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Developer Tools · head to head

Keil MDK vs Sumsub

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite
Sumsub logo

Sumsub

Cybersecurity

Identity verification and AML screening priced per verification

From
$1.35/verification
Free plan
No
Full reviewWebsite

The short version

  • Only Keil MDK has a free tier, so it costs nothing to try first.
  • Each has a real cost: Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site; Sumsub the published per-verification rate is undercut by a monthly minimum of 149 or 299 dollars, so low volume businesses pay a much higher effective rate than the headline suggests.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Keil MDK and Sumsub actually diverge.

Attributes where Keil MDK and Sumsub differ
AttributeKeil MDKSumsub
Starting priceFree$1.35/verification
Pricing modelfreemiumPer verification
Free tierYesNo
PlatformsWebWeb, iOS, Android
CategoryDeveloper ToolsCybersecurity

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Keil MDK

Nothing recorded that Sumsub does not also cover.

Only in Sumsub

  • Document verification
  • AML screening
  • KYB verification
  • No-code flow builder
  • Transaction monitoring
  • Travel Rule
  • Fraud and duplicate detection

What people use each for

The jobs each tool is most often brought in to do.

Keil MDK

  • Embedded software developmentnot Sumsub
  • ARM microcontroller programmingnot Sumsub
  • Professional development environmentsnot Sumsub

Sumsub

  • A crypto exchange needing KYC plus Travel Rule handling under one contractnot Keil MDK
  • A gambling operator entering several European markets and needing document coverage without a separate vendor per countrynot Keil MDK
  • A fintech that wants a published price it can model in a business case before speaking to a salespersonnot Keil MDK
  • A marketplace verifying both individual sellers and the companies behind them without buying two productsnot Keil MDK

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Keil MDK

  • Pricing for Essential and Professional subscriptions not disclosed on primary site
  • Customers must contact Arm Developer Tools store for subscription rates

Sumsub

  • The published per-verification rate is undercut by a monthly minimum of 149 or 299 dollars, so low volume businesses pay a much higher effective rate than the headline suggests.
  • You are billed per verification attempt in most configurations, meaning applicant drop-off and resubmissions cost money without producing a customer.
  • Pass rates and document support vary noticeably by country, and a market that works well in Europe can produce materially worse rejection rates in parts of Africa and South East Asia.
  • The AML screening tier bundles list coverage that large institutions would normally buy separately and tune, giving less control over match thresholds than a dedicated screening vendor.
  • The company originated in Russia before restructuring to a UK entity, and some financial institutions still raise that history in vendor risk review, which can slow or block procurement at conservative banks.

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Sumsub

$1.35/verification
  • Basic$1.35/verification
    • 149 USD minimum monthly spend
    • Document verification and liveness
    • No-code flow builder
  • Compliance$1.85/verification
    • 299 USD minimum monthly spend
    • Everything in Basic
    • AML sanctions and PEP screening
  • Enterprise$undefined/year
    • Negotiated volume rate
    • Custom jurisdictions and languages
    • Dedicated support

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Sumsub if

  • You need document verification.
  • You work on Web, iOS, Android.
  • You also want aml screening.
Sumsub review

Questions people ask

Is Keil MDK or Sumsub better?
Neither clearly leads. Keil MDK starts at Free and Sumsub at $1.35/verification, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Sumsub?
Keil MDK has a free tier; the other does not. Paid plans start at Free for Keil MDK and $1.35/verification for Sumsub.
Does Keil MDK or Sumsub run on more platforms?
Keil MDK runs on Web. Sumsub runs on Web, iOS, Android.
Can I use Keil MDK for free?
Yes. Keil MDK has a free tier, so you can try it without paying. Sumsub starts at $1.35/verification.
What is Keil MDK best used for?
Keil MDK is most often used for embedded software development, arm microcontroller programming, professional development environments. Of those, embedded software development and arm microcontroller programming are not what Sumsub is typically brought in for.
What can Keil MDK do that Sumsub cannot?
Sumsub covers Document verification, AML screening, KYB verification, No-code flow builder.

Answered from the vendors’ own pages

Keil MDK: Does Keil MDK have a free version?

Yes, Keil MDK Community Edition is free for non-commercial projects. Essential and Professional editions are available as monthly or annual subscriptions.

Source
Sumsub: What does a verification actually cost?

1.35 USD on Basic and 1.85 USD on Compliance, but with 149 and 299 USD monthly minimums respectively. Below roughly 110 or 160 checks a month you are paying the minimum, not the rate.

Keil MDK: How much do Keil MDK paid editions cost?

Specific pricing for Essential and Professional editions is not published on the main site. Rates are available from the Arm Developer Tools store or by contacting Arm sales.

Source
Sumsub: Do failed verifications get charged?

Attempts are generally billable, so a poor onboarding funnel raises your bill. Confirm the exact resubmission policy in your contract.

Sumsub: Does it cover business verification?

Yes, KYB with company registry lookups and beneficial owner resolution is part of the platform rather than a separate product.

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