Release v3.38.40

Release Notes - v3.38.40

Release Date: 2025-12-30
Type: Enhancement + Model Sync
Previous Version: 3.38.39

🎯 Summary

Synchronized static model list with GitHub Copilot API data and implemented dynamic vision capability detection. Nodes now prioritize API cache for capability checks, with static list as fallback.

✨ New Features

Dynamic Vision Capability Detection

Before: Only checked static model list for vision support
After: Checks API cache first, then static list as fallback

New DynamicModelsManager Methods:

// Check if model supports vision from API cache
DynamicModelsManager.modelSupportsVision(token, modelId): boolean | null

// Check if model supports tools/function calling
DynamicModelsManager.modelSupportsTools(token, modelId): boolean | null

// Get all capabilities from cache
DynamicModelsManager.getModelCapabilities(token, modelId): {
  vision: boolean;
  tools: boolean;
  streaming: boolean;
  maxContextTokens: number;
  maxOutputTokens: number;
  isPremium: boolean;
} | null

// Get model from cache by ID
DynamicModelsManager.getModelFromCache(token, modelId): CopilotModel | null

Priority Order:

1. 🥇 API Cache - Most accurate, always up-to-date
2. 🥈 Static List - Fallback when cache unavailable

📋 Updated Model List

New Models Added (from API)

Model	Provider	Vision	Context	Output	Category
gpt-5.1	OpenAI	✅	264K	64K	versatile
gpt-5.2	OpenAI	✅	264K	64K	versatile
gpt-5-codex	OpenAI	✅	400K	128K	powerful
gpt-5.1-codex	OpenAI	✅	400K	128K	powerful
gpt-5.1-codex-mini	OpenAI	✅	400K	128K	powerful
gpt-5.1-codex-max	OpenAI	✅	400K	128K	powerful
claude-sonnet-4.5	Anthropic	✅	144K	16K	versatile
claude-haiku-4.5	Anthropic	✅	144K	16K	versatile
claude-opus-4.5	Anthropic	✅	144K	16K	powerful
claude-opus-41	Anthropic	✅	80K	16K	powerful
gemini-3-pro-preview	Google	✅	128K	64K	powerful
gemini-3-flash-preview	Google	✅	128K	64K	lightweight
grok-code-fast-1	xAI	❌	128K	64K	lightweight

Updated Model Capabilities

Model	Change
gpt-5	Context: 128K → 400K, Output: 64K → 128K
gpt-5-mini	Context: 128K → 264K
claude-sonnet-4	Context: 128K → 216K
gpt-4o-mini	Vision: ❌ (confirmed no vision)

New Provider: xAI

Added support for xAI (Grok) models:

• grok-code-fast-1 - Fast coding model (no vision)

🔧 Technical Changes

GitHubCopilotModels.ts

// New interface field
interface GitHubCopilotModel {
  // ... existing fields
  isPremium?: boolean;  // NEW: Indicates premium subscription required
}

// New manager methods
GitHubCopilotModelsManager.getFreeModels(): GitHubCopilotModel[]
GitHubCopilotModelsManager.getPremiumModels(): GitHubCopilotModel[]

// Updated category types
category: "versatile" | "powerful" | "lightweight" | "reasoning" | ...

// Updated provider types  
provider: "OpenAI" | "Anthropic" | "Google" | "Microsoft" | "xAI"

All Nodes Updated

Vision check flow in ChatModel, ChatAPI, and OpenAI nodes:

// BEFORE: Only static list
const modelInfo = GitHubCopilotModelsManager.getModelByValue(model);
const supportsVision = modelInfo?.capabilities?.vision;

// AFTER: API cache first, then static fallback
let supportsVision = DynamicModelsManager.modelSupportsVision(token, model);
if (supportsVision === null) {
  // Fallback to static list
  const modelInfo = GitHubCopilotModelsManager.getModelByValue(model);
  supportsVision = !!(modelInfo?.capabilities?.vision);
}

📁 Files Changed

• shared/models/GitHubCopilotModels.ts - Updated model list and added new methods
• shared/utils/DynamicModelsManager.ts - Added capability check methods
• nodes/GitHubCopilotChatModel/GitHubCopilotChatModel.node.ts - Dynamic vision check
• nodes/GitHubCopilotChatAPI/GitHubCopilotChatAPI.node.ts - Dynamic vision check
• nodes/GitHubCopilotOpenAI/GitHubCopilotOpenAI.node.ts - Dynamic vision check

🔄 Migration Notes

No breaking changes. The static model list is still used as fallback. For best results:

1. First API call populates the cache with accurate model data
2. Subsequent calls use cached data for capability checks
3. Cache expires after 1 hour, auto-refreshes on next call

📊 Default Models Updated

export const DEFAULT_MODELS = {
  GENERAL: "gpt-4.1",         // Free, with vision
  CODING: "gpt-5-codex",      // Premium, best for coding
  VISION: "gpt-4o",           // Free, with vision
  VISION_FALLBACK: "gpt-4.1", // Fallback for vision
  REASONING: "o3-mini",       // Best reasoning
  TOOLS: "gpt-4.1",           // Free with tools
  MULTIMODAL: "gemini-2.5-pro",
  FREE: "gpt-4.1",            // Best free model
  PREMIUM: "gpt-5.2"          // Best premium model
};