AI-powered invoice & contract intelligence for real-world finance.

Sounion helps finance teams and private equity owners catch overbilling that slips past manual checks. We reconcile invoices against contracts with AI, so you recover hidden EBITDA without hiring another army of analysts.

Our product

Sounion reads your vendor contracts and invoices line by line using a blend of OCR and large language models. It understands rate cards, tiers, units, and exclusions the way a senior analyst would, then compares what was negotiated to what was actually billed.

The output is a clean Excel report: mismatched lines, overcharges by vendor, and a savings summary you can hand straight to your CFO, controller, or operating partner.

How we’re different

We’re built for teams who already run a tight ship. Instead of replacing your ERP or AP system, Sounion sits on top and focuses on the last mile where leakage actually happens: contract interpretation and line-item billing.

The system is opinionated about risk. It flags patterns that look off (like quiet step-ups in unit price), not just obvious arithmetic errors, and explains why in plain language so your team can act quickly.

Building the future of finance ops

Our goal is simple: make invoice and contract review so automated that finance never has to choose between “move fast” and “check everything” again.

We’re starting with portfolio companies and mid-market operators where every point of margin matters. Over time, Sounion will expand into adjacent workflows across procurement and vendor management—always with the same thesis: less leakage, more enterprise value.