START WITH YOUR CONSTRAINTS

API convenience or local control?

Compare the access you need first. Then test accuracy, uncertainty, latency and cost on the same decisions.

Jev vs Laya vs Kev: the selection guide →
Find your deployment fitSources checked 2026-10-05
Additional requirements

Filters use documented capabilities. Unverified support is excluded when a requirement is selected. Language quality and deployment still need your own checks.

6 modelsEditorial order · no performance ranking
TypeSafe AI

Jev

A hosted decision model for choosing labels, rating a rubric and estimating yes/no probabilities.

Choose an optionYes / no probabilityRubric score
Reviewed deploymentHostedCheck serving requirements
API price$0.042 / 1M input tokensInput usage determines cost

jev-1.13.0

Convai Innovations

Laya

An open-weight encoder family with English and multilingual checkpoints for short, typed decisions.

Choose an optionYes / no probabilityRubric score
Reviewed deploymentSelf-hostedCPU support documented
API priceHosted price unverifiedSelf-hosting has operating costs

Laya family · model card checked 2026-10-05

Jared Palmer

Kev-4B

An open decision model with a pointer head, typed probabilities and a Jev-compatible serving interface.

Choose an optionYes / no probabilityRubric score
Reviewed deploymentSelf-hostedCheck serving requirements
API priceHosted price unverifiedSelf-hosting has operating costs

Kev 1.0 · Kev-4B

Fastino

GLiNER2.5-Decide

A compact open-weight model combining schema-defined decisions with extraction and constraints across outputs.

Choose an optionYes / no probabilityRubric score
Reviewed deploymentSelf-hostedCPU support documented
API priceHosted price unverifiedSelf-hosting has operating costs

GLiNER2.5-Decide · 2026-09-24 release

Bespoke Labs

Bespoke Nimble

A decision model and public training recipe for teams exploring their own data, evaluations and deployment.

Choose an optionYes / no probability
Reviewed deploymentSelf-hostedCheck serving requirements
API priceHosted price unverifiedSelf-hosting has operating costs

Bespoke-Nimble-9B · 2026-09-24 checkpoint update

Together AI

Tev1

An experimental fine-tuned model for selecting one supplied option, with a public classifier-training recipe.

Choose an option
Reviewed deploymentHosted / Self-hostedCheck serving requirements
API priceHosted price unverifiedSelf-hosting has operating costs

Tev1-4B-experimental · new-v1 recipe

Select up to three models to compare. A probability, a confidence statistic and a token logprob are not interchangeable. Test the whole task before setting thresholds.

PUT A DECISION TO WORK

Learn the pattern. Measure the result.

Route an agent request with a decision model

Define clear intent labels, keep uncertain cases visible and validate the selected tool before it runs.

Check RAG evidence before generating an answer

Evaluate relevance and evidence coverage after retrieval, and measure what filtering removes.

When do decision models actually save money?

Measure complete-task cost, fallback frequency and accepted quality before claiming token savings.