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Jev API Pricing: Cost per Token on All 4 Channels

Last checked · Independent guide, not affiliated with TypeSafe AI

ANSWER

Jev costs $0.042 per million input tokens ($42 per billion) and output tokens are free, on TypeSafe's API, OpenRouter and (since its launch promotion ended on September 25, 2026) Vercel AI Gateway. A typical request with a short message and a few questions used 300 to 450 input tokens in our tests, which is about $0.00002 per call.

Jev’s pricing is simpler than an LLM’s: you pay for input tokens only. Everything Jev sends back, whether a choice, a score or a probability, is free.

Channel Input Output Free option Notes
TypeSafe API $0.042 / 1M tokens Free Not published $42 per billion tokens; enterprise plans for higher limits
OpenRouter (typesafe/jev-1.13) $0.042 / 1M tokens $0 No Same rate as TypeSafe; needs prepaid credits
Vercel AI Gateway (typesafe-ai/jev) $0.042 / 1M tokens $0 $5/month free tier credit Free launch promotion ended Sep 25, 2026; card required
Cloudflare (typesafe/jev) Shown in dashboard only — Not stated for Jev Paid from prepaid AI Gateway credits, which carry a 5% top-up fee
OpenCode Zen (jev-1.13) $0.042 / 1M tokens Free jev-1.13-free, limited time Card fees passed through at cost

TypeSafe’s launch post says it expects prices to go down rather than up, and admits it cannot prove its pricing is not subsidized. Treat current prices as early-access prices.

These are input token counts from our own calls to the official API on September 19, 2026:

Request Input tokens Cost at $0.042/M
One short message, one yes/no question 287 $0.000012
One message, three questions (Noul, Choice, Score) 451 $0.000019
One message, 20 yes/no questions 559 $0.000023
A 26,867-token log file, one question 26,867 $0.0011
The largest state we could send (32,204 tokens) 32,204 $0.0014

Two things stand out:

  • Extra questions are almost free. Going from 1 to 20 questions on the same message added about 256 input tokens, roughly 13 tokens per question, and did not add latency. Asking everything in one call is much cheaper than one call per question, because the state is only paid for once.
  • The state is the cost. A long document dominates the bill. Trimming the state to the part the question needs saves money and, according to TypeSafe’s own notes on Jev 1.13, improves accuracy.

For a sense of scale, a million requests like the three-question example above would cost about $19 in input tokens. Our earlier batch of 131 test questions on Vercel cost $0.005 in total, and 145 questions on the official API cost $0.0054.

TypeSafe’s launch post puts LLM input prices at roughly $0.20 to $10 per million tokens, with output typically about five times the input price. Jev charges $0.042 for input and nothing for output. Two caveats keep this comparison honest:

  1. It only applies to jobs Jev can do: classification, routing, scoring and yes/no checks. If you need generated text, Jev cannot replace the LLM.
  2. The large multiples TypeSafe quotes (up to 444.6x cheaper) come from its own workflow evaluations, which it says are “on the higher end” of real-world gains. See Jev benchmarks explained.

TypeSafe’s documentation does not mention input caching or batch discounts as of September 25, 2026. The closest thing is packing many questions into one request. TypeSafe’s own “Parallel questions” cookbook puts 13 questions in one call and reports it 12.2 times cheaper and 10 times faster than 13 separate calls, with the same answers; our numbers above point the same way.

Cost per request ≈ (state tokens + roughly 15 tokens per short yes/no question, more for Choice and Score questions with long option descriptions) × $0.042 ÷ 1,000,000.

TypeSafe’s docs describe the 32k budget as about 150,000 characters of English, which works out to between four and five characters per token. Text full of numbers and IDs tokenizes less efficiently: our synthetic log file averaged about three characters per token. The usage.input_tokens field in every response gives the exact figure, so log it for a few days before projecting monthly spend.

Sources

  1. Models: pricing (TypeSafe docs)
  2. Introducing System One Models & Jev: cost comparison (TypeSafe AI blog) (Sep 15, 2026)
  3. Jev 1.13 on OpenRouter: API pricing & providers
  4. Jev on Vercel AI Gateway
  5. AI Gateway pricing (Vercel docs)
  6. Jev on Cloudflare Workers AI
  7. Unified Billing for third-party models (Cloudflare AI Gateway docs)
  8. Cookbooks: Parallel questions (TypeSafe docs)
  9. OpenCode Zen pricing (OpenCode docs)