Jev Pricing: No Subscription, 50 Free Credits

Credit packs

Need more than 12,000 evaluations, or higher rate limits for a team? Get in touch and we'll put together a custom pack.

Updated 2026-10-04

Jev costs $0.042 per million input tokens. Output is free.

That is TypeSafe's list price for Jev, its System One model. You pay only for what you send — the state plus the question set — because Jev returns typed answers instead of generated text, so there are no output tokens to bill.

In practice one evaluation is small. We measured real calls token by token: a typical evaluation with three questions and a short paragraph is about 484 input tokens, or roughly $0.00002. The heaviest request this site accepts — 12 fully described questions and 24,000 characters of state — is about 8,981 tokens, or $0.000377.

• Typical evaluation: ~484 tokens ≈ $0.00002
• Largest evaluation we accept: ~8,981 tokens ≈ $0.000377
• 1,000 typical evaluations ≈ 2 cents at list price

Source: TypeSafe model documentation, checked 2026-10-04. Token counts come from our own measurements against the live API. TypeSafe

So why buy credits here?

TypeSafe does not sell self-serve plans or give free usage — access starts with a waitlist, and pricing above the list rate goes through their sales team. JevStation is the ready-to-use layer on top: a playground you can use without writing code, saved evaluation threads, reusable question sets, an API key you can create in a minute, and automatic refunds when an evaluation fails. You pay per evaluation in credits, not per token, so the price of a request never depends on how the model tokenizes it: 1 credit for a standard evaluation (state up to 8,000 characters and up to 5 questions) and 3 credits for a larger one.

Estimate your monthly cost

Enter your expected volume and pick a model. The calculator shows what the same traffic would cost at that model's list token price and what it costs in JevStation credits, using the cheapest mix of packs.

What you can count on

• Secure checkout

  Payments run through the payment provider's hosted checkout. Your card details never reach our servers.

• Failed evaluations cost nothing

  If Jev errors or returns no answers, the credits are refunded automatically. You only pay for evaluations that complete.

• Credits last 24 months

  Purchased credits stay valid for 24 months from purchase. Sign-up credits are valid for 30 days.

• Plain terms

  No recurring charges and nothing to cancel. Read the terms for how credits and refunds work. Terms of service

Pricing questions

Is Jev free?

Not from TypeSafe — it charges $0.042 per million input tokens and gives no free credits. On JevStation you can run preset evaluations without an account (3 a day), and a free account comes with 50 credits, enough for 50 standard evaluations.

How much does one Jev evaluation cost?

At list price a typical evaluation costs about $0.00002 in tokens. On JevStation it costs 1 credit, or 3 credits when the state is over 8,000 characters or you ask more than 5 questions. With the 12,000-credit pack that is about $0.0013 per standard evaluation.

Do credits expire?

Purchased credits are valid for 24 months from the date of purchase. The 50 sign-up credits are valid for 30 days.

Am I charged when an evaluation fails?

No. Credits are reserved when an evaluation starts and refunded automatically if Jev errors or returns no answers.

Do the playground and the API share one balance?

Yes. Evaluations from the playground and from the API draw on the same credit balance at the same rate.

Is there a subscription?

No. Credit packs are one-time purchases — $9.90 for 5,000 credits or $15.90 for 12,000 — with no recurring charge and nothing to cancel.