Stemma AI

Market position

An early-stage company in accounts-payable audit and contract-compliance software, selling recovery-audit style outcomes delivered through software rather than manual audit engagements.

Positioning rests on zero up-front cost and risk (free pilot, fee only on recovery), read-only integration that requires no engineering work or system replacement and is said to go live in about two hours, clause-level evidence attached to each flagged overcharge, human confirmation of every claim, and UK/EU-only hosting with no use of customer data for model training.

Technology

The platform ingests invoices and contracts through a read-only ERP connection and uses AI/LLM-based parsing to check every invoice line against every contract clause, attaching evidence to each flagged breach. It never writes back to, modifies, deletes or creates records in source systems. Hosting is on Microsoft Azure in UK and EU regions only, with TLS 1.2+ in transit, AES-256 at rest with keys managed via Azure Key Vault, decryption in memory only during audit processing, and logged access. The company states customer contracts and invoices are not used to train AI models and that it operates on zero-retention tiers with its LLM providers.

Go-to-market

Direct sales led by the founders, with an introductory call that walks prospects through how the system reads a contract, shows sample findings on an anonymised contract, and provides a directional estimate of overpayment for the prospect's spend. The free six-week pilot and pay-only-on-recovery pricing serve as the primary adoption incentive.

UK businesses with heavy supplier spend, and in particular purchase ledger, finance and procurement teams; the company also notes it can deploy into an existing AWS or GCP agreement for subsidiaries of larger groups.

Geography

Headquartered in London, United Kingdom, with a registered office at Forma House, 40 Bowling Green Lane, London EC1R 0NE. Data is stored and processed exclusively in UK and EU regions and the target market is UK businesses.

History

STEMMA AI LTD was incorporated on 9 February 2026 and registered under SIC code 62012 (business and domestic software development). In March 2026 the company was named as part of the Techstars London Accelerator in the Spring 2026 cohort. Its website lists Innovate UK, Techstars and Plug and Play Ventures among its backers.

Risks & controversies

Revenue is contingent on identifying recoverable overcharges, with a stated fee cap of £50,000 per recovery, and the company depends on read-only access to customer ERP systems and contract data, making data protection and integration coverage central operational considerations. The company was incorporated in February 2026 and has yet to file its first accounts, due by 9 November 2027.