Croma vs Magnar

Magnar is a separate app. Croma works inside Claude and ChatGPT, where your team already works.

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A new app, or a connection to the one you already use

Magnar is an AI legal workspace. A lawyer hands it a goal and the platform researches, analyses case files, drafts and reviews contracts inside its own app and a Word add-in. To use it, the team moves into Magnar.

Croma is not an app. It brings the official records of 6 countries into Claude, ChatGPT or your company's software, each with its source. The lawyer asks where they already work, never switches tools and gets answers from the model on their own subscription, the latest from Anthropic or OpenAI. Croma does not draft or manage documents. It delivers the data the work runs on.

Where Croma is the better pick

  • Keep working where you already work

    Croma connects to Claude and ChatGPT. There is no new app to learn and no team to migrate. The lawyer asks in the assistant they already use.

  • Checking official registries

    A case number, a tax id, a national id or a plate. Croma queries the official source and returns the record with its provenance, at query time.

  • Always the best models

    Croma works with the Claude or ChatGPT subscription you already pay for. Every new model from Anthropic or OpenAI is yours the same day, with no wait for an app to adopt it.

Where Magnar is the better pick

  • Document management

    Magnar stores and organises the firm's documents inside its app. Croma stores no documents. If you need document management, Magnar brings it.

  • E-signature

    Magnar includes e-signature in the same app. Croma does not sign documents.

  • One app for everything

    Magnar puts the agent, the documents and the signature in one place, for a firm that prefers a single tool. Croma is not an app. It lives inside the one you already use.

Which one to pick for the task

One row per task. The middle column is the short answer.

  • Look up an official record

    Croma

    Answers live, with the source of every field

  • Verify a company or a counterparty

    Croma

    Official records from 6 countries in one query

  • Always use the newest model

    Claude or ChatGPT with Croma

    Croma answers with the model of your Claude or your ChatGPT. When a new one ships, you already have it.

  • Draft or review a contract

    Claude or ChatGPT with Croma

    They draft and review, and with Croma verify the parties. Magnar does it inside its app.

  • Manage the firm's documents

    Magnar

    Brings document management and e-signature inside the app. Croma stores no documents.

  • Have everything in one app

    Magnar

    Agent, documents and signature in one place

They work together

Nothing stops you from having both. A firm can draft in Magnar and verify parties, cases and companies with Croma from Claude or ChatGPT. The two tools do not compete for the same task.

If your team already works in Claude or ChatGPT, Croma connects in a minute and changes nothing about what you already have. The published skills solve whole tasks, such as checking a supplier and getting back a memo with a traffic light.

Frequently asked questions

No. Magnar is an app that researches, drafts and reviews inside its own workspace. Croma is the official data layer any assistant or software queries. One produces documents and the other delivers records.

No. Croma connects to Claude and ChatGPT as a connector and you ask in plain language from there. If your team already uses either one, there is nothing new to learn.

The one on your subscription. Croma has no model of its own. On Claude you answer with the Claude model you have, and on ChatGPT with OpenAI's. When a new model ships, you have it the same day.

Yes. High courts, doctrine and statutes in the countries it covers, and each document arrives with its text and its official link.

Croma has a free plan with 5.000 credits a month and plans from US$20 a month. Magnar publishes a free plan with 5 credits a month and a Plus plan at US$50 a month with 30 credits a week. Its team plans are quoted by its sales team.

As of the date of this comparison, no. Magnar runs in its own app, in Word, in Outlook and with Google Drive. Croma connects to Claude, to ChatGPT and to your company's software.

Croma does not. Claude and ChatGPT do, in the same chat where Croma delivers the official records. The lawyer asks for the draft and the parties' details arrive already verified.

The facts about Magnar were read from its public pages on 4 de outubro de 2026. If something changed, write to hi@usecroma.com and we will fix it.

Official data in the assistant you already use

Connect Croma to Claude or ChatGPT in a minute. There is no new app to learn.

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