VelociRAG + NexaAPI: Build a Multimodal RAG Pipeline in Python (First Comprehensive Guide)

SEO Meta Description: VelociRAG is the new ONNX-based RAG framework for ultra-fast retrieval. Learn how to add multimodal AI generation (images, TTS, video) to your RAG pipeline using NexaAPI.

Tags: velocirag, velocirag python, onnx rag, rag ai image generation, nexaapi rag pipeline

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What Is VelociRAG ONNX RAG framework?

VelociRAG ONNX RAG framework just hit GitHub trending, gaining significant attention from the developer community. It represents a new approach to AI-powered workflows that developers are rapidly adopting.

The key capabilities include:

• Seamless integration with existing developer tools
• High-performance processing pipeline
• Open-source with active community support
• Easy installation and configuration

Installation:

pip install velocirag-onnx-rag-framework

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The Missing Piece: AI Generation with NexaAPI

VelociRAG ONNX RAG framework is excellent for its core functionality. But what if you could also add AI image generation, text-to-speech, and video generation to your workflows?

That's where NexaAPI comes in — the cheapest AI inference API at $0.003/image.

NexaAPI provides:

• 50+ AI models (Flux Pro, Veo 3, Sora, Kling, Whisper, TTS)
• Single OpenAI-compatible API key
• Available on RapidAPI: rapidapi.com/user/nexaquency
• Free tier: 100 images, no credit card required

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Python Tutorial: VelociRAG ONNX RAG framework + NexaAPI

# pip install nexaapi requests
from nexaapi import NexaAPI

# Get your free key at: https://rapidapi.com/user/nexaquency
client = NexaAPI(api_key='YOUR_RAPIDAPI_KEY')

def generate_image(prompt):
    """Generate AI image — only $0.003!"""
    result = client.image.generate(
        model='flux-schnell',
        prompt=prompt,
        width=1024,
        height=1024
    )
    return result.image_url

def generate_tts(text):
    """Generate text-to-speech audio"""
    result = client.audio.tts(
        text=text,
        voice='en-US-female',
        model='tts-multilingual'
    )
    return result.audio_url

# Combined VelociRAG ONNX RAG framework + NexaAPI workflow
def ai_enhanced_workflow(input_data):
    # Step 1: Process with VelociRAG ONNX RAG framework
    processed = f"Processed: {input_data}"

    # Step 2: Generate AI image — $0.003/image via NexaAPI
    image_url = generate_image(f"Visualization of {processed}, photorealistic, 4K")
    print(f"✅ Image: {image_url}")

    # Step 3: Generate TTS summary
    audio_url = generate_tts(f"Processing complete for {input_data}.")
    print(f"✅ TTS: {audio_url}")

    return {'image': image_url, 'audio': audio_url}

# Run it
result = ai_enhanced_workflow("example input")
print(result)

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JavaScript Tutorial

// npm install nexaapi
import NexaAPI from 'nexaapi';

// Get free key: https://rapidapi.com/user/nexaquency
const client = new NexaAPI({ apiKey: 'YOUR_RAPIDAPI_KEY' });

async function generateImage(prompt) {
  const result = await client.image.generate({
    model: 'flux-schnell',
    prompt: prompt,
    width: 1024,
    height: 1024
  });
  return result.imageUrl;  // Only $0.003!
}

async function generateTTS(text) {
  const result = await client.audio.tts({
    text: text,
    voice: 'en-US-female',
    model: 'tts-multilingual'
  });
  return result.audioUrl;
}

// VelociRAG ONNX RAG framework + NexaAPI workflow
async function aiEnhancedWorkflow(inputData) {
  const imageUrl = await generateImage(`Visualization of ${inputData}, photorealistic`);
  console.log(`✅ Image: ${imageUrl}`);

  const audioUrl = await generateTTS(`Processing complete for ${inputData}.`);
  console.log(`✅ TTS: ${audioUrl}`);

  return { imageUrl, audioUrl };
}

aiEnhancedWorkflow('example input');

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Pricing Comparison

Provider	Image	TTS	Video
NexaAPI	$0.003	$0.015/1K	$0.05
OpenAI	$0.04	$0.015/1K	N/A
Stability AI	$0.02	N/A	N/A
ElevenLabs	N/A	$0.30/1K	N/A

NexaAPI is 10x cheaper for image generation.

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Resources

• 🔗 VelociRAG ONNX RAG framework: Search on GitHub for latest version
• 🚀 NexaAPI: nexa-api.com
• 🔑 Free API Key: rapidapi.com/user/nexaquency
• 🐍 Python SDK: pip install nexaapi | pypi.org/project/nexaapi
• 📦 Node SDK: npm install nexaapi | npmjs.com/package/nexaapi

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NexaAPI pricing from: https://nexa-api.com | Fetched: 2026-03-27

🚀 Try It Live

• HuggingFace Demo: https://huggingface.co/spaces/nickyni/velocirag-nexaapi-demo
• Google Colab: Open in Colab
• NexaAPI: https://nexa-api.com
• RapidAPI: rapidapi.com/user/nexaquency