TypeSafe AI’s System One model

Jev AI turns text
into decisions.

Classify text, score leads, and get yes/no answers
—with confidence scores for your workflows.

Try Jev AI free View API guide

✓Choice, Score & Yes / No
↺Editable examples
⌘Structured results
⧉Copy your configuration

Jev AI playground

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Try different inputs · Product feedback

Load an input to edit it. Tokens are used only when you run it.

Normal input

A clear bug with a time-consuming workaround should not be treated as a completely blocked task.

Ambiguous input

Distinguish confusing behavior from a new feature request; do not infer high impact from dissatisfaction.

Missing information

Recognize that the feature, failure, deadline, and workaround are unspecified.

Questions3

choiceChoose the main issue. Classify a previously working feature that now produces incorrect output as a bug.⌄

Question

Answer options

scoreRate the stated impact on the task. Do not assume an unknown deadline or absent workaround.⌄

Question

Scale points, from lowest to highest

Yes / NoDoes the feedback explicitly establish that the task cannot be completed using any available workaround? Extra manual work alone does not count as blocked.⌄

Question

Advanced: edit JSON

Edit or paste a question configuration.

[
  {
    "id": "feedback_type",
    "type": "choice",
    "instructions": "Choose the main issue. Classify a previously working feature that now produces incorrect output as a bug.",
    "options": [
      {
        "label": "bug",
        "description": "Existing behavior fails or produces an incorrect result."
      },
      {
        "label": "feature_request",
        "description": "A capability the product does not currently offer is requested."
      },
      {
        "label": "usability",
        "description": "The existing feature works but is confusing or difficult to use."
      },
      {
        "label": "billing",
        "description": "Charges, invoices, pricing, or refunds are the main issue."
      },
      {
        "label": "praise",
        "description": "Positive feedback with no problem or request."
      },
      {
        "label": "other",
        "description": "The message falls outside these categories or lacks enough detail."
      }
    ]
  },
  {
    "id": "work_impact",
    "type": "score",
    "instructions": "Rate the stated impact on the task. Do not assume an unknown deadline or absent workaround.",
    "options": [
      {
        "label": "0",
        "description": "No meaningful disruption is described"
      },
      {
        "label": "1",
        "description": "A small inconvenience with an easy workaround"
      },
      {
        "label": "2",
        "description": "Significant extra work, but the task remains possible"
      },
      {
        "label": "3",
        "description": "A critical task cannot be completed using the stated available options"
      }
    ]
  },
  {
    "id": "blocks_work",
    "type": "noul",
    "instructions": "Does the feedback explicitly establish that the task cannot be completed using any available workaround? Extra manual work alone does not count as blocked.",
    "options": []
  }
]

Runs use input tokens and are saved to your account.

Results

Your answers will appear here.

Add your text and questions, then run Jev.

Probabilities express model confidence, not a guarantee of correctness.

Categories, scores, and probabilities

What is Jev AI?

Jev AI is TypeSafe AI’s System One model for text classification, scoring, and yes/no decisions. With UseJevAI, you can define questions, test your text, and reuse the same rules.

Classify customer feedback, prioritize support tickets, match product records, or filter retrieved context before generating an answer.

Browse all templates↗

Your context

“The export works, but the date column is empty.”

↓ Your questions + answer criteria

ChoiceWhat kind?Pick from your categories

ScoreHow much?Use your rating scale

Yes / NoIs it true?Assess a statement

Illustration of the workflow, not a model result.

How to use Jev AI

↳
Choose an input
Choose a case or add your own text. Sign in to run Jev.
≡
Set your questions
Choose categories, a rating scale, or a yes-or-no question. Add an “unknown” option when needed.
↺
Test your own case
Sign in to test your text with trial or purchased tokens. Check the result against your expected answer.
⧉
Reuse the configuration
Copy your questions and options for another input, a batch, or an API request.

Jev AI pricing

Buy input tokens when you need them. No subscription.

Start small$10 one-time

Input token rates$0.21 - $0.42 / 1M

One shared accountPlayground, Batch & API

View pricing→

Purchasing is not open yet. See pack details and current availability on the pricing page.

Questions,
answered.

About Jev, trial tokens, and running your own text.

What is TypeSafe AI, and how does Jev fit in?

TypeSafe AI is the team behind Jev, its System One model for text classification, scoring, and yes-or-no questions.

How is the Jev model different from a chatbot?

Jev returns categories, scores, and probabilities based on your questions and answer options. It doesn’t write open-ended replies like a chatbot.

How do I use Jev with my own text?

Choose a template or Your own case, then enter your text and questions. Sign in to run Jev with trial or purchased tokens.

Which Jev use cases can I explore?

Choose from 12 templates covering feedback, support, sales, content, product matching, retrieval, and agent decisions. Each includes sample inputs, output definitions, and rules you can edit.

Does a high probability mean the answer is correct?

No. A high probability doesn’t guarantee a correct answer. Test your questions on examples you know, and review uncertain results.

Can I use the API or run a batch?

Use Batch for CSV or JSONL files, or connect through the API. Both use your account’s input tokens. Check each page for current availability.

Is this the official Jev AI website?

No. UseJevAI is an independent service for text classification and scoring with Jev. Jev and TypeSafe AI belong to their respective owners.

Jev AI turns text into decisions.

Jev AI playground

Your answers will appear here.

What is Jev AI?

How to use Jev AI

Choose an input

Set your questions

Test your own case

Reuse the configuration

Jev AI pricing

Questions, answered.

Jev AI turns text
into decisions.

Questions,
answered.