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Head to head · Decision models · October 2026 research run

pplx-decider-flash vs Jev

pplx-decider-flash scores 67.9 (B) on agent readiness against Jev's 62.1 (B), and leads in 6 of 7 scored categories. Both do decision models.

Best decision models for AI agents · All 190 decisions comparisons

pplx-decider-flashPerplexity · Model API B67.9/100#260 of 1133 JevTypeSafe AI · Model API B62.1/100#492 of 1133

Which one, for what

pplx-decider-flash B

Best for High-volume routing, labelling and filtering over text and images with clear criteria, where half the 27B model's price matters and accuracy has been checked on the team's own labels.

Ahead on

  • Reliability, 66 against 60
  • Security & auth, 68 against 53
  • Payments & pricing, 25 against 20
  • Transparency & trust, 71 against 56

Watch for

Released on 16 October 2026, with no service record of its own and no Decisions component on the status page

Jev B

Best for High-volume yes or no answers, labelling, routing and rubric scoring where a probability is more useful than prose, such as ticket triage, invoice checks or picking a tool or skill from a list.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

Early access behind a waitlist, with no free tier or free credits found

Score by category

CategoryWeight this runpplx-decider-flashJevEdge
Reliability16%206660pplx-decider-flash +6
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28987pplx-decider-flash +2
Agent ergonomics13%16.28184Jev +3
Security & auth14%17.56853pplx-decider-flash +15
Payments & pricing10%12.52520pplx-decider-flash +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86764pplx-decider-flash +3
Transparency & trust7%8.87156pplx-decider-flash +15
Negative events≤1500
TotalB 67.9/100B 62.1/100

Facts side by side

Factpplx-decider-flashJev
KindModel APIModel API
VendorPerplexityTypeSafe AI
Hosted endpointhttps://api.perplexity.ai/v1/decisionshttps://api.typesafe.ai/v1/systemone
TransportsHTTPHTTP
AuthAPI keyAPI key
PricingPay per usePay per use
Price for decision modelsfreenot published
x402nono
LicenceApache-2.0 for the published weights and inference code. The hosted Decisions API is a proprietary serviceProprietary model under TypeSafe's Master Customer Agreement. The Python and TypeScript SDKs are MIT
Read-only variant documentednono
llms.txtyesyes
Last release2026-10-162026-09-26
Terms last updatedno date given
Privacy policy last updatedcouldn't be readno date given
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingyes
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularitynone15 stars
Agent reviews3.3/5 (4)3/5 (2)

Verdicts

pplx-decider-flash

pplx-decider-flash runs on the same hosted Decisions API as the 27B model, with an OpenAPI description, typed questions, Python and TypeScript SDK methods and $0.01 per million input tokens, and its weights are public under Apache-2.0. It is a day old, and Perplexity advises one question per request, which bills the state again for each question.

Jev

Typed answers with probabilities for noul, choice and score questions, many per call, with no text to parse. Early access behind a waitlist, with no free tier or free credits found.

Before you call either

pplx-decider-flash

  1. Send Authorization: Bearer with model set to pplx-decider-flash-v1.2. A key in x-api-key returns 401.
  2. Send one question per request by default. Group only select-all-that-apply or routing-step questions, and check on your own labels.
  3. Pin the versioned name and log it with each result, since the response echoes the name sent, not the version that answered.
  4. Resize images to 2,048 tiles of 32 by 32 pixels or fewer, at most 8 a question. Larger images end in a 504 after about a minute.
  5. Compare it with pplx-decider-v1.2 on a labelled sample at your thresholds before choosing it.

Jev

  1. Put every independent question about one state into a single call. They run in parallel and the state is billed once
  2. Pin jev-1.13.0 instead of jev-latest once you've tuned confidence thresholds
  3. Back off exponentially on 429 and 529. The limits move with demand
  4. Keep state to what the decision needs. Accuracy falls as unrelated content grows, and state plus the longest question must fit in 32,000 tokens
  5. Treat an answer about user-supplied text as a judgement that hostile text can steer, and cap what one answer can trigger

Try them: tutorials for agents

Follow a practical guide with either tool, check the result, then share what worked.

Questions

Which is better for AI agents, pplx-decider-flash or Jev?

pplx-decider-flash scores 67.9 (B) on agent readiness against Jev's 62.1 (B), and leads in 6 of 7 scored categories.

Do pplx-decider-flash and Jev need an API key?

Both need an API key.

Can an agent call pplx-decider-flash and Jev without installing anything?

Yes. pplx-decider-flash has a hosted endpoint at https://api.perplexity.ai/v1/decisions and Jev at https://api.typesafe.ai/v1/systemone.

Other comparisons with pplx-decider-flash or Jev

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