Prova vs Lakera
Lakera blocks the malicious prompt. Prova governs the whole decision and signs the record.
BOOK A CALLLakera Guard is a fast runtime safety firewall: it classifies prompts and outputs for injection, jailbreaks, and PII in milliseconds. Prova is the control plane around the whole decision: a built-in policy library and the prompt-injection detector, gateway enforcement, per-run verdicts, runtime boundaries, and an Ed25519-signed audit trail. They sit at different layers and run well together.
| Feature | Prova | Lakera |
|---|---|---|
| Prompt injection / jailbreak classifier | built-in detector | Yes |
| Inline latency budget | ~80ms p50 | <100ms |
| Built-in policy library (PII, secrets, residency, budget) | Yes | partial |
| Per-run health verdict | Yes | No |
| Fail-closed guarantee mode at the gateway | Yes | No |
| Ed25519-signed receipts, verifiable offline | Yes | No |
| Runtime autonomy boundaries (tools, steps, scopes) | Yes | No |
| Per-agent IAM (revocable capabilities) | Yes | No |
| EU AI Act / FDA / SEC / HIPAA evidence export | Yes | No |
| Self-hosted / air-gapped | Yes | Yes |
Where Prova is different
Different layer, complementary
Lakera gates the wire: is this prompt or output safe? Prova governs the decision: is it in policy, in budget, in bounds, and is there a signed record? Run Lakera in front of the model and Prova around the whole run.
A signed, verifiable record
Lakera produces block/allow decisions and telemetry. Prova signs every decision into a tamper-evident trail an auditor verifies offline, the EU AI Act record-keeping artifact.
Govern the agent, not just the prompt
Prova bounds what an agent may do (tools, steps, scopes) and can revoke a capability in real time. A prompt firewall cannot.
Use Lakera Guard for fast, inline prompt-injection and content safety. Use Prova for policy enforcement, signed receipts, boundaries, and the audit trail. Serious deployments run both.