Industry-leading LLM fine-tuning without the risks
We partnered with Defined.ai and fine-tuned our Word Error Rate from 18% down to 1.7%. Off-the-shelf data is often out of our budget, so it was a game changer for them to make it affordable.
Rémi Caland, Co-founder and CTO at Theseus AI
Don’t let generic AI hold you back
Powerful foundational models like GPT, LLaMa, Gemini and DeepSeek-R1 impress, but miss the specialized insight your business needs. Trained on the same biased, poor-quality or copyrighted data, they carry potentially expensive operational, legal, security and privacy risks and produce the same generic, uncreative outputs as your competitors.
But fine-tuning your LLM with high-quality, domain-specific data and expert-led evaluation means more accurate, reliable and relatable responses. Using ethically sourced data and treating contributors fairly protects your reputation, operational security and bottom line. Combined, your AI model will generate creative output tailored to your business needs and customers’ preferences to keep you ahead.
Our LLM fine-tuning services
Why Defined.ai?
Ethics That Matter
Data comes fully consented, bias-minimized, copyright-cleared and contributors are fairly compensated.
Human-Centric AI Crafting
Leveraging expert-led RLHF, RAG, Red Teaming and more ensures your fine-tuning is accurate and safe.
Truly Global Coverage
Scale across languages and markets with datasets spanning 70+ languages and 120+ markets and domains.
Governance-First Approach
Adherence to GDPR, ISO 27001 and 27701 accreditations and HIPAA compliance keep you on the right side of privacy and AI regulations.
Our step-by-step approach to LLM fine-tuning
LLM fine-tuning industry use cases
LLM fine-tuning FAQ
Can you fine-tune my proprietary or in-house AI model?
Your proprietary model is safe with us. We’ll fine-tune it using the method that fits your needs, from full fine-tuning to PEFT (LoRA/QLoRA), and adapt its architecture for optimal performance without compromising security. We also work with all generic foundational LLMs.
How do you protect data privacy?
Our data is always secure. Our sourcing is ethical and compliant, and our infrastructure ensures privacy from collection to deployment.
Are you compliant with US and EU AI regulations?
We build compliance into every step, meeting current US and EU AI regulations so you stay ahead of legal and reputational risks. Download the Defined.ai Ethical AI Manifesto
Can you scale LLM fine-tuning for multiple languages and markets?
We fine-tune at global scale, delivering models fluent and accurate across markets and domains with multilingual datasets.
How do you ensure fine-tuned AI models are safe and high-performing?
Your model is tested, stress-checked and validated by experts at every stage so it’s safe, accurate and ready for real-world use.
LLM fine-tuning resources
Want to know more?
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