Five ways in. Published prices.
An audit or a proof of concept to start, a design pair or a build team to deliver, and programme oversight you can buy on its own. Prices are published because a buyer should be able to budget before booking a call.
- engagements, every price published
- 5
- the smallest fixed-price way in
- £20k
- from kickoff to a working proof of concept
- 2–4 weeks
- people on the largest delivery team, every one of them senior
- 3
Two ways in
Low-commitment and fixed-price, designed to end in a decision rather than a dependency.
Agent-Readiness Audit
Where agents add value, where they don't, and what to do first.
Pick this when the board has asked for an AI plan and you need a costed, defensible sequence before committing budget.
Read itAgentic Proof of Concept
Pick the workflow. Two to four weeks later, look at a working thing.
Pick this when you already know the workflow you want to attack and a working thing will persuade the sceptics that a plan will not.
Read itDelivery
Design it properly with a pair, then build and ship it with a team of three under partner oversight.
Agentic Design Team
A pair who design the agentic systems, and the infrastructure to run them at scale.
Pick this when pilots worked but nothing scales, and the operating model and the architecture have to be designed together.
Read itAgentic Build Team
A team of three who build and ship it, under partner oversight.
Pick this when the capability has to be built and shipped inside your estate, not described in a document.
Read itOversight
An AI programme director or fractional delivery lead, governing the whole programme including the parts other suppliers are building.
The lowest-commitment way to start.
The two lowest-commitment ways to start are Programme & Delivery Management at £18,000–£35,000 a month, buyable on its own with no requirement that Tenhaw builds anything and cancellable on 30 days' notice either way, or an Agentic Proof of Concept at £20,000–£55,000 fixed over two to four weeks.
Programme & Delivery Management
One senior lead running governance, forecasting and supplier management across whoever is building. The bottom of the band is roughly three days a week. Cancellable on 30 days' notice either way.
£18k–£35k/moRead it →Bounded and fixed priceAgentic Proof of Concept
One real workflow, built against your data in your environment, paired with your engineers throughout. Ends on a date with a working thing and a costed scope for production as a separate decision.
£20k–£55kRead it →The five engagements, compared.
Same table we would draw on a call. Prices are fixed in writing before an engagement starts, and monthly rates derive from the published rate card.
| Engagement | Who turns up | Investment | How it ends | Pick this when |
|---|---|---|---|---|
| 01Agent-Readiness AuditStart here | A senior operator alongside James Rooney, who leads every audit personally, with specialist input where the frontier test needs it.No standing build team: this is an assessment. James Rooney leads every audit personally at the published partner rate of £1,560 a day, and where the frontier test in weeks three to five needs an engineer, that person is an associate he has already delivered alongside, at the published senior rate of £1,250. | £30k–£90k6–8 weeks | Fixed price, fixed deliverableOn a date, with a fixed-price deliverable: the board readout and the costed plan. Nothing rolls on. | You need a costed plan the board can act on. |
| 02Agentic Proof of ConceptFastest proof | One or two Tenhaw engineers, pair-programming with your people throughout.Yes, and they are the whole team. One or two forward-deployed engineers at the published senior practitioner rate of £1,250 a day, each one someone James Rooney has already delivered alongside. | £20k–£55k2–4 weeks | Fixed price, fixed deliverableOn a date, with a fixed-price deliverable: a working system, the requirement corpus, and a costed scope for production as a separate decision. Nothing rolls on. | You know the workflow, and need proof it can be done. |
| 03Agentic Design Team | Two senior practitioners, an operating-model lead holding the interim Head of AI seat and an agentic architect.No build engineer: this rung designs what gets built rather than building it. Both practitioners are at the published senior rate of £1,250 a day, and the architect signs the architecture off with your CTO. | £35k–£55k/mo2–4 months | 30 days' notice either wayMonthly, cancellable on 30 days' written notice either way. It ends on the sequenced build plan, which you can execute with us, yourselves or a third party. | Pilots work, nothing scales past the team that built them. |
| 04Agentic Build TeamFull delivery | Three forward-deployed practitioners (interim agentic lead, engineer, adoption lead) under partner oversight from James Rooney.Yes. One forward-deployed engineer building in your repositories at the published senior practitioner rate of £1,250 a day, alongside the interim agentic lead at the same rate and the adoption lead at the associate rate of £950. Three people, and the team does not get bigger than that. | £70k–£85k/mo6–12 months | 30 days' notice either wayMonthly, cancellable on 30 days' written notice either way. The exit date and the taper are agreed at kickoff, and you own all deliverables, documentation and code on payment. | It has to be built and shipped inside your estate. |
| 05Programme & Delivery ManagementSupplier-agnostic | One senior programme lead, an AI programme director or delivery director depending on the shape of the programme, with partner oversight from James Rooney and scaling with programme size. Available fractionally, from around three days a week.No build engineer, deliberately: this rung governs whoever is building, including when that is nobody from Tenhaw. The lead is at the published senior practitioner rate of £1,250 a day, with partner oversight on top. | £18k–£35k/moProgramme duration | 30 days' notice either wayMonthly, cancellable on 30 days' written notice either way. Bought on its own with no build commitment attached, and handed over to your own people on an agreed date. | Several suppliers, and nobody owns the whole. |
Rates are exclusive of VAT and of pre-agreed expenses at cost. Fixed-price engagements carry a modest premium over the day-rate equivalent, because the scope risk transfers to us rather than to you. See the day rates and how they compare.
What we do not sell.
Four things a buyer would reasonably assume are available and are not. Better here than in week three of procurement.
A managed service, or 24/7 run-and-support after handover
Engagements are designed to end with your permanent team owning the thing. We do not operate it for you afterwards. If a support function has to exist around it, that is your operations team or a different supplier, and we will help you specify what it needs to cover.
Model, platform or licence resale
Inference, platform and evaluation costs sit with you, on your own contracts, at cost. Tenhaw does not resell them and takes no margin on them. It is also why the audit estimates run cost per workflow rather than quietly absorbing it into a build price.
Undirected engineering capacity by the head
We do not place people by the day into someone else's plan. Senior people are supplied on an engagement, with partner oversight behind them and accountability for an outcome, which is what lets us publish a rate card and price whole engagements against it.
A team larger than three on a build engagement
A build team is three practitioners plus partner oversight, and it does not scale by adding bodies. A programme needing hundreds of people mobilised across many countries is a large firm's work, and we will tell you that rather than bid for it.
What we do hold as a supplier, including screening, sub-processors, cover levels and the assurance still in progress, is published on the security page.
Almost everyone starts on one of two rungs.
Start with the audit if the question is where to invest across the organisation. Start with a proof of concept if you already know the workflow and the question is whether it can be done at all.
Agent-Readiness Audit
Where agents add value, where they don't, and what to do first.
- Boards that have asked for an AI plan and received slideware
- Organisations whose Copilot or Gemini rollout has stalled, with no diagnosis of why
- Businesses where shadow AI has spread across functions and nobody holds an inventory
Agentic Proof of Concept
Pick the workflow. Two to four weeks later, look at a working thing.
- Organisations that already know which workflow they want to attack
- Leadership teams who need something working to unlock the real budget conversation
- Businesses where a plan will not persuade the sceptics but a demonstration might
Some clients run the proof of concept first because a working thing persuades internal sceptics that a plan does not. Oversight is the exception to the ladder: programme and delivery management can be bought on its own, including for programmes other suppliers are building.
What holds across all five.
Accountable senior people
James Rooney provides partner oversight on every engagement, and leads the audits personally. The people on your engagement are not substituted without your written agreement.
How the associate model works→Prices you can check
Every figure derives from a published day-rate card at 20 billable days a month, so you can do the arithmetic rather than taking a range on trust.
See the rate card→A production increment a month
Delivery engagements commit to something measurable reaching production each month and report against it. A month with nothing in production is reported as a failed month.
How we work→Answers your CISO will ask
Screening, data handling, sub-processors, and the assurance we hold today versus the assurance still in progress.
Read the security position→Want the argument rather than the index? The full services page carries the ladder in detail, the team shapes and the fit test.
Prefer to talk it through? Ask us on a discovery call →
Not sure which rung you are on?
Thirty minutes with James Rooney. We will tell you which engagement fits, and say so if the answer is none of them.
Most organisations start with a fixed-price Agent-Readiness Audit · £30k–£90k · 6–8 weeks