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Honest comparison of AI-powered document accessibility platforms.
Both platforms remediate documents. Aelira covers more ground.
Best for: Organizations needing high-volume PDF and Office remediation with API access
Pricing: Enterprise (contact sales)
Best for: Higher ed institutions needing unified document + LMS + cloud storage accessibility
Pricing: $2,249 AUD/mo per department
| Feature | PREP (Continual Engine) | Aelira |
|---|---|---|
| PDF Remediation Fix structural accessibility issues in uploaded PDF files | Yes Full (API + UI) | Yes Full structural remediation |
| Word/PPT/Excel Scan and remediate Office document formats | Yes PDF, Word, PPT, Excel, EPUB | Yes All office document types |
| Native LaTeX/MathML Source Remediate LaTeX source and produce structural MathML | Equation alt-text; no documented LaTeX/MathML source remediation | Yes Native LaTeX source + MathML |
| LMS-Native Workflow Works inside Canvas, Blackboard, etc. | Not LMS-native | Yes Canvas LTI 1.3 (verified); Blackboard in beta |
| Cloud Storage Scan Connect to Google Drive, OneDrive, SharePoint | No | Yes Google Workspace + Microsoft 365 |
| API Access Programmatic document processing | Yes Auto-Tag, Checker, Audit APIs | Yes REST API + CLI |
| Self-Hosted Open-Source AI Fully self-hosted, open-source AI so documents never leave your servers | On-prem/hybrid offered; no open-source AI documented | Yes Self-hosted Ollama (open-source, FERPA-friendly) |
| PDF-to-HTML Convert PDFs to responsive accessible HTML output | Yes Responsive accessible output | No Fixes source PDF directly |
| Video Captioning Auto-transcription and caption cleanup | No | Yes Auto-transcription + cleanup |
| Website Scanning Full WCAG scanning of web content | Via Audit API | Yes Full WCAG scanner |
| Pricing Cost to access the tool | Quote-based (not public) | $2,249 AUD/mo per dept |
AI auto-tagging across PDF, Word, PowerPoint, Excel, and EPUB with human-in-the-loop review and an exported, fixed file.
Programmatic document processing at scale with Auto-Tag, Checker, and Audit APIs.
Convert static PDFs into responsive, accessible HTML output.
PREP (Continual Engine) publicly markets itself to large organizations and enterprises; see its own website for named customer references.
PREP offers equation alt-text, but does not document native LaTeX source or structural MathML remediation. Aelira parses LaTeX source directly and produces MathML: the path STEM departments need.
Aelira runs on open-source AI you can host entirely on your own servers, so document content never leaves your institution.
Aelira embeds directly in Canvas via LTI 1.3 — with Blackboard LTI 1.3 in beta — so faculty remediate course content where they already work.
PREP is quote-based. Aelira publishes flat, public per-department pricing so you can budget without a sales call.
Try Aelira free for 30 days. 8 document types, native LaTeX/MathML, self-hosted AI. No credit card required.
Join the pilot program preparing for the April 2027 WCAG 2.1 deadline.
Comparisons are based on publicly available information as of August 2026 and reflect Aelira's views. Competitor features and pricing change over time; verify current details with each vendor. This page was authored by Aelira.