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Head to head · 2026

nao vs Promethium

Pricing, free plans, ratings, features, pros and cons, side by side. Where one comes out ahead, we mark it.

nao

Open-source builder for analytics agents, focused on giving them the right context

3.9Free

Visit nao (opens nao in a new tab)

Promethium

Makes enterprise data AI-ready through a universal query engine, a context hub and a Trust Harness,…

3.8Not listed

Visit Promethium (opens Promethium in a new tab)

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: nao does not list a price

  • Free plan

    nao

    Only nao has one

  • Higher rating

    nao

    3.9 against 3.8

  • Same job?

    Yes

    Both are Data and Analytics tools

Side by side

Compared onnaoPromethium
Our rating3.9Better3.8
Starts atFreeNot listed
Free planYesBetterNo
CategoryData and AnalyticsData and Analytics
PlansFreeSee pricing
Key features
  • Analytics agent building framework
  • Context engineering as the organising idea
  • Evaluation of agent answers
  • Deployment included alongside build
  • Open source on GitHub
  • Universal Query Engine reaching data without consolidation
  • 360 degree Context Hub supplying semantic meaning
  • Trust Harness governing AI output
  • Open Agentic Platform for agent access
  • AI Analyst for natural-language questions across sources
Pros
  • Evaluation built in rather than generation alone
  • Open source and self-hostable where data access matters
  • Covers build through to deployment
  • Semantic context is what makes AI answers correct rather than plausible
  • Governance built in rather than assumed
  • Queries data in place instead of demanding consolidation first
Cons
  • Pricing page returns a 404
  • Self-hosting is operational work you take on
  • Agent answers still need checking against the warehouse
  • No public pricing - enterprise sales
  • Value depends on connector coverage for your systems
  • Semantic modelling requires real effort before the AI layer pays off
CompanynaoPromethium

Prices come from each vendor's pricing page, last checked 20260831. Check the vendor before you buy.

FAQ

Questions people ask

Is nao better than Promethium?

In our reviews nao scores 3.9 and Promethium scores 3.8. The better pick depends on the job. nao: Open-source builder for analytics agents, focused on giving them the right context. Promethium: Makes enterprise data AI-ready through a universal query engine, a context hub and a Trust Harness, so agents answer from governed data.

Which is cheaper, nao or Promethium?

nao: free. Promethium: see pricing.

Do nao and Promethium have free plans?

Only nao has a free plan.

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