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cascadeflow TypeScript Examples

Complete collection of examples demonstrating cascadeflow from basics to production deployment.

🚀 Quick Start (5 Minutes)

# 1. Install cascadeflow
npm install @cascadeflow/core

# 2. Set your API key
export OPENAI_API_KEY="sk-..."

# 3. Run your first example
cd packages/core/examples/nodejs
npx tsx basic-usage.ts

That's it! You'll see cascading in action with cost savings.

🎯 Quick Reference - Find What You Need

Example	What It Does	Complexity	Time	Best For
basic-usage.ts	Learn cascading basics	⭐ Easy	5 min	First-time users
tool-calling.ts	Function calling	⭐⭐ Medium	15 min	Agent builders
cost-tracking.ts	Budget management	⭐⭐ Medium	15 min	Cost optimization
multi-provider.ts	Mix AI providers	⭐⭐ Medium	10 min	Multi-cloud
reasoning-models.ts	o1, o3, Claude 3.7, DeepSeek-R1	⭐⭐ Medium	10 min	Complex reasoning
semantic-quality.ts	ML-based quality validation	⭐⭐⭐ Advanced	15 min	Quality assurance
production-patterns.ts	Enterprise patterns	⭐⭐⭐ Advanced	30 min	Production deployment

💡 Tip: Start with basic-usage.ts, then explore based on your use case!

🔍 Find by Feature

I want to...

Use tools/functions? → tool-calling.ts
Track costs? → cost-tracking.ts
Enforce budgets? → cost-tracking.ts, production-patterns.ts
Use multiple providers? → multi-provider.ts
Deploy to production? → production-patterns.ts
Use reasoning models? → reasoning-models.ts
Validate quality with ML? → semantic-quality.ts
Access DeepSeek/Gemini/Azure? → Python examples (LiteLLM integration)

📋 Table of Contents

🌟 Core Examples - Basic usage, tools, multi-provider, reasoning
💰 Cost Management - Budget tracking
🤖 Quality & Validation - Semantic quality with ML
🏭 Production - Enterprise patterns

📚 Examples by Category

🌟 Core Examples (4 examples) - Start Here

Perfect for learning cascadeflow basics. Start with these!

1. Basic Usage ⭐ START HERE

File: nodejs/basic-usage.ts Time: 5 minutes What you'll learn:

How cascading works (cheap model → expensive model)
Automatic quality-based routing
Cost tracking and savings
When drafts are accepted vs rejected

Run it:

export OPENAI_API_KEY="sk-..."
cd packages/core/examples/nodejs
npx tsx basic-usage.ts

Expected output:

Query 1/8: What color is the sky?
   💚 Model: gpt-4o-mini only
   💰 Cost: $0.000081
   ✅ Draft Accepted

Query 5/8: Write a function to reverse a string...
   💛 Model: gpt-4o
   💰 Cost: $0.001320
   🎯 Direct Route (hard complexity)

💰 TOTAL SAVINGS: 48.2% reduction

Key concepts:

Token-based pricing (not flat rates)
PreRouter detects complexity and routes accordingly
Draft accepted = verifier skipped (saves money!)
Semantic quality checking with embeddings

2. Tool Calling 🎯

File: nodejs/tool-calling.ts Time: 15 minutes What you'll learn:

Define tools with TypeScript types
Type-safe tool definitions
Tool execution across cascade tiers
Universal tool format

Key features:

Full TypeScript type safety
Weather and calculator tools
Automatic tool format conversion
Cross-provider compatibility

Run it:

export OPENAI_API_KEY="sk-..."
npx tsx tool-calling.ts

3. Multi-Provider Cascade 🌐

File: nodejs/multi-provider.ts Time: 10 minutes What you'll learn:

Mix models from different providers
OpenAI + Anthropic + Groq
Provider-specific configurations
Cross-provider cost comparison

Example setup:

const agent = new CascadeAgent({
  models: [
    { name: 'llama-3.1-8b-instant', provider: 'groq', cost: 0.00005 },  // Fast & cheap
    { name: 'gpt-4o', provider: 'openai', cost: 0.00625 },              // Quality
    { name: 'claude-3-5-sonnet', provider: 'anthropic', cost: 0.003 },  // Reasoning
  ],
});

Requirements:

export OPENAI_API_KEY="sk-..."
export ANTHROPIC_API_KEY="sk-ant-..."
export GROQ_API_KEY="gsk_..."

4. Reasoning Models 🧠

File: nodejs/reasoning-models.ts Time: 10 minutes What you'll learn:

Use o1, o3-mini, Claude 3.7, DeepSeek-R1
Extended thinking mode
Chain-of-thought reasoning
Zero configuration (auto-detects reasoning capabilities)

Supported models:

OpenAI: o1, o1-mini, o3-mini
Anthropic: claude-3-7-sonnet-20250219
Ollama: deepseek-r1, deepseek-r1-distill (free local)
vLLM: deepseek-r1 (self-hosted)

Example:

const agent = new CascadeAgent({
  models: [
    { name: 'gpt-4o-mini', provider: 'openai', cost: 0.00015 },
    { name: 'o1', provider: 'openai', cost: 0.015 },  // Auto-detected
  ],
});

// Reasoning tokens automatically tracked
const result = await agent.run('Solve the Traveling Salesman Problem');

💰 Cost Management (1 example)

Track costs and manage budgets in production.

Cost Tracking

File: nodejs/cost-tracking.ts Time: 15 minutes What you'll learn:

Real-time cost tracking across queries
Per-model and per-provider cost analysis
Budget limits and alerts
Cost history and trends

Features:

Tracks costs per query, model, and provider
Manual tracking implementation (TypeScript doesn't have telemetry module yet)
Budget warnings at configurable thresholds
Cost breakdown by complexity

Run it:

export OPENAI_API_KEY="sk-..."
npx tsx cost-tracking.ts

Output example:

📊 Cost Breakdown:
   GPT-4o-mini: $0.000420 (5 queries)
   GPT-4o:      $0.004650 (3 queries)
   Total:       $0.005070

💰 Budget Status:
   Used:   $0.005070 / $10.00 (0.05%)
   Remaining: $9.995

🤖 Quality & Validation (1 example)

ML-based semantic validation using embeddings.

Semantic Quality Validation

File: nodejs/semantic-quality.ts Time: 15 minutes What you'll learn:

Semantic similarity scoring with BGE-small-en-v1.5
Off-topic response detection
Integration with cascade quality validation
Request-scoped caching for performance

Features:

Model: BGE-small-en-v1.5 (~40MB, auto-downloads)
Runtime: CPU-based, fully local inference
Latency: ~50-100ms per check (with caching)
Caching: 50% latency reduction on cache hits

Installation:

npm install @cascadeflow/ml @huggingface/transformers

Example:

import { CascadeAgent } from '@cascadeflow/core';
import { UnifiedEmbeddingService } from '@cascadeflow/ml';

const embeddingService = await UnifiedEmbeddingService.getInstance();

const agent = new CascadeAgent({
  models: [
    { name: 'gpt-4o-mini', provider: 'openai', cost: 0.00015 },
    { name: 'gpt-4o', provider: 'openai', cost: 0.00625 },
  ],
  quality: {
    semanticThreshold: 0.7,  // Reject if similarity < 70%
    embeddingService,
  },
});

Run it:

export OPENAI_API_KEY="sk-..."
npx tsx semantic-quality.ts

🏭 Production (1 example)

Deploy cascadeflow to production with enterprise patterns.

Production Patterns ⭐

File: nodejs/production-patterns.ts Time: 30 minutes What you'll learn:

Error handling and automatic retries
Response caching for performance
Rate limiting and throttling
Monitoring and logging
Cost tracking and budgets
Failover strategies

Patterns covered:

Exponential backoff retries
In-memory and Redis caching
Token bucket rate limiting
Structured logging
Budget enforcement
Multi-provider fallback

Features:

// Error handling with retries
async function withRetry(fn, maxRetries = 3) {
  for (let i = 0; i < maxRetries; i++) {
    try {
      return await fn();
    } catch (error) {
      if (i === maxRetries - 1) throw error;
      await sleep(Math.pow(2, i) * 1000);  // Exponential backoff
    }
  }
}

// Response caching
class ResponseCache {
  cache = new Map();
  ttl = 3600;  // 1 hour

  get(key: string): string | null {
    const entry = this.cache.get(key);
    if (!entry || Date.now() > entry.expiry) return null;
    return entry.value;
  }
}

// Rate limiting
class RateLimiter {
  tokens: number;
  maxTokens: number;
  refillRate: number;  // tokens per second
}

Run it:

export OPENAI_API_KEY="sk-..."
npx tsx production-patterns.ts

🎓 Learning Path

Step 1: Basics (30 minutes)

✅ Run basic-usage.ts - Understand core concepts
✅ Read the code comments - Learn patterns
✅ Try different queries - See routing decisions

Key concepts:

Cascading = cheap model first, escalate if needed
Draft accepted = money saved ✅
Draft rejected = quality ensured ✅
PreRouter detects complexity before calling models

Step 2: Tools & Multi-Provider (30 minutes)

✅ Run tool-calling.ts - Learn tool usage
✅ Run multi-provider.ts - Mix providers
✅ Run reasoning-models.ts - Try o1/o3

Key concepts:

Type-safe tool definitions
Universal tool format
Cross-provider compatibility
Reasoning token tracking

Step 3: Cost Management (30 minutes)

✅ Run cost-tracking.ts - Learn budget tracking
✅ Implement custom budget logic
✅ Read Cost Tracking Guide

Key concepts:

Token-based pricing
Per-model breakdown
Budget alerts
Cost optimization

Step 4: Production (1 hour)

✅ Run production-patterns.ts - Enterprise patterns
✅ Run semantic-quality.ts - ML validation
✅ Read Production Guide

Key concepts:

Error handling
Rate limiting
Caching
Monitoring

🛠️ Running Examples

Prerequisites

# Install cascadeflow
npm install @cascadeflow/core

# For semantic quality example
npm install @cascadeflow/ml @huggingface/transformers

# Install peer dependencies for providers you'll use
npm install openai                    # OpenAI
npm install @anthropic-ai/sdk         # Anthropic
npm install groq-sdk                  # Groq

Set API Keys

# OpenAI (most examples)
export OPENAI_API_KEY="sk-..."

# Anthropic
export ANTHROPIC_API_KEY="sk-ant-..."

# Groq (free, fast)
export GROQ_API_KEY="gsk_..."

# Together AI
export TOGETHER_API_KEY="..."

# HuggingFace
export HF_TOKEN="hf_..."

Run Examples

# Navigate to examples directory
cd packages/core/examples/nodejs

# Run with tsx (recommended)
npx tsx basic-usage.ts
npx tsx tool-calling.ts
npx tsx cost-tracking.ts

# Or install tsx globally
npm install -g tsx
tsx basic-usage.ts

💡 Example Code

Minimal Example (Recommended Setup)

import { CascadeAgent } from '@cascadeflow/core';

// Recommended: Claude Haiku + GPT-5
const agent = new CascadeAgent({
  models: [
    { name: 'claude-haiku-4-5-20251001', provider: 'anthropic', cost: 0.0008 },
    { name: 'gpt-5', provider: 'openai', cost: 0.00125 },
  ],
});

const result = await agent.run('What is TypeScript?');
console.log(`Cost: $${result.totalCost}, Savings: ${result.savingsPercentage}%`);

Note: GPT-5 availability depends on your OpenAI account tier. The cascade works immediately - Claude Haiku handles 75% of queries!

OpenAI Only

const agent = new CascadeAgent({
  models: [
    { name: 'gpt-4o-mini', provider: 'openai', cost: 0.00015 },
    { name: 'gpt-4o', provider: 'openai', cost: 0.00625 },
  ],
});

With Full Configuration

import { CascadeAgent, ModelConfig } from '@cascadeflow/core';

const models: ModelConfig[] = [
  {
    name: 'claude-haiku-4-5-20251001',
    provider: 'anthropic',
    cost: 0.0008,
    apiKey: process.env.ANTHROPIC_API_KEY,
  },
  {
    name: 'gpt-4o',
    provider: 'openai',
    cost: 0.00625,
    apiKey: process.env.OPENAI_API_KEY,
  },
];

const agent = new CascadeAgent({
  models,
  quality: {
    threshold: 0.7,  // Quality configured at agent level
    requireMinimumTokens: 10,
  },
});

const result = await agent.run('Explain quantum computing');

console.log(result.content);
console.log(`Cost: $${result.totalCost}, Saved: ${result.savingsPercentage}%`);

🌐 Universal Browser Support

All 7 providers work in both Node.js and browser:

✅ OpenAI
✅ Anthropic
✅ Groq
✅ Together AI
✅ Ollama (local)
✅ HuggingFace
✅ vLLM (local)

cascadeflow automatically detects your runtime environment!

Browser Example: See browser/vercel-edge/ for edge function deployment.

🔧 Troubleshooting

API key errors

# Check if set
echo $OPENAI_API_KEY

# Set it
export OPENAI_API_KEY="sk-..."

# Windows
set OPENAI_API_KEY=sk-...

# Or use .env file
echo "OPENAI_API_KEY=sk-..." > .env

Import errors

# Install core package
npm install @cascadeflow/core

# Install peer dependencies
npm install openai @anthropic-ai/sdk groq-sdk

# For semantic quality
npm install @cascadeflow/ml @huggingface/transformers

Examples run but show errors

# Check Node.js version (18+ required)
node --version

# Reinstall
rm -rf node_modules package-lock.json
npm install

tsx command not found

# Install tsx
npm install -g tsx

# Or use npx
npx tsx basic-usage.ts

Semantic quality model download fails

# Model downloads automatically on first run
# If it fails, check internet connection and try again

# Manual cache clear
rm -rf ~/.cache/huggingface

💡 Pro Tips

1. Start Simple

Begin with basic-usage.ts before advanced examples.

2. Read the Code

All examples are heavily commented. Read through to understand patterns.

3. Key Concepts

Token-Based Pricing:

Input and output tokens priced differently
gpt-4o: $0.0025 input, $0.010 output per 1K tokens
Actual costs depend on query/response length

Cost Savings:

Draft accepted = only cheap model used (big savings!)
Draft rejected = both models used (quality ensured)
Direct routing = only expensive model used (no savings)

Quality Validation:

Logprobs-based (default)
Semantic similarity with embeddings (optional)
Custom validators supported

4. Watch Statistics

const result = await agent.run(query);

// Access result properties
console.log(`Model: ${result.modelUsed}`);
console.log(`Cost: $${result.totalCost}`);
console.log(`Savings: ${result.savingsPercentage}%`);
console.log(`Latency: ${result.latencyMs}ms`);
console.log(`Cascaded: ${result.cascaded}`);
console.log(`Draft Accepted: ${result.draftAccepted}`);

5. Cost Tracking Pattern

// Track costs manually
const costs = {
  total: 0,
  byModel: {} as Record<string, number>,
  queries: 0,
};

for (const query of queries) {
  const result = await agent.run(query);

  costs.total += result.totalCost;
  costs.byModel[result.modelUsed] =
    (costs.byModel[result.modelUsed] || 0) + result.totalCost;
  costs.queries++;
}

console.log(`Average cost per query: $${(costs.total / costs.queries).toFixed(6)}`);

📖 Complete Documentation

Getting Started Guides

Quick Start - 5-minute introduction
Providers Guide - Configure AI providers
Tools Guide - Function calling
Cost Tracking - Budget management
TypeScript Quickstart - TypeScript-specific setup

Advanced Guides

Production Guide - Enterprise deployment
Performance Guide - Optimization
Custom Cascade - Custom routing
Custom Validation - Quality control
Browser Cascading - Edge/browser deployment

📚 View All Documentation →

🤝 Contributing Examples

Have a great use case? Contribute an example!

Template

/**
 * Your Example - Brief Description
 *
 * What it demonstrates:
 * - Feature 1
 * - Feature 2
 *
 * Requirements:
 * - npm install @cascadeflow/core
 * - export OPENAI_API_KEY="..."
 *
 * Setup:
 *     npm install @cascadeflow/core
 *     export OPENAI_API_KEY="..."
 *     npx tsx your-example.ts
 *
 * Expected Results:
 *     Description of output
 */

import { CascadeAgent } from '@cascadeflow/core';

async function main() {
  console.log('='.repeat(80));
  console.log('YOUR EXAMPLE TITLE');
  console.log('='.repeat(80));

  // Your code here

  console.log('\nKEY TAKEAWAYS:');
  console.log('- Takeaway 1');
  console.log('- Takeaway 2');
}

main().catch(console.error);

See CONTRIBUTING.md for guidelines.

📞 Need Help?

Documentation

📖 Complete Guides 🛠️ Tools Guide 💰 Cost Tracking Guide 🏭 Production Guide 📘 TypeScript Quickstart

Community

💬 GitHub Discussions - Ask questions 🐛 GitHub Issues - Report bugs 💡 Use "question" label for general questions

📊 Summary

✅ Available Examples (7 total)

Core (4): Basic usage, tool calling, multi-provider, reasoning models

Cost Management (1): Cost tracking

Quality & Validation (1): Semantic quality with ML

Production (1): Production patterns

📚 Documentation Coverage

✅ 7 TypeScript examples (~2,500+ lines of code)
✅ Comprehensive README (this file)
✅ Individual example READMEs (nodejs/README.md, browser/README.md)
✅ Full TypeScript definitions with IDE autocomplete
✅ 10+ comprehensive guides in main docs

🔑 Key Learnings

Essential Concepts:

✅ Draft accepted = money saved
✅ Draft rejected = quality ensured
✅ PreRouter detects complexity before cascade
✅ Token-based pricing (input/output split)
✅ Semantic quality with embeddings
✅ Universal tool format

Production Ready:

✅ Error handling
✅ Rate limiting
✅ Caching
✅ Budget management
✅ ML-based validation

💰 Save 40-85% on AI costs with intelligent cascading! 🚀

View All Documentation • Python Examples • TypeScript Examples • GitHub Discussions

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README.md

cascadeflow TypeScript Examples

🚀 Quick Start (5 Minutes)

🎯 Quick Reference - Find What You Need

🔍 Find by Feature

📋 Table of Contents

📚 Examples by Category

🌟 Core Examples (4 examples) - Start Here

1. Basic Usage ⭐ START HERE

2. Tool Calling 🎯

3. Multi-Provider Cascade 🌐

4. Reasoning Models 🧠

💰 Cost Management (1 example)

Cost Tracking

🤖 Quality & Validation (1 example)

Semantic Quality Validation

🏭 Production (1 example)

Production Patterns ⭐

🎓 Learning Path

Step 1: Basics (30 minutes)

Step 2: Tools & Multi-Provider (30 minutes)

Step 3: Cost Management (30 minutes)

Step 4: Production (1 hour)

🛠️ Running Examples

Prerequisites

Set API Keys

Run Examples

💡 Example Code

Minimal Example (Recommended Setup)

OpenAI Only

With Full Configuration

🌐 Universal Browser Support

🔧 Troubleshooting

💡 Pro Tips

1. Start Simple

2. Read the Code

3. Key Concepts

4. Watch Statistics

5. Cost Tracking Pattern

📖 Complete Documentation

Getting Started Guides

Advanced Guides

🤝 Contributing Examples

Template

📞 Need Help?

Documentation

Community

📊 Summary

✅ Available Examples (7 total)

📚 Documentation Coverage

🔑 Key Learnings