Verisum

Verisum is a web and API platform for organisations that need to govern AI decisions and document accountability with cryptographic proof. Its tools cover three areas: Govern supports surveys, AI system and vendor registers, policy generation, shadow-AI tracking, model registries and compliance frameworks; Monitor adds drift monitoring, incident logging, escalation workflows, runtime signals and staff declarations; Prove supports decision ledgers, approvals, attestations, public verification and provenance records. Verify can anchor attestations, incident locks and provenance records to EVM-compatible blockchains, including Ethereum, Polygon and Arbitrum. The HAPP Protocol provides REST APIs for approvals, provenance, exchanges, incident locks and public verification. Plans range from Explorer, free forever, to Core at £129/month and Assure at £499/month; Verify has custom pricing. Core is positioned for startups and scale-ups using AI, while Assure and Verify address regulated or high-stakes deployments. Verisum says data is encrypted in transit with TLS 1.2 or above and at rest with AES-256. Its DPA says customers must not submit UK GDPR special category data.

Verisum brings AI governance, monitoring and proof tools into one platform, with plans for different organisational needs. The special-category-data restriction is important to consider before submitting information.

Verisum suits organisations governing AI systems, with Core positioned for startups and scale-ups preparing for audit or diligence. Assure and Verify are aimed at regulated industries, multi-system deployments and high-stakes AI use.

Verisum is a cloud platform for governing AI systems, monitoring their operation and producing evidence about decisions. It suits organisations building an AI oversight programme, especially teams preparing for audit or working in regulated settings. Its breadth is useful, but the entry plans have tight capacity limits and the special-category-data restriction rules out some workflows.

Overview

Verisum divides its tools into Govern, Monitor and Prove. Govern brings together organisation surveys, AI system and vendor registers, policy generation, shadow-AI tracking, model registries, regulatory feeds and compliance frameworks. Monitor covers drift monitoring, incident logging, escalation workflows, runtime signals, staff declarations and team management. Prove adds public verification, decision ledgers, incident locks, attestations, approvals, Trust Exchange, provenance graphs and on-chain anchoring.

This is a broader proposition than a standalone inventory or policy tool: it aims to connect governance work with operational monitoring and evidence. The trade-off is that what an organisation can do depends on its plan’s system, user and workflow allowances, with some proof and integration capabilities reserved for Verify.

Key features

Verisum supports AI system inventory, risk assessments, policies and controls, alongside the UK AI Code, EU AI Act, NIST RMF and ISO 42001 frameworks. That combination can help teams organise governance across multiple frameworks, while registers and monitoring workflows link policy work to ongoing oversight.

Verify anchors attestations, incident locks and provenance records to EVM-compatible blockchains, including Ethereum, Polygon and Arbitrum, so they can be independently verified. The HAPP Protocol exposes REST APIs for approvals, attestations, provenance, exchanges, incident locks and public verification. These capabilities are aimed at organisations that need to share or verify evidence across organisational boundaries; they are likely more than a small team needs at the start.

Verisum says data is encrypted in transit with TLS 1.2 or above and at rest with AES-256 through its managed database provider. Its DPA also says the service is not designed for UK GDPR special category data and customers must not submit it. That prohibition is a material constraint for organisations whose governance workflows could involve such data, regardless of plan.

Pricing

Verisum is freemium: Explorer is free forever, there is no free trial, and paid plans start at £129/mo. The plan allowances make the free tier useful for a small initial assessment, not a full governance operation.

• Verisum Explorer — free. Includes 1 assessment, 1 system, 1 vendor, 1 policy, public verification and CSV export. Its one-system and one-policy caps make it a narrow starting point rather than a practical home for a growing inventory.
• Verisum Core — £129 a month. Billed £129/month or £1,238/year (save 20%). It allows 2 AI systems, 10 vendors, 3 AI policies/month, 50 staff, 2 playbooks and 5 seats. This is positioned for startups and scale-ups using AI or preparing for audit or diligence; the two-system cap and five-seat limit may constrain broader programmes.
• Verisum Assure — £499 a month. Billed £499/month or £4,790/year (save 20%). It includes 6 AI systems, unlimited vendors, 10 AI policies/month, 250 staff, unlimited incidents, 10 playbooks and 10 users. Its higher allowances and unlimited incidents suit regulated industries and multi-system deployments, though it still caps systems, policy generation and users.
• Verisum Verify — custom pricing. It offers unlimited assessments, systems and users, cross-organisation Trust Exchange, API access and SSO/SAML. It is aimed at enterprises, regulated industries and high-stakes AI deployments, including organisations under the EU AI Act. The custom price means it is a less transparent starting point for budget planning.

Platforms

Verisum is available through the web and API, with cloud deployment. API access is a Verify plan feature, so teams should distinguish the platform’s API availability from what their chosen plan includes.

Who it's for

Core is positioned for startups, scale-ups using AI and teams preparing for audit or diligence. Assure targets regulated industries, multi-system AI deployments and teams issuing proofs to partners. Verify is intended for enterprises, regulated industries and high-stakes deployments, including organisations under the EU AI Act. Teams that only need a small inventory may find Explorer sufficient initially, but its one-system and one-policy limits leave little room for expansion.

Pros and cons

• Pros: Govern, Monitor and Prove cover registers, operational oversight and evidence in one platform, which is relevant to teams that need more than policy documentation alone.
• Pros: Multiple named frameworks, public verification and blockchain-anchored records support structured governance and independently verifiable proof workflows.
• Pros: Explorer provides public verification and CSV export at no cost, giving a small team a way to begin with one system and one assessment.
• Cons: Explorer’s one-system and one-policy allowances, and Core’s five seats and two-system cap, limit the scope of the cheaper options.
• Cons: Verify’s custom pricing and its position as the tier for API access and SSO/SAML make budgeting and access to advanced integration less straightforward.
• Cons: Customers must not submit UK GDPR special category data, a significant boundary for organisations handling sensitive information in governance workflows.

Alternatives

For teams weighing other governance and risk tools, AI Governance Software is the broader category. Riskonnect is a paid option available on Android, iOS, API and web; its pricing depends on project size, complexity and customization, so it may suit buyers considering an implementation shaped around those factors.

ComplyLayer offers a free plan with unlimited AI systems and use cases, making it worth considering when inventory scale matters more than Verisum’s proof workflows. Trusys AI has a free Starter tier with one application and evaluation allowances, and a free trial; it is an alternative for teams comparing application evaluation and metrics capacity.

Openlayer Guardrails has a free Basic plan with one member, five projects and 20,000 inference logs per month, a fit to consider when those project and log limits align with a team’s needs. Prufer offers a free plan, but audit data is retained for seven days and the plan has no uptime guarantee or SLA credits; that trade-off matters to teams evaluating retention and service commitments.

AI Verify is free and its Toolkit is open source under the permissive Apache 2.0 license, making it an option for organisations prioritising those terms. AIGovernr has a Professional plan at $79 USD/month with website scans and governance reports, which may suit buyers focused on those outputs. SAS/STAT is a paid alternative with pricing available by contacting SAS.

Verdict

Verisum is a sensible fit for organisations that want governance registers, operational monitoring and verifiable evidence under one roof, particularly teams preparing for audit or operating in regulated environments. Its strongest case is the breadth from governance through proof; look elsewhere if you need more capacity at a lower tier, require API access without Verify, or handle UK GDPR special category data in the service.