Reviewed by Harsh Desai · Last reviewed:
Air
An AI document engine that delivers cited answers from your own files in seconds
Best for
What does Air do?
- •Cited answers every response links to the exact document and page number for full transparency.
- •File support upload PDFs, DOCX, TXT, HTML, XML and Markdown files up to 100k pages on Pro.
- •Hybrid search combines semantic understanding with keyword precision for accurate results.
- •Privacy first no data sent to OpenAI, Google or any third-party LLMs.
- •On-prem option deploy air-gapped with self-hosted LLM for maximum security.
- •Fast responses average reply under 20 seconds even on large document collections.
- •Transparent reasoning shows searched documents and relevance scores in every answer.
- •Canadian hosting all hosted data stays on privacy-by-design servers in Canada.
- •Team scaling supports up to 50 users on Pro plan with priority support.
- •Knowledge management enables rapid contract review and policy analysis with citations.
- •Source Citations Every answer precisely references the exact document and page number from your uploaded files.
- •Self-Hosted LLMs Deploy with your own self-hosted LLM in fully air-gapped on-premises environments for complete data control.
- •Sub-20s Latency Delivers accurate responses in under 20 seconds across even the largest document collections.
- •No Third-Party APIs Processes all queries entirely on Canadian servers without sending any data to external LLM providers.
Pricing:
- •Free $0CAD/mo: 1 user, 100 pages total, 5 queries per day forever.
- •Starter $179CAD/mo: 10 users, 10k pages, 200 queries per day per user when billed yearly.
- •Pro $499CAD/mo: 50 users, 100k pages, priority support when billed yearly.
- •Enterprise Custom: unlimited users, pages and queries with tailored setup.
- •On-Premises Custom: one-time purchase with self-hosted LLM and no recurring fees.
What are Air's limitations?
- •Query caps free plan limited to 5 queries per day and only 100 total pages.
- •Yearly billing must pay annually to open up the listed Starter and Pro monthly rates.
- •No overages cannot exceed limits; must upgrade or delete documents to add more content.
- •No extras lacks API access, mobile app, CLI support or browser extension.
Our Verdict
For the Basic User, Air functions as a straightforward AI answer engine tailored for document-heavy workflows where quick citations and reliable sourcing matter most. It processes uploaded files to deliver precise responses grounded in your content, making it ideal for students, small teams, or solo researchers who need to avoid hallucinations while extracting insights from reports, manuals, or research papers. The free tier at $0CAD forever supports one user with up to 100 pages and 5 queries daily, providing an accessible on-ramp without financial commitment. This setup encourages mindful usage and helps beginners build confidence in AI-assisted document interrogation before scaling needs arise.
For the Vibe Builder, Air cultivates an atmosphere of thoughtful exploration and creative synthesis by turning dense document libraries into conversational companions that spark new ideas. Its citation-backed answers foster a calm, trustworthy environment where users can iterate on concepts, blend knowledge across files, and maintain an aesthetic of clarity and precision that aligns with curated, intentional workspaces. The on-premises option with one-time purchase and no recurring fees appeals to those who value data sovereignty and minimalist operations, allowing a smooth, distraction-free vibe without subscription fatigue. Overall it supports builders who prioritize depth, reliability, and a refined interaction style over flashy features.
One honest limitation is the strict lack of overages combined with caps on the free plan and no API, mobile app, or CLI support, which can frustrate users needing flexible scaling or integration into broader toolchains; yearly billing is also required to open up the advertised Starter and Pro rates. The platform earns a 7.5/10 for its focused strength in citation accuracy and on-prem availability yet loses points for rigidity around usage limits and missing extensibility that many modern teams expect. These constraints may require frequent upgrades or document pruning to stay within bounds, limiting spontaneous growth. Enterprise custom plans and the Pro tier at $499 CAD monthly do mitigate some issues for larger groups but still enforce a structured rather than fluid experience.
Skip it if you need smooth API access or mobile flexibility and consider Relativity aiR instead.
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Frequently Asked Questions
What is Air and how does it deliver cited answers?
Air by Capital Reasoning Solutions is an AI-powered document search tool that scans your uploaded files and delivers answers with direct citations from the source material. It uses advanced reasoning to understand context and pull the most relevant passages so you can verify every claim without hunting through pages yourself. This makes it especially useful for legal, compliance or research work where accuracy matters.
Does Air have a free plan?
Yes, Air has a free tier available at no cost. The free plan supports 1 user with a total of 100 pages and 5 queries per day that you can use forever. It's a good way to test the core citation features before upgrading.
Who should use Air for document search?
Air is best suited for legal teams, compliance officers, researchers and knowledge workers who need fast, verifiable answers from large document sets. If you regularly dig through contracts, case files or policy manuals and want to avoid manual searching, Air saves hours by surfacing cited excerpts instantly. Teams that value audit-ready references over generic AI summaries get the most value from it.
How does Air compare to Relativity aiR as an alternative?
Air and Relativity aiR both focus on document search with citations, but Air emphasizes lighter deployment options including on-premises self-hosted LLMs while Relativity aiR is more entrenched in e-discovery workflows. Air's interface prioritizes quick natural-language queries with inline source highlighting, whereas Relativity aiR offers deeper integration with existing legal databases. Many users find Air simpler to start with for general enterprise search before scaling to specialized legal tech.
What is the pricing for all Air tiers in 2026?
Air offers a Free plan at $0CAD/mo, then Starter at $179CAD/mo for 10 users, Pro at $499CAD/mo for 50 users, plus Enterprise and On-Premises options that are both custom priced. The Starter and Pro tiers include higher page limits and daily queries when billed yearly, while the custom plans provide unlimited usage and tailored setup or a one-time purchase with no recurring fees. All paid plans are designed around your specific document volume and team size.
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Air
Free tier available