Andrew Crossley

AI and product development questions, answered

Practical answers about applying AI inside real products and companies — what it costs, what it changes about the product role, and where it genuinely reduces cost or improves experience.

Will AI replace product managers?

No, but it is removing a large part of what product managers used to spend their week doing. AI already writes specs, summarises research, drafts tickets, analyses feedback and builds prototypes. What it cannot do is decide what a company should refuse to build, hold accountability for a metric, or persuade a room. Roles weighted towards documentation are shrinking; roles weighted towards judgement are becoming more valuable.

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How do startups use AI?

Startups use AI in three places: inside the product as a feature that completes a user task, inside operations to remove repeated manual work, and inside go-to-market for research, content and support triage. For a small company, internal operational work is often the easiest first use to measure because the baseline task already exists and the team can compare time, quality and cost before and after.

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Which AI tools should founders use?

Founders need four categories, not forty tools: a frontier chat assistant for thinking and drafting, an AI-assisted build tool for prototypes and MVPs, a research and synthesis tool for customer and market work, and automation for repeated operational tasks. Pick one per category, use it deeply, and add another tool only when a specific recurring task justifies the subscription and context-switch cost.

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How much does it cost to build an AI application in the UK?

For a UK founder, a focused commercial AI MVP with one core journey typically sits around £12,000–£25,000 in the pricing model used on this site. A prototype or narrow validation build can be roughly £3,000–£8,000. Multiple user roles, RAG or agentic workflows, several integrations, sensitive-data requirements or bespoke design can push the build above £25,000. Model and infrastructure running costs should be measured separately per successful customer task.

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Do I need an AI product consultant or a developer?

Choose an AI product consultant when the uncertainty is the customer problem, scope, AI use case, evaluation, pricing or what should be built at all. Choose a developer when those decisions are validated and the bottleneck is implementation capacity. Early founders often need a product-led build that combines both: senior product judgement to cut the scope and enough engineering execution to ship the one journey that matters.

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How can AI reduce operating costs?

AI can reduce operating cost when it shortens repeated, reasonably consistent tasks such as support triage, data extraction, research, first-draft responses and QA. Do not start with a generic savings percentage. Measure the current handling time, error or correction rate and cost of the target task, pilot the AI workflow with human review, then compare the full post-AI cost including model usage, tools and review time.

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How can AI improve customer experience?

AI improves customer experience mainly by shortening time-to-value and removing waiting: answers grounded in your own documentation, faster onboarding through assisted setup, proactive detection of stuck users, and guidance based on relevant product context. It damages experience when it hides humans, guesses confidently, or personalises in ways the customer did not expect.

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THE FRAMEWORK

The Crossley Method: idea to first revenue in seven stages

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  1. STAGE 1DiscoverWeek 1
  2. STAGE 2ValidateWeek 2
  3. STAGE 3PrototypeWeek 3
  4. STAGE 4Build MVPWeeks 3-4
  5. STAGE 5LaunchWeek 5
  6. STAGE 6First RevenueWeek 6
  7. STAGE 7ScaleOngoing