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It's a split decision.
Choose KnowBe4 if you need security awareness training, phishing simulations and a published starting price: the pricing page lists $2.40 per user monthly for 25–50 seats on a three-year term. Choose Diligent One Platform if board management, governance, risk, compliance, audit or cyber-risk tools are the priority; its pricing is custom and not published. Neither lists a free plan. These platforms solve different problems, so the better pick depends on whether your priority is human risk or governance and GRC.
01Side by side
| KnowBe4 | Diligent One Platform | |
|---|---|---|
| Starting price | $2.40/user/month for 25–50 seats, on a three-year term | Custom quote; prices not published |
| Free plan | No free plan listed | No free plan listed |
| Best for | Security awareness and human-risk reduction | Board governance, risk and compliance |
| Core strength | Training, phishing simulations and email security | Board management and governance, risk and compliance |
| Learning curve | Not published | Not published |
| Integrations/data | Third-party integrations add-on has listed seat-based pricing | Integration pricing not published; board tools secure sensitive data |
| Team/seat costs | Per-seat tiers; 1,001+ seats require a quote | Custom pricing; per-seat costs not published |
| Support | Review score: 5 | Review score: 5 |
KnowBe4 Choose KnowBe4 if
- Choose KnowBe4 if security awareness training is a priority.
- Choose KnowBe4 if you want phishing simulations and email security.
- Choose KnowBe4 if published seat-based pricing matters.
Diligent One Platform Choose Diligent One Platform if
- Choose Diligent One Platform if board management is a priority.
- Choose Diligent One Platform if you need governance and GRC tools.
- Choose Diligent One Platform if cyber risk and audit belong in one platform.
02Pricing compared
KnowBe4 is the only option here with a published starting price. Its pricing page lists SAT Foundation at $2.40 per user per month for 25–50 seats, on a three-year term. The listed per-user price falls to $1.63 for 501–1,000 seats; pricing for 1,001 or more seats is by quote. SAT Advanced starts at $3.75 per user per month for 25–50 seats and includes a larger training library. The published pricing does not show a separate annual-billing price.
Diligent One Platform uses custom, quote-based pricing. Monthly and annual prices are not published, so we can’t make a direct cost comparison without a quote. Neither product lists a free plan or free trial in the published pricing information.
03Features and depth
These platforms address different risks. KnowBe4 focuses on human risk and AI agent security. Its security awareness training includes personalized education plus phishing and vishing simulations. Email and collaboration security is intended to detect and block phishing, malware and social engineering. The platform also describes AI defense agents, agent risk management and policy workflows. The homepage says its ModStore has more than 1,000 modules, videos and games; SAT Foundation includes 200+ training pieces, while SAT Advanced includes 1,000+ and unlimited phishing tests.
Diligent One Platform is built around board management and governance, risk and compliance. Its listed areas include board meeting preparation, enterprise risk, IT compliance, cyber risk, third-party risk and internal audit. Diligent describes AI automation, cross-framework mapping and real-time insights for IT compliance, but the published material does not list plan-level limits or prices. Choose based on the work you need covered: employee security training and threat response, or board and GRC workflows.
04Ease of use and learning curve
The published information does not describe setup time, onboarding, integrations or the day-to-day learning curve for either platform, so we can’t reliably call one easier to use. The likely workload depends on what you’re deploying: KnowBe4’s training and phishing simulations involve employees, while Diligent’s board, risk, compliance and audit tools serve governance and assurance workflows. That’s a difference in scope, not evidence that one is simpler.
Before choosing, ask each vendor to walk through the workflows your teams will use and clarify what implementation support is included. Diligent’s pricing is custom, so request a quote that identifies the products and services covered. KnowBe4’s listed per-seat price is tied to a three-year term.
Questions people ask
Can KnowBe4 replace Diligent One Platform?
Not as a like-for-like swap based on the published product descriptions. KnowBe4 focuses on security awareness, phishing simulations, email security and AI agent risk. Diligent One Platform focuses on board management, governance, enterprise risk, compliance, cyber risk and audit. Choose according to the workflows you need.
How much does KnowBe4 cost compared with Diligent One Platform?
KnowBe4 SAT Foundation is listed at $2.40 per user monthly for 25–50 seats on a three-year term; SAT Advanced starts at $3.75 for that seat range. Diligent’s pricing is custom, and monthly and annual rates are not published, so a direct comparison requires a quote.
Do either KnowBe4 or Diligent One Platform offer a free plan or trial?
The published pricing information lists no free plan or free trial for either platform. That does not confirm whether a vendor may offer a trial or demo by request; ask the sales team directly if you need access before purchasing.
Which platform should a security team choose?
Choose KnowBe4 if the priority is security awareness training, phishing simulations, email threat defense or AI agent risk. Choose Diligent One Platform if the work centers on board management, governance, enterprise risk, compliance, audit or cyber-risk oversight. Their feature sets address different needs.