Iris.ai vs Lettria (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Not comparable
Not comparable: Iris.ai does not list a price
Free plan
Tie
Neither has one
Higher rating
Lettria
3.5 against 3.9
Same job?
Yes
Both are AI Infrastructure & Agent Tooling tools

Side by side

Compared on	Iris.ai	Lettria
Our rating	3.5	3.9Better
Starts at	Not listed	Not listed
Free plan	No	No
Category	AI Infrastructure & Agent Tooling	AI Infrastructure & Agent Tooling
Plans	See pricing	See pricing
Key features	Axion - transforms disorganized enterprise data into AI-ready intelligence Neuralith - converts enterprise knowledge into an operational AI engine RSpace - targeted intelligence for R&D work Built specifically for regulated-industry data governance needs Powers custom AI agents and applications on enterprise data	Ontology-powered knowledge graphs built from a company's own documents Stated 30%+ accuracy improvement over vector-based RAG on complex knowledge Perseus generates production-ready ontologies from domain data in minutes Built for compliance and traceability in regulated industries Business experts kept in the loop during graph generation
Pros	Purpose-built for the governance and auditability regulated industries actually require Three distinct products let a customer adopt the specific layer they need Focused enterprise positioning (pharma, finance, healthcare) rather than generic AI marketing	Traceability and auditability matter for AI used in regulated industries Perseus meaningfully speeds up what is normally a months-long ontology project A named, checkable enterprise case study rather than only a claim
Cons	No published pricing - demo-request-only sales process Not accessible for individual users or small teams - enterprise-focused Value depends heavily on the quality/organization of a customer's existing data	No public pricing; every engagement starts with a demo or trial request Requires a real implementation project, not a plug-and-play setup Overkill for a small team with a basic internal search need
Company	Iris.ai	Lettria, founded 2019

Prices come from each vendor's pricing page, last checked 20260923. Check the vendor before you buy.

FAQ

Questions people ask

Is Iris.ai better than Lettria?

In our reviews Iris.ai scores 3.5 and Lettria scores 3.9. The better pick depends on the job. Iris.ai: Turns messy enterprise data into an AI knowledge foundation regulated industries can actually trust - three products (Axion, Neuralith, RSpace) covering data transformation, an operational AI engine, and R&D intelligence. Lettria: Graph Context Layer platform from Lettria that turns enterprise documents and unstructured knowledge into ontology-powered graphs for grounded, traceable AI.

Which is cheaper, Iris.ai or Lettria?

Iris.ai: see pricing. Lettria: see pricing.

Do Iris.ai and Lettria have free plans?

Neither lists a free plan.

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