Patronus pricing

Patronus starts at $0/mo and has a free tier, with self-serve signup.

Last checked 2026-09-01. Verify on the vendor's own page before you commit spend.

Plans

The Developer plan at $10 / 1k small evaluator API calls; $20 / 1k large evaluator API calls; $10 / 1k eval explanations covers Access to last 2 weeks, 2 Projects, 5 Experiments per Project, Access to last 2 weeks, Access to last 2 weeks, Unlimited, Unlimited, which is where an agent would start.

Can an agent buy this on its own?

A price is only half the question. The other half is whether software can get from landing on the site to making a paid call without a person, which is what the AgentReady measures under adopt.

For Patronus, it can create an account itself; the signup flow is one an agent can actually complete.

Against that, a sales call gates access; credentials must be minted by hand in a dashboard. Each of those is a point where an unattended run stops and waits for a human.

That works out to 75/100 on adopt, against 59/100 overall.

What you are paying for

Patronus AI is a frontier lab training the first Digital World Models. Digital World Models predict and simulate agent actions in digital workflows. Patronus provides an end-to-end system to evaluate, monitor and improve performance of LLM systems, enabling developers to ship AI products safely and confidently.

Next

Patronus's full agent-readiness profile breaks down all 41 signals. Alternatives to Patronus ranks what else does the same job.

An agent can fetch this as data: GET /v1/pricing?domain=patronus.ai