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Insights

The Nexel Brief

Short essays on applied AI — what to build, what to avoid, what's worth piloting this quarter.

The 90-day AI roadmap for a small business

Three months. Three deployments. Real revenue. Here's the exact playbook we use for $1M–$20M companies.

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Prompt injection: the threat hiding in your chatbot

Everything we've learned defending production LLMs — and the five mitigations we ship by default.

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Calculating AI ROI: the simple model that holds up

The spreadsheet we hand to clients, with formulas you can copy in 10 minutes.

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The agent boom: what's hype and what's already shipping

Multi-step AI agents are everywhere. Here's where they actually save money in 2026 — and where they still flop.

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Five AI moves any local shop can make this month

None take more than a weekend. All move a real number — bookings, reviews, repeat customers.

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How we test LLM apps: the eval stack we trust

The frameworks, the dataset patterns, the gotchas. Steal whatever's useful.

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Lead scoring with an LLM (without losing your CFO)

The architecture, the cost, the tuning. A blueprint we've shipped a dozen times.

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Voice agents that don't feel like voice agents

The latency budget, the script style, the handoff protocol.

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Bias tests we run on every model before shipping

An honest checklist — including the awkward ones nobody else publishes.

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