SynthForge

Generate thousands of high-quality training conversations for AI fine-tuning in hours, not months.

# Generate 5,000 customer service conversations
npx synthforge generate --domain customer-service --count 5000

# Output: training_data.jsonl (ready for fine-tuning)

Why SynthForge?

Everything you need to create high-quality AI training data

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Lightning Fast

Generate 10,000 conversations in under 2 hours. What used to take months now takes minutes.

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Domain-Specific

Pre-built templates for customer service, sales, healthcare, tech support, and more.

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Quality Assured

Built-in quality scoring automatically filters low-quality generations.

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Persona Builder

Extract personality from real conversations to create consistent AI personas.

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Glossary System

Teach your AI domain-specific terminology and jargon.

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Ready to Use

Output in JSONL format, compatible with OpenAI, Together.ai, and local models.

How It Works

Three simple steps to unlimited training data

1

Configure

Choose your domain, set personality traits, and add any custom terminology.

2

Generate

Run a single command. SynthForge creates diverse, realistic conversations.

3

Fine-tune

Use the output directly with OpenAI, Together.ai, or any LLM provider.

Simple Pricing

Start free, scale as you grow

Open Source

Free
  • Full source code access
  • All domain templates
  • Community support
  • Self-hosted
  • MIT License
Get Started