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Legal-grade AI platform Luminance has unveiled a new contract intelligence model, Luna, which it claims can deliver answers “up to four times faster” than general-purpose AI systems.
Luminance has unveiled Luna, a proprietary artificial intelligence model purpose-built for contract work, marking the company’s latest push into specialised legal AI.
Luna Crescent will be the first model released under Luminance’s new Luna family, which is designed to underpin the company’s contract intelligence platform and support AI-driven workflows across organisations.
Distinguishing itself from general-purpose AI systems, the legal tech company said Luna Crescent has been purpose-built to interpret the structure, language, and commercial context that underpin legal contracts.
The new contract intelligence model is designed to support legal teams in reviewing contracts, identifying obligations and risks, and extracting commercial insights from large volumes of agreements.
Built on Luminance’s own AI technology stack, the new model has been trained using a curated subset of the company’s proprietary legal dataset, comprising more than 220 million verified legal documents.
Now embedded across Luminance’s contract intelligence platform, the capability reflects more than a decade of research and development, including a year of dedicated work on the model itself.
The legal-grade AI platform has claimed Luna Crescent achieved 5 per cent improvement in accuracy over leading general-purpose models on contract understanding tasks, while also producing answers “up to four times faster” than generalist AI tools.
To evaluate the model’s performance, Luminance developed what it calls ContractIQ Bench, an internal benchmarking framework comprising more than 180,000 manually reviewed data points.
The benchmark tests a model’s ability to interpret legal provisions such as liability clauses, termination rights, and confidentiality obligations.
Graham Sills, co-founder and director of AI at Luminance, said this launch marks a shift to purpose-built legal AI, delivering greater accuracy, speed, and trust by being built within Luminance’s own stack, while giving customers clearer visibility and enabling context-aware agents to act across the contract life cycle.
“With Luna Crescent, enterprises finally have an LLM built for their work rather than borrowed from elsewhere,” Sills said.
“This is what vertical AI should deliver: greater accuracy, greater speed, and greater trust for the work that matters most.
“By developing Luna Crescent within our own AI stack, we can give customers clarity over how their contract intelligence is built, governed, and applied to their business, and power legal-grade agents capable of taking precise, context-aware action across the contract life cycle.”
