free tools
Practical answers instead of an AI strategy deck. Each tool does one job, runs in your browser, and needs no sign-up. The code is open source, so your team can check the maths or host its own copy.
the tools
- ai roi & token cost estimatorEstimate monthly Claude API cost, cost per task and ROI for an AI workload, with prompt caching and Batch API discounts, at current list prices.
- eu ai act compliance auditorAnswer a few questions about one AI system and get its EU AI Act risk tier, the obligations for your role, the dates they apply, and article references.
- agent workflow fit scorerScore how well a business process fits an AI agent workflow, see the hours it could save, and get a suggested architecture: full automation, review, or copilot.
- ai build vs buy calculatorCompare the three-year cost of buying a SaaS AI tool, building a custom agent workflow, or keeping the work manual, with break-even months and a cumulative chart.
- ai accuracy proof calculatorCheck whether an AI vendor's accuracy claim is backed by their test set, and how many test cases you need to prove a target accuracy, using Wilson intervals.
see them used
The agent architecture teardowns on the blog run real-world workloads through these numbers, from lease abstraction to freight audit. Those posts and their diagrams are open source too.