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Field notes

Notes from shipping.

Writing from the engineering team. No thought leadership. Just what we learned from putting AI systems into production this month.

VOICE · 8 MIN READ

Sub 700ms voice agents are not magic. They are a budget.

Breaking down where every millisecond goes in a phone agent, and where to cut without breaking the experience.

VapiLatency
RAG · 11 MIN READ

Why your RAG system is wrong about 30% of the time

Retrieval is not the hard part anymore. Chunking, reranking, and the question rewriter are where the bodies are buried.

RAGEvals
VISION · 6 MIN READ

YOLOv8 vs RT DETR for warehouse deployment

What we learned shipping object detection on $400 edge devices. Spoiler: latency and labels matter more than mAP.

YOLOEdge
AUTOMATION · 7 MIN READ

n8n at 3000 workflows. What breaks.

Scaling an n8n instance past the marketing demo. Memory, queues, idempotency, and the workflow patterns that survive.

n8nScaling
EVALS · 9 MIN READ

Vibes are not an evaluation strategy

How to build a real evaluation harness for a chatbot in three days. Not a perfect one. A real one that you will actually run.

EvalsQuality
VOICE · 5 MIN READ

Why your outbound voice agent gets hung up on

The first 1.5 seconds of an outbound call decide everything. Here is the playbook we use to triple connect rates.

OutboundVoice
RAG · 13 MIN READ

Pinecone vs Weaviate vs Qdrant in 2025, actually

Side by side on the metrics that matter: ingestion speed, hybrid search quality, ops overhead, and total cost at scale.

Vector DBsRAG
CRM · 6 MIN READ

HubSpot is not your CRM, it is your event bus

The mental shift that unlocks 10x more automation. Stop thinking of HubSpot as a database. Start thinking of it as a router.

HubSpotArchitecture
DATA · 10 MIN READ

The unreasonable effectiveness of dbt for AI teams

Why ML teams should adopt analytics engineering practices. Versioned data is versioned models. We have receipts.

dbtPipelines
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Field notes from the engineering team. No funding announcements. No newsletter swap promos. Just what we shipped and what we learned.