Artifact AI, a London-based startup building autonomous AI agents for accounting firms, announced today it has raised $4 million in seed funding led by Andreessen Horowitz's a16z speedrun program. The round included participation from Motive Partners, Angel Invest, and executives from leading AI companies including OpenAI, Anthropic, ElevenLabs, and Mistral AI.
The company has developed Arti, an AI agent that CEO Ariel Harmoko positions as fundamentally different from traditional robotic process automation. Unlike rigid, script-following bots, Arti is designed to learn, adapt, and handle complex accounting workflows autonomously. Harmoko brings an unconventional background to fintech, having transitioned from being a three-time national champion racing driver to working in ML at Cambridge and AI at JPMorgan.
Arti delivers 99% accuracy in reconciliation and 96% accuracy in posting to general ledgers. The company claims customers achieve 7x ROI within a year and can scale client capacity 5x without adding headcount. A key differentiator is Artifact AI's integration approach—rather than requiring firms to migrate from existing systems, Arti sits on top of popular accounting platforms including QuickBooks, Xero, NetSuite, and Sage, eliminating migration requirements and downtime.
The platform handles end-to-end accounting processes spanning automated bank reconciliation, real-time transaction categorization, invoice and tax automation with AI scoring and audit trails, and fixed asset management. The system provides event-by-event accounting management with AI explanations and audit trails for compliance purposes, while offering reinforcement learning capabilities that allow firms to customize AI models over time.
Artifact AI targets three main market segments: top 500 firms needing multi-ledger support for hundreds of client entities, finance professionals in business and industry seeking plug-and-play automation, and tech-forward accountants moving from AI exploration to execution. The company already serves practices across the UK and US, and the funding coincides with its official US market entry.
The accounting industry faces persistent challenges with manual reconciliation work, thin margins from outsourcing, and fragmented technology stacks. Artifact AI addresses these with 30% margin uplift through automation, pricing at 12-15% of net value generated, and full compliance readiness with SOC2, GDPR, ISO certification and HMRC recognition.
