What's the difference? · C

When to still use ChatGPT (and when Jev fits beside it)

This topic is not “throw away ChatGPT.” TypeSafe positions Jev for decision slots. Chat stays for generation and open-ended work.

Use ChatGPT / an LLM when…

• A human needs to read the output
• The answer must contain new language (email, summary, code, plan)
• You’re exploring; the schema isn’t known yet
• Tool use / browsing / multi-step agents need flexible string actions
• You’re in an IDE / copilot loop
• You need image, audio, or video understanding
• The work is System-2-style multi-hop reasoning (official jaggedness: indirection is weak)

Use Jev when…

• You can enumerate outcomes (labels, scales, yes/no)
• The decision sits inside a product path (latency and cost matter)
• You need probabilities to set automate-versus-escalate policy
• You’re doing high-volume classify / route / score / verify
• You’re judging or guardrailing another model’s output (company use case)

Use both (recommended default story)

Five cascade patterns to steal

1. Jev triage → LLM reply (support)
2. LLM draft → Jev verify citations or policy (cookbooks)
3. Jev route → specialist LLM or a deterministic handler
4. Regex / LLM candidates → Jev Choice pick (extraction)
5. Jev feature extract → classical ML (autoresearch cookbook)

Use neither

If a deterministic rule or database lookup answers it, don’t burn tokens — chat or System One. Official jaggedness: implement math, dates, and counts in code. Jev is not a calculator.