From 4b161a61ac0c82655bc015bdd394e642c277b2c2 Mon Sep 17 00:00:00 2001
From: Noah Martino <noah@freedomgateway.llc>
Date: Wed, 15 Jul 2026 10:44:00 -0400
Subject: [PATCH] feat: add Grok 4.5 and Composer 2.5 Fast models

Expose the current SuperGrok OAuth chat model IDs in the default
provider catalog and README so OpenCode can select them without a
local config hack.

Closes #3
---
 README.md           | 21 ++++++++++++++++-----
 src/constants.ts    |  2 ++
 test/plugin.test.ts |  5 ++++-
 3 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index 78f87bd..29aa40a 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,8 @@ C:\Users\ysnock\.config\opencode\opencode.json
 
 It now includes `provider.xai-oauth` with these model IDs:
 
+- `grok-4.5`
+- `grok-composer-2.5-fast`
 - `grok-4.3`
 - `grok-4.20-0309-reasoning`
 - `grok-4.20-0309-non-reasoning`
@@ -89,6 +91,12 @@ Equivalent config block:
         "baseURL": "https://api.x.ai/v1"
       },
       "models": {
+        "grok-4.5": {
+          "name": "Grok 4.5"
+        },
+        "grok-composer-2.5-fast": {
+          "name": "Composer 2.5 Fast"
+        },
         "grok-4.3": {
           "name": "Grok 4.3"
         },
@@ -140,7 +148,7 @@ xAI Grok OAuth
 6. Select a model in OpenCode:
 
 ```text
-xai-oauth/grok-4.3
+xai-oauth/grok-4.5
 ```
 
 ## Models
@@ -149,13 +157,16 @@ xai-oauth/grok-4.3
 
 | Model ID                       | Use                                       |
 | ------------------------------ | ----------------------------------------- |
-| `grok-4.3`                     | Default general-purpose Grok OAuth model. |
+| `grok-4.5`                     | Default general-purpose Grok OAuth model. |
+| `grok-composer-2.5-fast`       | Composer 2.5 Fast coding model.           |
+| `grok-4.3`                     | Previous general-purpose Grok OAuth model.|
 | `grok-4.20-0309-reasoning`     | Reasoning-heavy tasks.                    |
 | `grok-4.20-0309-non-reasoning` | Faster non-reasoning variant.             |
 | `grok-4.20-multi-agent-0309`   | Multi-agent oriented Grok variant.        |
 
-The fallback list mirrors the Hermes Agent xAI OAuth model list as of this
-implementation. If xAI renames or retires models, update `src/constants.ts` and
+The fallback list includes current SuperGrok OAuth chat models (`grok-4.5`,
+`grok-composer-2.5-fast`) plus the earlier Hermes-compatible Grok IDs. If xAI
+renames or retires models, update `src/constants.ts` and
 `~/.config/opencode/opencode.json`.
 
 ## Configuration
@@ -232,7 +243,7 @@ C:\Users\ysnock\.config\opencode\opencode.json
 Then restart OpenCode and select:
 
 ```text
-xai-oauth/grok-4.3
+xai-oauth/grok-4.5
 ```
 
 ### API Key Missing
diff --git a/src/constants.ts b/src/constants.ts
index 08b0f5b..edeab36 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -18,6 +18,8 @@ export const XAI_ACCESS_TOKEN_REFRESH_SKEW_MS = 120_000;
 export const OAUTH_CALLBACK_TIMEOUT_MS = 180_000;
 
 export const DEFAULT_XAI_MODELS = [
+  "grok-4.5",
+  "grok-composer-2.5-fast",
   "grok-4.3",
   "grok-4.20-0309-reasoning",
   "grok-4.20-0309-non-reasoning",
diff --git a/test/plugin.test.ts b/test/plugin.test.ts
index f2766bb..46ef709 100644
--- a/test/plugin.test.ts
+++ b/test/plugin.test.ts
@@ -9,7 +9,10 @@ describe("plugin config", () => {
     const provider = (config.provider as Record<string, unknown>)["xai-oauth"] as Record<string, unknown>;
     expect(provider.npm).toBe("@ai-sdk/openai");
     expect((provider.options as Record<string, unknown>).baseURL).toBe("https://api.x.ai/v1");
-    expect(Object.keys(provider.models as Record<string, unknown>)).toContain("grok-4.3");
+    const modelIds = Object.keys(provider.models as Record<string, unknown>);
+    expect(modelIds).toContain("grok-4.5");
+    expect(modelIds).toContain("grok-composer-2.5-fast");
+    expect(modelIds).toContain("grok-4.3");
   });
 
   it("only treats api.x.ai as a safe API token destination", () => {