kitio.aiLettria vs NaturalText AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Lettria starts at See pricing page and NaturalText AI starts at $2500/yr. Check both pricing pages for current plans.
On-premises deterministic AI for analysing enterprise text and data
Free trial · $2500/yrAt a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Document parsing
- Ontology generation
- Text-to-graph conversion
- GraphRAG retrieval
- Perseus developer tool
- Deterministic results
- Knowledge graph reasoning
- On-premises install
- No labelling needed
- Source tracking
| Feature | Lettria | NaturalText AI |
|---|---|---|
| Best for | GraphRAG and ontology tools for regulated industries | On-premises deterministic AI for analysing enterprise text and data |
| Category | Data & analytics | Data & analytics |
| Pricing model | Paid | Free trial |
| Starting price | See pricing page | $2500/yr |
| Free plan | No | No, 7-day trial |
| Made by | Lettria | NaturalText |
| Based in | France | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Lettria starts at See pricing page and NaturalText AI starts at $2500/yr. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
6 plans
Free Trial
Free
- Seven days
- On-premises
- Demo setup on request
Micro
$2500/yr
- 5,000 rows per run
- Unlimited runs
Small
$5000/yr
- 15,000 rows per run
- Unlimited runs
Medium
$10000/yr
- 40,000 rows per run
- Unlimited runs
Enterprise
$25000/yr
- 100,000 rows per run
- Unlimited runs
Unlimited
Contact sales
- Unlimited rows per run
- Distributed analysis
- Continuous learning
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Lettria
- Answers are traceable to source documents
- Targets regulated sectors
- Business experts can review ontologies
- Pricing is sales-led
- Needs ontology and graph know-how
- Heavy for simple document search
NaturalText AI
- Same answer every run
- Data stays inside your network
- No training data required
- Starts at $2,500 per year
- Installation is on-premises only
- Unconventional approach with little outside validation
Which one should you choose?
Choose Lettria if you want:
- Answers are traceable to source documents
- Targets regulated sectors
- Business experts can review ontologies
Watch out: pricing is sales-led.
Choose NaturalText AI if you want:
- Same answer every run
- Data stays inside your network
- No training data required
Watch out: starts at $2,500 per year.
Lettria vs NaturalText AI FAQ
What is the difference between Lettria and NaturalText AI?
Lettria: GraphRAG and ontology tools for regulated industries. NaturalText AI: On-premises deterministic AI for analysing enterprise text and data. Both are data & analytics tools.
Is Lettria or NaturalText AI cheaper?
Lettria starts at See pricing page and NaturalText AI starts at $2500/yr. Check both pricing pages for current plans.
Do Lettria and NaturalText AI have free plans?
Lettria: No. NaturalText AI: No, 7-day trial.
Who makes Lettria?
Lettria is made by Lettria, based in France.
Who makes NaturalText AI?
NaturalText AI is made by NaturalText.
Which should I choose, Lettria or NaturalText AI?
Choose Lettria if you value answers are traceable to source documents and targets regulated sectors. Choose NaturalText AI if you value same answer every run and data stays inside your network.