# Jus IA vs ChatADV

> Jus IA and ChatADV compete in AI for lawyers. We show the editorial position of each and the published criteria — AI Rankings never crowns a paid “winner” and never reorders for sponsorship.

_Updated October 22, 2026 · AI Rankings (OQuark)_

## Position in the AI for lawyers ranking

- Jus IA: #1
- ChatADV: #3

Position comes only from the ranking criteria (rule R1). When there's an affiliate link, it's labeled and never changes the order (R5).

## Side by side

| Criterion | Jus IA | ChatADV |
| --- | --- | --- |
| Ranking position | #1 | #3 |
| Free plan | Yes | No |
| Starting price | R$ 78.90/mo | R$ 277/mo |
| Speaks Portuguese? | Yes | Yes |

## What we verified

### Jus IA — Jusbrasil

Why it ranks here: Brazil's largest legal database, with validated case-law citations, a model specialized in Brazilian law, free experimental access and prices published in reais; the entry plans cap the number of messages.

Official site: https://ia.jusbrasil.com.br

### ChatADV — Décima Tecnologia

Why it ranks here: It handles the main legal tasks in Portuguese, with case law cited by court and number and a published price, but it has no permanent free plan (only a free trial of unstated length) and its paid plan costs more than those of the tools above.

Official site: https://chatadv.com.br

## How we compare

Both are judged by the same AI for lawyers criteria:

Usefulness for real legal work (case-law and statute research, drafting and reviewing filings and contracts, document analysis), coverage of Brazilian law and Portuguese support, pricing transparency and a free plan or trial.

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Editorial ranking by OQuark — never for sale (rule R1). Positions come only from the published criteria; no payment buys, raises or protects a place.

- See the full AI for lawyers ranking: https://oquark.io/ai-rankings/en/use-cases/legal
- Alternatives to ChatADV: https://oquark.io/ai-rankings/en/alternatives/chatadv
- Methodology: https://oquark.io/ai-rankings/en/methodology
- Web page: https://oquark.io/ai-rankings/en/compare/jus-ia-vs-chatadv
- This document: https://oquark.io/ai-rankings/en/compare/jus-ia-vs-chatadv/index.md