Dev Notes

Technical writing from the Future AGI team

Evaluation patterns, observability techniques, and lessons from building AI systems in production.

Multi-step AI agent chain trace visualization
Observability

Tracing AI Agent Chains: What Observability Tools Get Wrong

Most observability tools were built for microservices, not agent chains. Here is what breaks when you apply them to LLM pipelines without adjustment.

Abstract representation of accuracy vs hallucination rate tradeoff
Metrics

Hallucination Rate vs. Accuracy: The Metrics Teams Actually Use

A breakdown of the evaluation metrics that matter in production AI, and why hallucination rate and answer accuracy measure different failure modes.

Diagram of a RAG evaluation pipeline
Guides

Building an Evaluation Harness for RAG Systems

Step-by-step guide to setting up automated evaluation for retrieval-augmented generation pipelines, covering retriever quality and answer faithfulness.

Abstract signal drift visualization
Observability

When Your AI Agent Drifts: Early Warning Signs

Model behavior shifts without you changing a line of code. Learn the leading indicators that catch drift before users report it.

Abstract representation of scoring workflow with human and AI judges
Evaluation

Scoring LLM Outputs: Rubrics, Model Judges, and Human-in-the-Loop

Three approaches to scoring LLM outputs, when each one fits, and how to combine them for production-grade evaluation coverage.

LangChain pipeline with observability layer
Guides

Integrating Observability Into Your LangChain Pipeline

A practical walkthrough for adding trace logging and evaluation hooks to an existing LangChain agent without restructuring your code.

Abstract post-mortem analysis visualization
Engineering

Production AI Failures We Have Seen: A Technical Post-Mortem

Four failure patterns from real AI deployments, how they went undetected for weeks, and the evaluation gaps that let them slip through.

Abstract cost impact visualization
Insights

The Hidden Costs of AI Hallucinations

Hallucinations create measurable costs in support volume, correction work, and lost deals. Learn how to estimate their effect on your product.

LLM benchmarking process visualization
Guides

Benchmark Your LLM: A Practical Engineering Guide

Build internal benchmarks around real use cases rather than leaderboard tasks, then run them continuously as your model changes.

Comparison of AI testing and traditional software testing
Engineering

How AI Agent Testing Differs From Software Testing

Unit tests catch deterministic code regressions. LLM variability calls for another testing model. Here is how to adjust the approach.

Abstract representation of evaluation-first development
Company

Why Future AGI Began With Evaluation

Future AGI began with a way to measure AI quality, not a dashboard or API. Here is why evaluation came first.