numman-ali · cau1k · Jan 3, 2026 · Jan 4, 2026 · Jan 4, 2026 · Jan 4, 2026
diff --git a/README.md b/README.md
diff --git a/config/README.md b/config/README.md
@@ -1,59 +1,101 @@
 # Configuration
 
-This directory contains the official opencode configuration for the OpenAI Codex OAuth plugin.
+This directory contains the official opencode configuration files for the OpenAI Codex OAuth plugin.
 
-## ⚠️ REQUIRED Configuration File
+## ⚠️ REQUIRED: Choose the Right Configuration
 
-### full-opencode.json (REQUIRED - USE THIS ONLY)
+**Two configuration files are available based on your OpenCode version:**
 
-**YOU MUST use this configuration file** - it is the ONLY officially supported setup:
+| File | OpenCode Version | Description |
+|------|------------------|-------------|
+| [`opencode-modern.json`](./opencode-modern.json) | **v1.0.210+ (Jan 2026+)** | Compact config using variants system - 6 models with built-in reasoning level variants |
+| [`opencode-legacy.json`](./opencode-legacy.json) | **v1.0.209 and below** | Extended config with separate model entries for each reasoning level - 20+ individual model definitions |
 
+### Which one should I use?
+
+**If you have OpenCode v1.0.210 or newer** (check with `opencode --version`):
+```bash
+cp config/opencode-modern.json ~/.config/opencode/opencode.json
+```
+
+**If you have OpenCode v1.0.209 or older**:
 ```bash
-cp config/full-opencode.json ~/.config/opencode/opencode.json
+cp config/opencode-legacy.json ~/.config/opencode/opencode.json
 ```
 
-**Why this is required:**
-- GPT 5 models can be temperamental and need proper configuration
-- Contains 22 verified GPT 5.2/5.1 model variants (GPT 5.2, GPT 5.2 Codex, Codex, Codex Max, Codex Mini, and general GPT 5.1 including `gpt-5.1-codex-max-low/medium/high/xhigh`)
-- Includes all required metadata for OpenCode features
-- Guaranteed to work reliably
-- Global options for all models + per-model configuration overrides
+### Why two configs?
+
+OpenCode v1.0.210+ introduced a **variants system** that allows defining reasoning effort levels as variants under a single model. This reduces config size from 572 lines to ~150 lines while maintaining the same functionality.
+
+**What you get:**
 
-**What's included:**
-- All supported GPT 5.2/5.1 variants: gpt-5.2, gpt-5.2-codex, gpt-5.1, gpt-5.1-codex, gpt-5.1-codex-max, gpt-5.1-codex-mini
-- Proper reasoning effort settings for each variant (including new `xhigh` for Codex Max)
-- Context limits (272k context / 128k output for all Codex families, including Codex Max)
-- Required options: `store: false`, `include: ["reasoning.encrypted_content"]`
+| Config File | Model Families | Reasoning Variants | Total Models |
+|------------|----------------|-------------------|--------------|
+| `opencode-modern.json` | 6 | Built-in variants (low/medium/high/xhigh) | 6 base models with 19 total variants |
+| `opencode-legacy.json` | 6 | Separate model entries | 20 individual model definitions |
 
-### ❌ Other Configurations (NOT SUPPORTED)
+Both configs provide:
+- ✅ All supported GPT 5.2/5.1 variants: gpt-5.2, gpt-5.2-codex, gpt-5.1, gpt-5.1-codex, gpt-5.1-codex-max, gpt-5.1-codex-mini
+- ✅ Proper reasoning effort settings for each variant (including `xhigh` for Codex Max/5.2)
+- ✅ Context limits (272k context / 128k output for all Codex families)
+- ✅ Required options: `store: false`, `include: ["reasoning.encrypted_content"]`
+- ✅ Image input support for all models
+- ✅ All required metadata for OpenCode features
 
-**DO NOT use:**
-- `minimal-opencode.json` - NOT supported, will fail unpredictably
-- `full-opencode-gpt5.json` - DEPRECATED, GPT 5.0 models are being phased out by OpenAI
-- Custom configurations - NOT recommended, may not work reliably
+### Modern Config Benefits (v1.0.210+)
 
-**Why other configs don't work:**
-- GPT 5 models need specific configurations
-- Missing metadata breaks OpenCode features
-- No support for usage limits or context compaction
-- Cannot guarantee stable operation
+- **74% smaller**: 150 lines vs 572 lines
+- **DRY**: Common options defined once at provider level
+- **Variant cycling**: Built-in support for `Ctrl+T` to switch reasoning levels
+- **Easier maintenance**: Add new variants without copying model definitions
 
 ## Usage
 
-**ONLY ONE OPTION** - use the full configuration:
+1. **Check your OpenCode version**:
+   ```bash
+   opencode --version
+   ```
 
-1. Copy `full-opencode.json` to your opencode config directory:
-   - Global: `~/.config/opencode/opencode.json`
-   - Project: `<project>/.opencode.json`
+2. **Copy the appropriate config** based on your version:
+   ```bash
+   # For v1.0.210+ (recommended):
+   cp config/opencode-modern.json ~/.config/opencode/opencode.json
 
-2. **DO NOT modify** the configuration unless you know exactly what you're doing. The provided settings have been tested and verified to work.
+   # For older versions:
+   cp config/opencode-legacy.json ~/.config/opencode/opencode.json
+   ```
 
-3. Run opencode: `opencode run "your prompt" --model=openai/gpt-5.1-codex-medium`
+3. **Run opencode**:
+   ```bash
+   # Modern config (v1.0.210+):
+   opencode run "task" --model=openai/gpt-5.2:medium
+   opencode run "task" --model=openai/gpt-5.2:high
 
-> **⚠️ Critical**: GPT 5 models require this exact configuration. Do not use minimal configs or create custom variants - they are not supported and will fail unpredictably.
+   # Legacy config:
+   opencode run "task" --model=openai/gpt-5.2-medium
+   opencode run "task" --model=openai/gpt-5.2-high
+   ```
+
+> **⚠️ Important**: Use the config file appropriate for your OpenCode version. Using the modern config with an older OpenCode version (v1.0.209 or below) will not work correctly.
+
+## Available Models
+
+Both configs provide access to the same model families:
+
+- **gpt-5.2** (none/low/medium/high/xhigh) - Latest GPT 5.2 model with full reasoning support
+- **gpt-5.2-codex** (low/medium/high/xhigh) - GPT 5.2 Codex presets
+- **gpt-5.1-codex-max** (low/medium/high/xhigh) - Codex Max presets
+- **gpt-5.1-codex** (low/medium/high) - Codex model presets
+- **gpt-5.1-codex-mini** (medium/high) - Codex mini tier presets
+- **gpt-5.1** (none/low/medium/high) - General-purpose reasoning presets
+
+All appear in the opencode model selector as "GPT 5.1 Codex Low (OAuth)", "GPT 5.1 High (OAuth)", etc.
 
 ## Configuration Options
 
 See the main [README.md](../README.md#configuration) for detailed documentation of all configuration options.
 
-**Remember**: Use `full-opencode.json` as-is for guaranteed compatibility. Custom configurations are not officially supported.
+## Version History
+
+- **January 2026 (v1.0.210+)**: Introduced variant system support. Use `opencode-modern.json`
+- **December 2025 and earlier**: Use `opencode-legacy.json`
diff --git a/config/full-opencode.json → config/opencode-legacy.json b/config/full-opencode.json → config/opencode-legacy.json
diff --git a/config/opencode-modern.json b/config/opencode-modern.json
@@ -0,0 +1,239 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "plugin": [
+    "opencode-openai-codex-auth@4.2.0"
+  ],
+  "provider": {
+    "openai": {
+      "options": {
+        "reasoningEffort": "medium",
+        "reasoningSummary": "auto",
+        "textVerbosity": "medium",
+        "include": [
+          "reasoning.encrypted_content"
+        ],
+        "store": false
+      },
+      "models": {
+        "gpt-5.2": {
+          "name": "GPT 5.2 (OAuth)",
+          "limit": {
+            "context": 272000,
+            "output": 128000
+          },
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "variants": {
+            "none": {
+              "reasoningEffort": "none",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "low": {
+              "reasoningEffort": "low",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "medium": {
+              "reasoningEffort": "medium",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "high": {
+              "reasoningEffort": "high",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            },
+            "xhigh": {
+              "reasoningEffort": "xhigh",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            }
+          }
+        },
+        "gpt-5.2-codex": {
+          "name": "GPT 5.2 Codex (OAuth)",
+          "limit": {
+            "context": 272000,
+            "output": 128000
+          },
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "variants": {
+            "low": {
+              "reasoningEffort": "low",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "medium": {
+              "reasoningEffort": "medium",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "high": {
+              "reasoningEffort": "high",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            },
+            "xhigh": {
+              "reasoningEffort": "xhigh",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            }
+          }
+        },
+        "gpt-5.1-codex-max": {
+          "name": "GPT 5.1 Codex Max (OAuth)",
+          "limit": {
+            "context": 272000,
+            "output": 128000
+          },
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "variants": {
+            "low": {
+              "reasoningEffort": "low",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            },
+            "medium": {
+              "reasoningEffort": "medium",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            },
+            "high": {
+              "reasoningEffort": "high",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            },
+            "xhigh": {
+              "reasoningEffort": "xhigh",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            }
+          }
+        },
+        "gpt-5.1-codex": {
+          "name": "GPT 5.1 Codex (OAuth)",
+          "limit": {
+            "context": 272000,
+            "output": 128000
+          },
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "variants": {
+            "low": {
+              "reasoningEffort": "low",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "medium": {
+              "reasoningEffort": "medium",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "high": {
+              "reasoningEffort": "high",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            }
+          }
+        },
+        "gpt-5.1-codex-mini": {
+          "name": "GPT 5.1 Codex Mini (OAuth)",
+          "limit": {
+            "context": 272000,
+            "output": 128000
+          },
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "variants": {
+            "medium": {
+              "reasoningEffort": "medium",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "high": {
+              "reasoningEffort": "high",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "medium"
+            }
+          }
+        },
+        "gpt-5.1": {
+          "name": "GPT 5.1 (OAuth)",
+          "limit": {
+            "context": 272000,
+            "output": 128000
+          },
+          "modalities": {
+            "input": [
+              "text",
+              "image"
+            ],
+            "output": [
+              "text"
+            ]
+          },
+          "variants": {
+            "none": {
+              "reasoningEffort": "none",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "low": {
+              "reasoningEffort": "low",
+              "reasoningSummary": "auto",
+              "textVerbosity": "low"
+            },
+            "medium": {
+              "reasoningEffort": "medium",
+              "reasoningSummary": "auto",
+              "textVerbosity": "medium"
+            },
+            "high": {
+              "reasoningEffort": "high",
+              "reasoningSummary": "detailed",
+              "textVerbosity": "high"
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/lib/prompts/opencode-codex.ts b/lib/prompts/opencode-codex.ts
@@ -10,7 +10,7 @@ import { homedir } from "node:os";
 import { mkdir, readFile, writeFile } from "node:fs/promises";
 
 const OPENCODE_CODEX_URL =
-	"https://raw.githubusercontent.com/sst/opencode/dev/packages/opencode/src/session/prompt/codex.txt";
+	"https://raw.githubusercontent.com/anomalyco/opencode/dev/packages/opencode/src/session/prompt/codex.txt";
 const CACHE_DIR = join(homedir(), ".opencode", "cache");
 const CACHE_FILE = join(CACHE_DIR, "opencode-codex.txt");
 const CACHE_META_FILE = join(CACHE_DIR, "opencode-codex-meta.json");