Public price
Found a public price ($60 /mo) on the pricing page.
Open sourceArthur alternatives
Arthur costs $60 /mo. We found 6.5 out of 10 of the buying evidence we check for. 5 of the 22 other products below publish more.
This is a comparison of what each company publishes on its own site. It covers price, free access, measured results, documented limits, product updates, and testing methods. It is evidence for a shortlist, not a rating of product quality. The products below share a broad category and are not necessarily direct substitutes. Use Comparima for direct competitors.
AI securityHow this market looks from public information.
6 of 23for published buying evidence
0 of 1comparable monthly prices are lower
83%can be tried first
43%publish measured results
65%state their limits
What we could verify
Every finding links to the page it came from. Open the source before relying on it.
Try before paying
A buyer can verify the claim themselves without paying ("Get Started for Free").
Open sourceMeasured customer result
Makes a performance claim ("enterprise-grade") with no number, dataset or test behind it that we could find.
Open sourceDocumented limits
Documents where it falls short ("edge cases").
Open sourceTesting method
Mentions "We evaluated", but gives no nearby test set, sample, baseline or success criteria.
Open sourceRecent product updates
Public changelog with versioned entries (found January 29, 2026).
Open sourceAsk before you buy
These questions come from the information we could not verify on the public site.
- What measurable result has a customer like us achieved?
- How were the headline claims tested, and what was the baseline?
Compare the field
Showing 12 of 22 that match your filters.
Arthurarthur.ai
6.5/10website evidence$60 /mo
No measured result we could find. No test method we could find.
- Price is on the site
- You can try it without paying
- Says what it cannot do
- Actively maintained
- No measured result we could find
- No test method we could find
Adversaadversa.ai
7/10website evidenceno price we could read
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- Says what it cannot do
- Shows how it was tested
- No price we could find
- No public changelog we could find
Endor Labsendorlabs.com
7/10website evidenceno price we could read
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- Says what it cannot do
- Shows how it was tested
- No price we could find
- No public changelog we could find
HiddenLayerhiddenlayer.com
7/10website evidenceno price we could read
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- Says what it cannot do
- Shows how it was tested
- No price we could find
- No public changelog we could find
PromptArmorpromptarmor.com
7.5/10website evidencefree tier
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- Price is on the site
- You can try it without paying
- Publishes a measured result
- Says what it cannot do
- No test method we could find
- No public changelog we could find
Straikerstraiker.ai
7/10website evidenceno price we could read
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- Says what it cannot do
- Shows how it was tested
- No price we could find
- No public changelog we could find
Credalcredal.ai
6/10website evidence$37,200/mo
Publishes about as much buying evidence as Arthur. Much dearer at $37200 a month against $60. Publishes a measured result, unlike Arthur.
- Price is on the site
- You can try it without paying
- Publishes a measured result
- No stated limits we could find
- No test method we could find
- No public changelog we could find
Harmonicharmonic.security
5/10website evidenceno price we could read
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- Actively maintained
- No price we could find
- No stated limits we could find
- No test method we could find
Lakeralakera.ai
5.5/10website evidencefree tier
Publishes about as much buying evidence as Arthur. No public changelog we could find, though Arthur publishes one.
- Price is on the site
- You can try it without paying
- Says what it cannot do
- No measured result we could find
- No test method we could find
- No public changelog we could find
Nomanoma.security
5.5/10website evidenceno price we could read
Publishes about as much buying evidence as Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- Says what it cannot do
- No price we could find
- No test method we could find
- No public changelog we could find
Fiddlerfiddler.ai
4/10website evidenceno price we could read
Publishes less buying evidence than Arthur. Publishes a measured result, unlike Arthur.
- You can try it without paying
- Publishes a measured result
- No price we could find
- No stated limits we could find
- No test method we could find
- No public changelog we could find
Nightfallnightfall.ai
3.5/10website evidenceno price we could read
Publishes less buying evidence than Arthur. No price we could find, though Arthur publishes one.
- You can try it without paying
- Says what it cannot do
- No price we could find
- No measured result we could find
- No test method we could find
- No public changelog we could find
Pillarpillar.security
3.5/10website evidenceno price we could read
Publishes less buying evidence than Arthur. No price we could find, though Arthur publishes one.
- You can try it without paying
- Says what it cannot do
- No price we could find
- No measured result we could find
- No test method we could find
- No public changelog we could find
Read in August 2026 from pages anyone can open. This is what each company puts on its own site, which is not the same as how good the product is. Something excellent can still tell you very little. Spotted a mistake? Tell us and we will read it again.
Check a product we have not covered