ComfyUI Razv LLM Node

Custom ComfyUI node for integrating Claude and Gemini APIs with image and text capabilities.

Features

• Text-based chat with latest Claude and Gemini models
• Optional image input support for vision tasks
• Support for Claude's "Extended thinking" capability across all models
• Multiple Claude models: Opus 4.1, Sonnet 4.5, Haiku 4.5
• Multiple Gemini models: 3 Pro Preview, 2.5 Pro, 2.5 Flash, 2.5 Flash Lite
• Adjustable parameters (temperature, max tokens, system prompt, seed for Gemini)

Installation

Option 1: ComfyUI Manager (Recommended)

1. Open ComfyUI Manager
2. Search for "razv-llm"
3. Click Install

Option 2: Git Clone

cd ComfyUI/custom_nodes
git clone https://github.com/razvanmatei-sf/razv-llm.git
cd razv-llm
pip install -r requirements.txt

Configuration

Claude API

Set your Anthropic API key using one of these methods:

1. Environment variable: ANTHROPIC_API_KEY or CLAUDE_API_KEY
2. Direct input in the node's API key field

Gemini API

Set your Google API key using one of these methods:

1. Environment variable: GEMINI_API_KEY or GOOGLE_API_KEY
2. Direct input in the node's API key field

Usage

1. Add the "RazvLLMChat" node to your workflow
2. Connect an image (optional) and provide a text prompt
3. Configure model and parameters as needed
4. Execute to get Claude's response

Node Parameters

• prompt: Text input for the LLM
• model: Choose from available models (see below)
• temperature: Control response randomness (0.0 - 2.0)
• max_tokens: Maximum response length (up to 200,000)
• system_prompt: Optional system message to guide the model's behavior
• api_key: Your API key (if not set via environment)
• image: Optional image input for vision tasks
• seed: Random seed for reproducible results (Gemini models only)
• timeout: Request timeout in seconds (10-3600, default: 500)

Available Models

Claude Models (as of November 2025)

• claude-sonnet-4-5 / claude-sonnet-4-5-20250929: Best balance of speed, cost, and intelligence. Recommended for most use cases. ($3/$15 per million tokens)
• claude-opus-4-1 / claude-opus-4-1-20250805: Most capable model for complex tasks. Best coding model (72.5% SWE-bench). ($15/$75 per million tokens)
• claude-haiku-4-5 / claude-haiku-4-5-20251001: Fast and cost-efficient for simple tasks. Near-frontier performance. ($1/$5 per million tokens)

All Claude models support "Extended thinking" capability for deep reasoning and can work continuously for several hours on long-running tasks.

Gemini Models (as of November 2025)

• gemini-3-pro-preview: Most intelligent model with advanced reasoning capabilities. 1M context window. ($2-4/$12-18 per million tokens)
• gemini-2.5-pro: Capable reasoning model
• gemini-2.5-flash: Best price-performance balance
• gemini-2.5-flash-lite: Fastest, most cost-efficient

Requirements

• ComfyUI
• Python 3.8+
• See requirements.txt for Python dependencies

License

MIT