Arthur AI Pricing: Plans & Cost Calculator 2026
Premium plans at $60/mo target scaling teams needing advanced ML monitoring, while a free tier is available for basic AI security.
Arthur AI plans and pricing
Free
Small teams getting started with AI
Enterprise
Teams with advanced needs or global scale
Arthur AI pricing: the quick answer
Arthur AI runs a free tier and a Premium plan at $60/mo, with custom-quoted Enterprise above, as of July 8, 2026. Premium is a flat rate, not per-seat, and lifts you from the free plan's 4 monitored use cases to 100, with retention going from 7 days to 30. The open-source Arthur Evals Engine stays free for PII and custom rule checks. Professional Services is an add-on on Premium and Enterprise, priced on request. For a small team, the free tier and open engine cover real ground before the $60/mo jump.
- FreeFree
- Premium$60/mo
- EnterpriseCustom
At $60/mo to start, Arthur AI sits 400% above the $12/mo median across 1 ai security tools we track.
Arthur AI cost calculator
Arthur AI Hidden Costs & Pitfalls
Premium is a clean flat fee, but two things sit outside it: the use-case ceiling that pushes you toward Enterprise, and paid Professional Services.
Arthur AI pricing, read against its live plans and category
Positioning
Arthur AI's free tier already covers PII detection and custom LLM rules, so the $60/mo Premium jump is real and should be justified before you take it. Premium is flat, not per-seat, and mostly buys headroom: 100 monitored use cases instead of 4, and 30-day retention instead of 7. Against a $6/mo category median that is a steep step, but it is aimed at teams running active production monitoring, not individual developers. If you specifically need Arthur's bias and fairness detection or its agent metrics, the price is defensible; otherwise the free engine does a lot.
Cost drivers
- 1Professional Services is an unpriced add-on on Premium and Enterprise, so integration help is not part of the $60/mo fee.
- 2Past 100 monitored use cases or 30-day retention there is no middle tier, only custom Enterprise.
Watch-outs
The pricing gives no visibility into what happens once you outgrow Premium's 100-use-case cap. Buyers can find themselves pushed straight into an opaque, custom-quoted Enterprise deal with no intermediate step to plan against.
Editor’s take
Small teams and open-source developers should lean on the free tier and the open Evals Engine for basic regex and PII rules. Mid-sized teams that need active monitoring have to weigh the flat $60/mo Premium against real usage. If that feels steep for your scale, Microsoft Purview is worth comparing as a more established option.
Oleh KemFounder & Lead AnalystArthur AI price history
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Frequently asked questions
Sources & verification
| Source | What was checked | Last checked |
|---|---|---|
| Official Pricing Page | Source of verified tiers | July 8, 2026 |
| Official Website | Official vendor website | — |
| G2 | G2 verified user reviews · 4.5/5 · 10 reviews | — |
| Capterra | Capterra verified user reviews | — |
| PeerSpot | PeerSpot enterprise peer reviews | — |
Every fact on this Arthur AI pricing page is tied to a named source and a verification date. Freshness-sensitive figures trace to the sources above; verify against the vendor before relying on them.
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