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The specialist you need probably isn’t in the room.

Bring their perspective in anyway. The persona library gives AI a real responsibility, working methods, questions and boundaries, so the conversation goes further than “act as an expert”.

The complete library

294 AI personas across 33 collections

Engineering, leadership, governance, security, operations, finance, people, legal, customer experience and specialist fields.

Every collection is included.

Find the challenge you haven’t thought to ask.

A customer export can look finished to its builder while still leaving awkward questions about privacy, permissions and usability. A different perspective can make those questions visible.

Our personas give AI a detailed brief for that contribution: what to examine, how to work and where to stop. They’re tools for thinking and doing, not a claim that a model becomes a qualified professional.

See personas examine a proposal →

“Let customers export their records.”

  • Architecture: Does the download enforce the same permissions as the screen?
  • User experience: Is it clear which records will be included?
  • Review coaching: Does the feedback explain the rule and the test the author needs?

Use the right perspective at the moment it can change the work.

The power isn’t in pretending an AI persona is a person. It’s in giving the model specific responsibilities and questions to bring to the work.

A persona can help frame the question, challenge a weak assumption, examine a design, create difficult test scenarios, translate specialist language or review evidence against an explicit responsibility. The harness can bring different personas forward as the work changes.

DiscoverFind the users, outcomes, risks and unanswered questions before a solution hardens around the wrong idea.
ShapeChallenge intent, architecture, data, commercial assumptions and the likely impact beyond the obvious code change.
DesignReview prototypes through accessibility, cognitive load, customer, brand and domain-specific perspectives.
ProveCreate representative scenarios, probe failure paths and ask whether the evidence really supports the claim.
LeadThink through people, finance, portfolio, adoption and communication consequences around the technical work.
Engineering specialist

Code Review Specialist

Bring them in when: reviews are inconsistent, senior engineers have become a queue, or technically correct feedback is damaging confidence and trust.

They’ll focus on: respectful feedback, shared standards, risk-based review depth, mentoring and the flow of knowledge through the team.

View the profile →

Customer perspective

Grumpy User

Bring them in when: the team loves the feature but you’re not sure a busy, impatient customer will tolerate it.

They’ll focus on: needless steps, unclear language, cognitive load and the small bits of friction polite reviewers often wave through.

View the profile →

Commercial perspective

CFO Perspective

Tests the cash, assumptions, downside and route to a return when the proposal sounds exciting but the numbers haven’t been made to work.

View the profile →

People perspective

Difficult Conversation Facilitator

Helps you prepare when the message matters, the relationship matters, and a clumsy sentence could make a hard situation worse.

View the profile →

Risk perspective

Stress-Test & Investor Challenge Architect

Finds the assumptions, missing counter-moves and convenient optimism before reality gets a chance to do it more expensively.

Find the challenge specialists →

294 perspectives. Check out the list below to find the ones that’ll make a difference in your work.

Browse all 33 collections. The names and counts below come directly from the current premium library.

Can’t find the perspective you need? Subscribers have a direct line to our persona developers and can request new personas for the library.

Engineering and delivery

82 personas. Develop, review and test software, with specialist help for architecture, accessibility and the platforms your project depends on.

Governance and resilience

82 personas. Examine obligations, controls and dependencies, and prepare the evidence a responsible human needs before making the call.

Leadership and business

81 personas. Work through commercial decisions, people challenges and competing priorities with more than one professional perspective.

Operations and specialist work

49 personas. Get into the practical detail of running services, delivering projects, managing information and working in specialist settings.

Bring in the specialist your work needs.

Start with a general conversation while you’re still finding the shape of the problem. When you hit a question that needs depth, bring in the relevant specialist and give them the facts, constraints and outcome you’re working towards.

Then extract what matters. Pass the decision, evidence and constraints to the next specialist rather than dumping the whole conversation on them. You’re conducting the work, not asking 294 voices to speak at once.

A useful perspective, not a substitute for a person.

A persona is a structured perspective, not an employee, stakeholder, qualified adviser or approval authority. It can reveal the question you haven’t asked. It can’t supply missing organisational truth or own the consequence of your decision.

Named responsibilityWhat this specialist is here to examine, and what sits outside the role.
Working methodThe frameworks, habits, evidence and questions that shape the response.
Useful challengeHow the persona tests assumptions, edge cases and consequences instead of merely agreeing.
Human authorityWho still needs to validate the evidence, make the decision and accept the outcome.

One annual subscription. The whole library.

Every plan includes all 294 personas and all 33 collections. You’ll get every new persona and every improvement we make to an existing persona throughout your active subscription. Teams allocate access to named people. Each person has their own key and can use up to three machines.

Annual persona subscriptions. All prices exclude VAT.
PlanNamed accessAnnual price + VATChoose your plan
Individual1 person£249 / year + VATBuy Individual →
Small teamUp to 10 people£999 / year + VATBuy Small team →
DepartmentUp to 50 people£2,499 / year + VATBuy Department →
DivisionUp to 100 people£4,999 / year + VATBuy Division →
Large teamUp to 200 people£7,999 / year + VATBuy Large team →
EnterpriseUp to 300 people£9,999 / year + VATBuy Enterprise →
UnlimitedUnlimited named people£12,499 / year + VATBuy Unlimited →

Choose your plan to continue to secure checkout. Your annual subscription renews each year. After purchase, open My account to manage your licences, machines and downloads, or allocate your team’s seats.

Seats can be reassigned when people change roles or leave. The library uses ordinary Markdown files, so it isn’t tied to one AI provider. Your AI service is separate.