Pricing
Is Jev Free?
Short answer: no. Jev is a paid model wherever you call it. But the amount a trial actually costs is small, and there are a few ways to evaluate it for close to nothing. Here is the pricing picture as of early October 2026.
Updated
The short answer
Jev is not free — not on TypeSafe, and not on this site. TypeSafe bills per input token; this site bills per call in credits, and gateways bill per call or per token depending on the platform. Failed calls cost nothing on either side.
The cheapest way to try right now is the smallest one-time top-up on this site — one-time credits do not expire, and you can sign up and get a key immediately.
TypeSafe pricing and how it changed
TypeSafe bills Jev at $0.042 per million input tokens; output tokens are free. Access rules have moved since launch, so here is the dated timeline rather than a stale claim:
- 20 September 2026 — TypeSafe posted that Jev was open to everyone, with a $5 credit for new users.
- 22 September 2026 — TypeSafe paused new signups.
- 27 September 2026 — Signups reopened; new console accounts no longer get free credits (described as temporary).
So today a new TypeSafe console account starts with no free credit, and usage bills per input token. Rate limits are published as 100K tokens per second and 80 requests per second, adjusting dynamically.
Jev on gateways
Jev is also listed on OpenRouter (typesafe/jev-1.13), Vercel AI Gateway (typesafe-ai/jev), and Cloudflare Workers AI. Each of those platforms bills through its own pricing and none is free either — they are useful if you already consolidate AI spend there.
What a call costs on jev-api.org
This site sells access in credits rather than tokens: a successful call to /api/v1/decisions or /v1/systemone uses 1 credit, regardless of how many questions it carries. Validation errors and upstream failures use none. About 100 credits correspond to 1 USD before tax, with monthly, yearly, and one-time plans on the pricing page — one-time credits do not expire.
This is a different billing shape from TypeSafe's, not a cheaper per-token rate — batching several questions into one call is where the flat per-call price helps. To try it, add the smallest one-time credit pack and run a real decision in the playground.
How to keep costs low
Three habits keep a Jev bill small on either billing model:
- Batch questions into one call. A Noul, a Choice, and a Score in a single request cost one credit here (or one call's tokens on TypeSafe) instead of three round trips.
- Trim the state. Remove fields the question does not need — input tokens are what TypeSafe bills, and shorter states also avoid the model's weak spot with large, noisy input.
- Gate expensive paths behind a confidence threshold instead of calling Jev on every event.
FAQ
Does Jev have a free tier?
Not on TypeSafe right now — new console accounts start without free credits. This site has no free tier either; the cheapest entry is the smallest one-time credit pack on the pricing page, and those credits do not expire.
How much is one Jev call in dollars?
On this site, a successful call is 1 credit and about 100 credits correspond to 1 USD before tax, so roughly a cent per call. On TypeSafe it is $0.042 per million input tokens, so the cost depends on how long your state is.
Do failed calls cost anything?
No, on this site validation errors and upstream failures are free. Credits are only used when answers come back.
Do one-time credits expire?
No. One-time credit packs on this site do not expire. Monthly and yearly plans also exist on the pricing page.
Is jev-api.org cheaper than TypeSafe per token?
It is a different model, not a discount. Here you pay 1 credit per call however long the state is; TypeSafe bills per input token. Which is cheaper depends on your request size and how many questions you batch per call.
Run your first decision
Add a small one-time credit pack and run a real call in the playground; failed calls don't use credits.