Info
Cisco Duo is the best overall pick for most organizations adding MFA to an existing login flow, Twilio Verify is the better choice if you are building authentication into your own product, and Silverfort is the one to check first if legacy systems or service accounts are the actual problem. All seven were compared on published pricing, official MCP server status, and API depth.
Cisco Duo is the best overall multi-factor authentication software for most companies in 2026, and the best multi-factor authentication software for small business teams specifically, because it puts a real second factor in front of every login for $3 per user a month, with a free tier that covers organizations of 10 people or fewer outright. If you're building login into a product rather than rolling it out to employees, Twilio Verify is the better answer: it bills per verification instead of per seat, so cost tracks actual usage rather than headcount.
This category hides three different pricing philosophies under one label. Cisco Duo, Microsoft, Ping Identity, and RSA all charge per user per month. Twilio charges per verification. Silverfort quotes every deal individually and publishes no number at all. Comparing them on sticker price alone is a mistake, because the unit each vendor bills against changes what a real deployment actually costs.
A second thing to get straight before buying: MFA keeps the password and bolts a second factor onto it. That's a different purchase from passwordless authentication, which removes the password entirely. Cisco Duo and Microsoft both sell products in each category, and the two are not the same line item on a budget.
Why You Need Multi-Factor Authentication Software
- A stolen password stops being enough. Credential-stuffing attacks assume the password works alone; a second factor breaks that assumption even when the password is already compromised.
- Compliance frameworks name it directly. PCI DSS, HIPAA, and most cyber-insurance questionnaires now ask whether MFA is enforced, not whether it's merely available.
- Help desk resets stop being the weak link. A one-time code or push approval closes the social-engineering gap that a password-only reset process leaves wide open.
- Adaptive policies cut the friction that kills adoption. Risk-based MFA from Ping Identity and RSA only prompts a user when the sign-in context looks unusual, instead of every time.
- Legacy systems and service accounts need coverage too. Command-line tools, on-prem file shares, and machine identities rarely support an agent, which is the specific gap Silverfort exists to close.
Adjacent controls sit in our cybersecurity software category, device-level policy in our endpoint security software category, and hardware-bound credentials in our passwordless authentication software guide.
How We Evaluated
Each product was scored on whether pricing is published, how it bills (seat, usage, or quote), the maturity of its AI and MCP support, and the depth of its public API. Every price below came from the vendor's own pricing page in August 2026, or is labeled as third-party where the vendor's own page could not be confirmed. Full criteria live in our methodology.
1. Cisco Duo
Duo doesn't gate its core MFA behind a premium tier. Push notifications, phishing-resistant options, and a free plan for small teams are all available from the entry point, which removes the usual excuse for not turning MFA on everywhere.
Pricing: Free is $0 for up to 10 users. Essentials is $3 per user per month, Advantage $6, and Premier $9, all billed per seat.
Top Features
- Duo Push and phishing-resistant passkey support
- Risk-based and adaptive access policies
- Device health and trust checks at every login
- Duo Single Sign-On with Duo Directory
- Cisco Identity Intelligence on the Advantage and Premier tiers
- Duo Admin API for provisioning and policy management
Pros
- Free tier covers organizations of 10 or fewer outright
- Core MFA is not held back for a higher tier
- Backed by Cisco's broader identity and network security stack
Cons
- Full zero-trust device visibility is gated behind Premier at $9
- No fully air-gapped on-prem deployment; the Authentication Proxy still needs outbound internet access
AI/MCP Integration: Official, for a different purpose. Duo Single Sign-On for Model Context Protocol lets Duo act as the identity provider securing access to MCP servers and AI agents, currently in beta. It does not expose Duo's own administrative data to an agent the way a conventional MCP server would.
API Integration: Yes. The Duo Admin API covers users, devices, groups, policies, and authentication logs, documented at duo.com/docs/adminapi.
Cloud Based: Yes. On-prem option: partial, through the Duo Authentication Proxy connector.
Platforms: iOS and Android through Duo Mobile, plus browser, VPN, RADIUS, and Active Directory integrations.
Best For: Any company that wants phishing-resistant MFA live this quarter without a six-figure identity project.
Editor score: 4.5/5. The best price-to-capability ratio in this comparison, with almost nothing held back at the entry tier.
2. Microsoft Entra ID
Entra ID doesn't sell MFA as a standalone product. It's a capability layered into the Entra ID license tiers that most Microsoft 365 tenants already carry, which makes it the default MFA vendor for a huge share of the market whether or not anyone chose it deliberately.
Pricing: Free is $0, bundled with Microsoft cloud subscriptions and limited to basic MFA and SSO for up to 10 apps. P1 is $7 per user per month and adds Conditional Access-driven MFA. P2 is $10 and adds risk-based, Identity Protection-driven MFA. The Entra Suite is $12 on top of a P1 base, adding phishing-resistant, passwordless-first governance.
Top Features
- Microsoft Authenticator push, biometric, and OTP support
- FIDO2 security key support for phishing resistance
- Conditional Access-driven step-up MFA
- Risk-based adaptive MFA through Identity Protection on P2
- Windows Hello for Business and certificate-based authentication
- OATH hardware tokens, SMS, voice, and passkeys
Pros
- Free basic MFA ships with subscriptions most companies already own
- Deep native integration across the Microsoft 365 and Azure ecosystem
- Conditional Access lets policy scope down to specific apps or risk levels
Cons
- Real risk-based, phishing-resistant MFA requires stacking P2 or the Suite on top of P1
- The effective per-user cost for full protection reaches $19 once tiers are combined
AI/MCP Integration: Official. The Microsoft MCP Server for Enterprise (built on Microsoft Graph) is in public preview and exposes read-only Entra identity and directory queries through natural language. It's a general Entra data connector, not an MFA-settings-specific tool.
API Integration: Yes. The Microsoft Graph Authentication Methods API is documented at learn.microsoft.com.
Cloud Based: Yes. On-prem option: yes, through AD FS federation and hybrid identity, though the MFA service itself runs in the cloud.
Platforms: Windows, macOS, iOS, Android, and browser-based SSO across the Microsoft 365 and Azure ecosystem.
Best For: Any organization already paying for Microsoft 365 that wants MFA without adding a second vendor relationship.
Editor score: 4.3/5. The free tier is real, but the price of real protection is easy to underestimate until the tiers stack up.
3. Ping Identity
PingOne's pitch is suppressing the prompt, not just issuing it. Its risk engine uses IP reputation, geo-velocity, and time-since-login to skip MFA when the context looks routine, so the friction shows up only when it should.
Pricing: MFA is not sold as its own SKU. PingOne for Workforce Essential is $3 per user per month but excludes MFA; Plus, which includes it, is $6, with a 5,000-user annual minimum. PingOne for Customers starts at $35,000 a year for Essential and $50,000 for Plus.
Top Features
- Adaptive, risk-based authentication that suppresses low-risk prompts
- Passwordless and usernameless FIDO2 biometric login
- Native mobile SDK embedding without a separate authenticator app
- Broad factor support across SMS, email, voice OTP, TOTP, and security keys
- Transaction approval workflows with configurable thresholds
- Admin dashboard with enrollment and SMS-usage analytics
Pros
- Risk-based suppression genuinely reduces MFA fatigue rather than just promising to
- Native SDK embedding avoids forcing users into a separate authenticator app
- Detailed audit logging and per-auth-type analytics out of the box
Cons
- MFA is only available at the Plus tier, forcing a $3-to-$6 jump just to enable it
- The 5,000-user annual minimum on Workforce Plus prices out smaller buyers regardless of headcount
AI/MCP Integration: Official. Ping publishes an MCP server at github.com/pingidentity/pingone-mcp-server covering PingOne's management APIs generally, not scoped to MFA alone.
API Integration: Yes. The PingOne MFA API is documented at developer.pingidentity.com, though it requires the MFA add-on in the environment's bill of materials.
Cloud Based: Yes, multi-tenant SaaS. On-prem option: no, for the PingOne MFA service itself.
Platforms: Web via SSO flows, plus native iOS and Android SDKs for in-app push and biometrics.
Best For: Mid-size and larger workforces that can absorb the 5,000-user minimum and want MFA prompts that adapt to real risk.
Editor score: 4.0/5. Genuinely smart risk suppression, undercut by a pricing floor that has nothing to do with how many people actually need protecting.
4. RSA SecurID
RSA is the one vendor here still selling a hardware token as a first-class option, not a legacy afterthought. The SecurID 700 and FIPS 140-3 series exist because some buyers, mostly financial services and government, need an authenticator that doesn't depend on a phone.
Pricing: ID Plus C1 (cloud-only MFA) is $2 per user per month. E1 (hybrid, on-prem plus cloud) is $4, E2 (adds adaptive access and an SDK) is $6, and E3 is custom-quoted. Hardware tokens, SMS/voice OTP, and Risk AI are priced as separate add-ons.
Top Features
- FIPS 140-3 validated hardware tokens alongside software and push options
- RSA Authenticator App with push, OTP, and QR-code login
- Biometric login through Face ID, Touch ID, and Windows Hello
- Risk AI adaptive access scoring on E2 and E3
- Mobile Lock threat detection covering 60-plus mobile threat vectors
- Broad protocol support across SAML, OIDC, RADIUS, and Kerberos
Pros
- The only vendor here combining FIPS-validated hardware with software and biometric options on one platform
- Real on-prem deployment through an Identity Router or Authentication Manager server license
- Entry tier at $2 undercuts every other seat-priced competitor
Cons
- The $2 entry tier excludes hardware tokens and adaptive access, both sold as add-ons
- No MCP integration of any kind as of this writing
AI/MCP Integration: None documented as of August 2026. RSA publishes no official MCP server, and no community alternative surfaced in research.
API Integration: Yes. The RSA Authentication API is documented through RSA's customer community portal, which requires an account to view full reference docs.
Cloud Based: Yes, on the C1 tier. On-prem option: yes, on E1 through E3, via virtual or hardware appliance.
Platforms: Windows and macOS desktop agents, Windows and Linux server agents, IIS and Apache web agents, and iOS/Android through the RSA Authenticator App.
Best For: Regulated industries that need FIPS-validated hardware tokens and a real on-prem deployment option, not just a cloud SaaS login.
Editor score: 3.9/5. The strongest hardware and compliance story here, held back by zero AI tooling and a headline price that understates real cost.
5. Twilio Verify
Verify is the outlier in this comparison by design: it bills per successful verification instead of per seat, which makes it the only product here where cost scales with actual login volume rather than headcount. Twilio Authy's standalone API was folded into Verify in 2023; the Authy consumer app still exists separately as a TOTP authenticator.
Pricing: $0.05 per successful verification across all channels, plus a small per-channel fee: SMS at $0.0083 per message (US), WhatsApp at $0.0034 per template message (US). Voice, email, push, and TOTP verifications carry no separate channel fee beyond the base rate. Volume discounts are custom-quoted.
Top Features
- Multi-channel OTP delivery across SMS, voice, email, WhatsApp, and push
- TOTP authenticator app support
- Silent Network Authentication with no user action required
- Fraud Guard protection against SMS pumping fraud
- Carrier-approved OTP templates auto-translated into 42 languages
- Passkey and WebAuthn support in pilot
Pros
- Cost tracks real verification volume instead of a flat per-seat charge
- No seat licenses or user minimums of any kind
- Fraud Guard specifically targets a real and costly attack pattern in this category
Cons
- No on-premises or self-hosted option
- Voice, email, and enterprise volume rates require a sales conversation to pin down exactly
AI/MCP Integration: Official, though still in alpha. The twilio-labs/mcp server exposes Twilio's full API surface, more than 1,800 endpoints across 30-plus products including Verify, to AI coding agents.
API Integration: Yes. The Verify API is documented at twilio.com/docs/verify/api with SDKs for Ruby, Python, PHP, Node, Java, and C#.
Cloud Based: Yes. On-prem option: no.
Platforms: REST API with official SDKs across the major backend languages, plus raw HTTP.
Best For: Product teams embedding verification into their own application rather than rolling MFA out to internal employees.
Editor score: 4.4/5. The clearest pricing model in this entire comparison, and the only one that doesn't punish you for having fewer users than a plan assumes.
6. OneLogin
OneLogin's SmartFactor Authentication uses a real-time risk engine, branded Vigilance AI, to adjust how much friction a login gets based on context rather than applying the same static policy everywhere. It's owned by One Identity, itself a Quest Software product line under private-equity ownership since Quest's 2016 spin-off from Dell.
Pricing: Reported at roughly $2 to $3 per user per month for Basic, $4 for Advanced, and $8 for Professional. These figures come from third-party buyer-pricing data (Vendr), not OneLogin's own pricing page directly, since onelogin.com/pricing returned a bot-verification wall during research. Treat them as directionally accurate but unconfirmed on the vendor's own site as of August 2026.
Top Features
- OneLogin Protect OTP and push authenticator app
- SmartFactor risk-based adaptive authentication via Vigilance AI
- WebAuthn and biometric support through Windows Hello and Touch ID
- SMS, voice, and email OTP options
- Third-party factor support for Google Authenticator, Duo, and YubiKey
- Policy-based contextual MFA enforcement
Pros
- SmartFactor adjusts friction dynamically instead of applying one static rule everywhere
- Accepts third-party authenticators rather than forcing a single app
- Official MCP server already available for admin automation
Cons
- Pricing could not be independently confirmed on OneLogin's own site due to a bot-verification wall
- No fully self-hosted or on-prem deployment option
AI/MCP Integration: Official. The onelogin-mcp server, published under OneLogin's own GitHub organization, covers users, roles, apps, and authentication policy management.
API Integration: Yes. A REST API is documented at developers.onelogin.com, secured with OAuth 2.0.
Cloud Based: Yes. On-prem option: no full deployment; hybrid support only through on-prem AD or LDAP connectors.
Platforms: Web and browser SSO, plus OneLogin Protect on iOS, Android, watchOS, and Android Wear.
Best For: Teams that want risk-based MFA without forcing every employee onto one specific authenticator app.
Editor score: 3.8/5. A genuinely capable risk engine, marked down for a pricing page that couldn't be verified directly during this research.
7. Silverfort
Silverfort solves a problem the other six can't touch: MFA for systems that will never run an agent. Legacy servers, command-line tools, and non-human service accounts sit outside the reach of conventional MFA, and Silverfort enforces authentication at the network and directory layer instead of on the endpoint itself.
Pricing: Not published anywhere in the funnel. Four named tiers (Core, Plus, Advanced, Enterprise) plus an à la carte module catalog and three support levels all route to "Get a quote," with no currency or figures shown at any step.
Top Features
- Agentless Universal MFA extending to legacy systems and command-line tools
- Runtime Access Protection enforcing policy at the moment of authentication
- Non-human identity and AI-agent authentication security
- Authentication Firewall for risk-based allow and deny decisions
- Identity threat detection and response
- Identity security posture management with a full identity graph
Pros
- Covers service accounts and legacy infrastructure no other product on this list reaches
- Agentless architecture avoids a rollout project on every protected endpoint
- Genuine on-prem deployment alongside cloud and hybrid environments
Cons
- Zero public pricing anywhere, so budgeting requires a sales call before any shortlist decision
- Public API reference documentation sits behind a customer login rather than a public URL
AI/MCP Integration: Official. Silverfort hosts an MCP server at raven.silverfort.io/mcp that lets AI agents list, update, and delete security policies and pull risk profiles for users, devices, and resources.
API Integration: Partial. An API exists and is referenced in MCP and partner-integration documentation, but full reference docs require a customer login.
Cloud Based: Yes. On-prem option: yes, with an agentless architecture that connects directly to on-prem Active Directory and legacy infrastructure.
Platforms: Active Directory and Entra ID, Windows and Linux/Unix servers, legacy and command-line systems, service accounts, OT networks, and hybrid or multi-cloud infrastructure.
Best For: Organizations with legacy systems, command-line access, or service accounts that a conventional agent-based MFA product structurally can't cover.
Editor score: 4.2/5. The only real answer in this list to a genuine, unsolved MFA gap, priced entirely behind a sales conversation.
More breakdowns live in our IT security and DevOps blog category.
Comparison Table
| Tool | Best For | Starting Price | Standout Feature | AI-MCP Support | API Integration |
|---|---|---|---|---|---|
| Cisco Duo | Fast rollout, small and mid-size teams | $3 per user monthly | MFA not gated behind a premium tier | IdP for MCP clients | Yes, admin API |
| Microsoft Entra ID | Existing Microsoft 365 tenants | $7 per user monthly (P1) | Deep native Microsoft 365 bundling | Official, preview | Yes, Graph API |
| Ping Identity | Mid-size and larger workforces | $6 per user monthly | Risk-based prompt suppression | Official server | Yes, MFA API |
| RSA SecurID | Regulated, hardware-token buyers | $2 per user monthly | FIPS 140-3 hardware tokens | None documented | Yes, community portal |
| Twilio Verify | Product teams building their own login | $0.05 per verification | Usage-based, no seat minimums | Official, alpha | Yes, REST API |
| OneLogin | Flexible third-party authenticator support | ~$2-3 per user monthly (unconfirmed) | SmartFactor risk engine | Official server | Yes, REST API |
| Silverfort | Legacy systems and service accounts | Custom-quoted | Agentless MFA for unmanaged systems | Official server | Partial, gated docs |
How to Choose
- Identify the billing unit before comparing sticker prices. Per-seat, per-verification, and quote-only are three different math problems, not three prices on the same scale.
- Check what's actually included at the entry tier. Ping Identity's cheapest plan excludes MFA outright, and RSA's excludes hardware tokens.
- Look for hidden minimums, not just per-user rates. Ping Identity's 5,000-user annual floor changes the real cost for anyone below that headcount.
- Decide whether legacy systems and service accounts are in scope. Most products here can't cover them without an agent; Silverfort exists specifically because they can't.
- Separate an official MCP server that exposes the vendor's own data from one that uses the vendor as an identity provider for other MCP clients. Duo does the latter, not the former.
- Confirm phishing resistance in writing, not just "MFA supported." SMS and voice OTP are weaker factors than a push notification, TOTP app, or hardware key.
- Budget for add-ons separately from the headline price. RSA's Risk AI and hardware tokens, and Entra ID's P2 or Suite stacking, both change the real number substantially.
What This Actually Costs
Take a 200-employee company adding MFA for the first time. Cisco Duo Essentials at $3 per user per month runs $7,200 a year. RSA SecurID's C1 tier at $2 looks cheaper at $4,800, but it excludes hardware tokens and adaptive access, so a realistic E2 deployment at $6 comes to $14,400. Microsoft Entra ID P1 at $7 runs $16,800, and reaching the risk-based protection most buyers actually want at P2 pushes that to $24,000. Ping Identity's Plus tier at $6 would price at $14,400 for 200 seats, except its 5,000-user annual minimum means the company pays for 5,000 seats regardless of actual headcount.
Now take a consumer application authenticating 200,000 logins a month, most by push or TOTP with no per-message channel fee. Twilio Verify's base rate alone runs $10,000 a month, or $120,000 a year, which sounds steep until you compare it to a seat-priced product charging per employee account instead of per login: at that volume, usage-based pricing is exposing a cost that seat-based competitors would otherwise hide inside a flat per-user number that has nothing to do with how often each user actually authenticates.
Final Thoughts
There's no single winner here, because "MFA software" covers three genuinely different purchases. For a company rolling out MFA to employees for the first time, Cisco Duo is the pick: it's the only vendor that doesn't gate real protection behind an upsell tier, and the free plan removes the excuse for organizations under 10 people entirely.
For a product team building authentication into an application rather than an internal rollout, Twilio Verify is the better fit. Usage-based pricing means the bill reflects actual login volume, not a headcount guess made at contract signing.
And if the actual problem is a legacy server, a command-line tool, or a service account that no conventional MFA agent can reach, none of the first six vendors solve it. Silverfort does, and that's worth a sales call even though it's the one product here with no public price to compare against the rest.
