← Vetro Attest · Free Art. 12/14 checker · Free EU AI Act tools

Vetro Attest vs. Vanta for the EU AI Act

*Engineering comparison, not legal advice. Vanta's framework coverage changes quickly; check their site for the current state.*

Vanta is a compliance automation platform: it connects to your cloud, HR and code tools, tracks controls against a framework and gets you through an audit. Vetro Attest does one narrow thing: it takes the logs your AI system actually produced and turns them into evidence a third party can verify.

What Vanta does well

• Continuous control monitoring across AWS, GCP, Azure, identity providers, HR and ticketing tools;
• Framework libraries (SOC 2, ISO 27001, and AI-specific ones such as ISO/IEC 42001), with policy templates and evidence collection;
• Audit workflow: auditor access, trust center, security questionnaires;
• One place for a security and compliance programme across the whole company.

If you need a SOC 2 report, an ISO certification or a trust center, it is a strong choice.

What a compliance automation platform does not give you

The EU AI Act asks for something more specific than a control being in place.

• Controls, not events. A platform can show that logging is *enabled* and that a policy exists. Art. 12 asks that the high-risk system's logs make its operation traceable; Art. 19 and 26 ask that those logs are kept. That is about the content of the logs themselves.
• The operator still holds the evidence. Screenshots and exports collected from your own systems are claims made by the party with an interest in the outcome.
• No per-run signature. Nothing independent pins a given agent run, with its tool calls and human interventions, to a digest and a moment.
• Priced for a programme. Plans are quote-based annual contracts sized for a company-wide compliance effort, not for one team that needs to prove what one agent did.

None of this is a flaw in Vanta; it is a different layer.

What Vetro Attest adds

Vetro Attest accepts an OTLP/JSON trace with the OpenTelemetry GenAI semantic conventions, or a natively signed Vetro ledger, rebuilds it into a hash-chained ledger and checks it for free. For 29 USD, one-off, you get:

• a full EU AI Act report mapping the trace onto logging (Art. 12, 19, 26) and human oversight (Art. 14);
• an ed25519 countersignature over the digest, event count and timestamp, verifiable by anyone against our published public key, no account needed.

If you deploy third-party AI and have no logs of your own, the document pack (99 USD) drafts a fundamental rights impact assessment (Art. 27), an Annex IV documentation draft, an AI literacy plan (Art. 4) and Art. 50 notices from one form, countersigned. It is a draft to review, not a legal opinion.

When to choose which

• Choose Vanta when you need a company-wide compliance programme, SOC 2 or ISO certification, and auditor workflow.
• Choose Vetro Attest when you need to prove what a specific AI system did, today, without a sales call.
• Use both: attach the signed attestation as evidence to the relevant AI Act control in Vanta. The control says logging exists; the attestation shows the log verified.

Try it

• Run the free EU AI Act Art. 12/14 checker.
• No ledger? Get the EU AI Act document pack for 99 USD.
• Paste an OTLP trace on the Vetro Attest home page and verify it free. The full report plus countersignature is 29 USD, no subscription.

See a sample ledger verified in one click, check your own logs free or get the countersigned EU AI Act report.