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Engineering 19 March 2026 10 min read

Why 99% accuracy isn't enough when the output is your tax return

Building SpeaktoFinance taught us the brutal economics of the last 1%. Here's how we closed the gap.

This post is a placeholder while we get the editorial pipeline online. The shape and rhythm of the page is right; the words are coming. In the meantime, here's a sketch of what this piece will cover.

The premise

Building SpeaktoFinance taught us the brutal economics of the last 1%. Here's how we closed the gap. The full piece will walk through the specific decisions, the trade-offs we considered, the ones we got wrong, and what we'd do differently with the benefit of three months on the other side.

What we're publishing

Field notes from production builds. No abstractions, no recycled threads. If we ship something we'll write about why it worked, why it broke, and what we'd test if we were starting fresh tomorrow.

  • Honest write-ups of features that flopped
  • Architecture diagrams from systems handling real load
  • Concrete numbers, accuracy, latency, dollars saved, hours back
  • Eval rigs and prompts we'd actually use ourselves

Stay close

Subscribe to the dispatch below if you want the full post when it lands. One email a month, no recaps, no churn.

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