Syntheia

What is Syntheia?

Syntheia builds software for deal lawyers that works from the actual words in documents rather than generated summaries. Its Compare tool shows provision-level differences across two documents or many, so a team can follow a negotiation across drafts, benchmark a new agreement against past deals or check a set of leases for deviations. Curate converts LP provisions, MFN elections and side letters from private funds into structured data that can be searched. Query extracts nested, source-attributed text from PDFs, Word files and scans, with OCR and awareness of defined terms and cross references, and is offered as an API for legal technology teams. The company says Compare uses no generative AI, so there is nothing probabilistic to verify. Compare can be used from a web app, Word, Outlook or by forwarding files to an email address. Super Comparer, the self-service version, was announced with two tiers: Standard at $20 per month and Premium at $60 per month.

Use cases

• Compare multiple legal documents at once
• Track changes across negotiation drafts
• Benchmark a new agreement against past deals
• Manage fund side letters and MFN elections
• Extract clauses with source attribution
• Review lease sets for deviations in due diligence

Who it's for

• Deal lawyers
• Law firm innovation and KM teams
• In-house legal teams
• Private fund legal teams
• Legal technology developers

Why use Syntheia

• Comparisons use the real text of each document, so lawyers read differences rather than an AI paraphrase.
• Many documents can be compared in one view instead of one pair at a time.
• Each extracted clause links back to the source document.
• Files can be sent from the tools lawyers already use, including Word and Outlook.

Syntheia features

• Multi-document comparison from one-to-one to many-to-many
• Exact blacklines built from source text, without generative AI
• Persistent issues list across matters (listed as coming soon)
• Multi-merge DOCX output (listed as coming soon)
• Side letter and MFN management in Curate
• Hierarchical, source-attributed text extraction
• OCR and reading-order resolution for scanned files
• Defined term and cross reference awareness
• Compare from web app, DMS, Outlook, Word or email

Syntheia integrations

• Outlook

How to get started with Syntheia

1. Upload the documents to compare, or forward them to your Syntheia email address.
2. The engine extracts the text and structure of each file, including definitions and cross references.
3. Compare aligns the provisions across all versions and highlights each difference.
4. Review the results, then export or return to them as the matter develops.

Syntheia limitations

• Prices are published only for Super Comparer; check the vendor for Compare, Curate and Query terms
• The multi-merge DOCX output and persistent issues list are listed as coming soon

Syntheia pricing

Syntheia has no free plan, but it offers a free trial. Paid plans start at $20 per month, according to the official pricing page on 24 Oct 2026.

Syntheia plans

• Standard

  $20/month

  Super Comparer, as announced August 2025

  • Unlimited one-to-one document comparisons

• Premium

  $60/month

  Super Comparer, as announced August 2025

  • Unlimited multi-document comparison

Plans as listed on the official pricing page on 24 Oct 2026. Prices can change and may vary by country or exclude tax. Check the official pricing page.

Syntheia alternatives

The main Syntheia alternatives listed on Debuly are AICamp, BaseNet, Recarta, ArchitAI, Craft.io and Fathom. The table compares pricing and platforms; order is A–Z.

1. 

   AICamp

   Team AI workspace for chatting with several LLMs, sharing prompts, building custom assistants and querying internal documents with admin controls.

   ProductivityChat assistantsAutomation and agents
   Free trialVisit AICamp (official site)
2. AA

   ArchitAI

   Voice-to-report field reporting app and AI project Copilot for architects, engineers and contractors, from $49 per seat monthly.

   ProductivityAutomation and agents
   Free trialVisit ArchitAI (official site)
3. 

   BaseNet

   Practice management software for law firms with an integrated AI assistant for documents and drafting

   ProductivityWriting
   Free trialVisit BaseNet (official site)
4. 

   Craft.io

   Product management software for roadmaps, backlog prioritization and OKRs, with Guru AI and development tool sync.

   ProductivityAutomation and agents
   Free trialVisit Craft.io (official site)
5. 

   Fathom

   AI meeting notetaker for Zoom, Google Meet and Teams with a free plan, bot-free capture, summaries and action items.

   ProductivityAudio and voiceAutomation and agents
   FreemiumVisit Fathom (official site)
6. 

   Recarta

   AI document analysis for construction and renovation projects that compares offers, contracts and invoices.

   ProductivityAutomation and agents
   Visit Recarta (official site)

Syntheia FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from images.squarespace-cdn.com · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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