Education

When should you use Jev?

Q: When should I just write code?

When the rule is deterministic — arithmetic, comparisons, database lookups, or calling an API. Code is exact, cheap, and repeatable; don't ask a model to do a calculator's job.

Q: What is a hybrid step?

A step that mixes responsibilities — for example, deciding whether to refund a customer and then writing the reply. Split it into a Jev decision and an LLM generation.

Q: Can I use Jev for open-ended text generation?

No. Jev returns typed decisions, not prose. Keep generation, explanation, and summarization in your LLM.

Q: How many Jev steps should a workflow have?

As many bounded decisions as you actually have — usually a few, not dozens. Each Jev step should be one clear question. If a step answers two questions, split it.

Q: Does Jev replace my LLM?

No. Jev and an LLM solve different problems and usually work side by side in the same workflow.

Use Jev when a workflow step is a bounded decision with a known set of outcomes. Use an LLM for open-ended language and code for deterministic computation.

The short answer

Jev handles decisions. LLMs handle generation. Code handles computation. Splitting these responsibilities makes workflows easier to test, debug, and maintain.

A practical decision table

Workflow step

Best tool

Why

Route a ticket to one of five teams

Jev Choice

Bounded set of options

Decide if a reply needs human review

Jev Noul

Binary gate

Rate lead quality as low/medium/high

Jev Score

Ordered scale

Draft a customer support reply

LLM

Open-ended generation

Calculate tax or look up a user

Code

Deterministic result

Use Jev for bounded decisions

Choose Jev Choice when you need one option from a fixed set. Choose Jev Noul for a yes/no gate. Choose Jev Score for an ordered scale such as low, medium, and high.

Do not use Jev for everything

Use an LLM for drafting, summarizing, translating, and other open-ended text.
Use code for arithmetic, database lookups, API calls, and explicit rules.
When a step mixes responsibilities, split it into smaller Jev, LLM, and code steps.

Hybrid workflows are normal

A support workflow might use code to receive a ticket, Jev Choice to route it, an LLM to draft a reply, Jev Noul to decide whether review is needed, and code to send or queue the result.

See it in action

Describe your workflow and the analyzer will label each step.

Analyze your workflow

FAQ

Frequently asked questions

When is Jev a better fit than an LLM?−

When the step is a bounded decision with a small, known set of outcomes — a category, a route, a level, or a yes/no answer. Jev returns a value your code can branch on directly.

When should I just write code?+

What is a hybrid step?+

Can I use Jev for open-ended text generation?+

How many Jev steps should a workflow have?+

Does Jev replace my LLM?+

Still have questions?

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