
   }'
@@ -192,7 +196,8 @@ All models are available simultaneously. Select the model in your API request:
 
 | Model ID | Auggie ID | Description |
 |----------|-----------|-------------|
-| `claude-opus-4.5` | `opus4.5` | Default, most capable (200K context, 32K output) |
+| `claude-opus-4.6` | `opus4.6` | Default, most capable (200K context, 32K output) |
+| `claude-opus-4.5` | `opus4.5` | Previous Opus generation (200K context, 32K output) |
 | `claude-sonnet-4.5` | `sonnet4.5` | Balanced performance (200K context, 16K output) |
 | `claude-sonnet-4` | `sonnet4` | Previous generation (200K context, 16K output) |
 | `claude-haiku-4.5` | `haiku4.5` | Fastest, lightweight (200K context, 8K output) |
@@ -279,11 +284,11 @@ npm start
 
 1. Ensure the wrapper server is running
 2. Check that `~/.config/opencode/opencode.json` contains the `augment` provider configuration
-3. Run `/models` in OpenCode and look for `augment/claude-opus-4.5` (or other models)
+3. Run `/models` in OpenCode and look for `augment/claude-opus-4.6` (or other models)
 
 ### Wrong model being used
 
-Check the server logs. If you see "Unknown model" warnings, ensure you're using the correct model ID (e.g., `claude-opus-4.5`, not `opus4.5`).
+Check the server logs. If you see "Unknown model" warnings, ensure you're using the correct model ID (e.g., `claude-opus-4.6`, not `opus4.6`).
 
 ## Documentation
 

setup.sh

@@ -90,6 +90,10 @@ config.provider.augment = {
     baseURL: 'http://localhost:8765/v1'
   },
   models: {
+    'claude-opus-4.6': {
+      name: 'Claude Opus 4.6 (Augment)',
+      limit: { context: 200000, output: 32000 }
+    },
     'claude-opus-4.5': {
       name: 'Claude Opus 4.5 (Augment)',
       limit: { context: 200000, output: 32000 }
@@ -139,6 +143,10 @@ else
         "baseURL": "http://localhost:8765/v1"
       },
       "models": {
+        "claude-opus-4.6": {
+          "name": "Claude Opus 4.6 (Augment)",
+          "limit": { "context": 200000, "output": 32000 }
+        },
         "claude-opus-4.5": {
           "name": "Claude Opus 4.5 (Augment)",
           "limit": { "context": 200000, "output": 32000 }
@@ -186,7 +194,8 @@ echo -e "  npm start"
 echo ""
 echo -e "${BLUE}Available models in OpenCode:${NC}"
 echo -e "  Claude models:"
-echo -e "  - augment/claude-opus-4.5     (default, recommended)"
+echo -e "  - augment/claude-opus-4.6     (default, recommended)"
+echo -e "  - augment/claude-opus-4.5"
 echo -e "  - augment/claude-sonnet-4.5"
 echo -e "  - augment/claude-sonnet-4"
 echo -e "  - augment/claude-haiku-4.5"

src/models.json

@@ -1,7 +1,13 @@
 {
   "version": "1.1.0",
-  "defaultModel": "claude-opus-4.5",
+  "defaultModel": "claude-opus-4.6",
   "models": {
+    "claude-opus-4.6": {
+      "auggie": "opus4.6",
+      "name": "Claude Opus 4.6",
+      "context": 200000,
+      "output": 32000
+    },
     "claude-opus-4.5": {
       "auggie": "opus4.5",
       "name": "Claude Opus 4.5",