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Production SI, engineered end to end, six eval-gated service lines.

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The same playbook, tuned to the constraints of the sectors we ship into most.

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Proof, not promises, selected case studies and recognition.

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A transparent, 3-phase playbook from first audit to embedded team.

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The senior team behind the work, and how to reach us.

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The journal

Notes from the build floor.

Engineering write-ups, design essays, and post-mortems from our team. We publish what we wish we had read.

Read the journal

Engineering write-ups

Engineering write-ups.

  1. SI EngineeringRAG in production: six anti-patterns we keep finding
  2. SI EngineeringEval-first SI: how we ship copilots that survive Tuesday
  3. MLOpsVector DB selection in 2026, a pragmatic guide
  4. AgentsDesigning autonomous agents that don’t go rogue

Design essays

Design essays.

  1. DesignDesigning for SI surfaces: prompts as product

Strategy

We publish what we wish we had read.

  1. StrategyWhen SI is the wrong answer: a build-vs-buy framework

Featured

Every article, newest first.

YESNOYESNOYESNOBUILD SI?DATA READY?RULES OK?BUILDCOLLECTUSE RULESBUILDBUILD VS BUY · DECISION TREE

Strategy· 9 min· June 13, 2026

When SI is the wrong answer: a build-vs-buy framework

A decision tree we run with every prospective client before quoting any SI build. It saves them money and us reputation.

Read article

!RAG · RETRIEVAL AUDIT

SI Engineering· 10 min

RAG in production: six anti-patterns we keep finding

A field report from a dozen RAG deployments. The failure modes are remarkably consistent, and most of them are fixable in an afternoon.

EVAL HARNESS · v3.2ACCURACY88%✓HALLUCINATION72%✗LATENCY P9595%✓COVERAGE61%✗

SI Engineering· 12 min

Eval-first SI: how we ship copilots that survive Tuesday

A walkthrough of the eval harness we attach to every SI project before model selection, prompt design, or anything else interesting.

DIM 1DIM 2EMBEDDING SPACE · 3 CLUSTERS

MLOps· 8 min

Vector DB selection in 2026, a pragmatic guide

pgvector vs Pinecone vs Weaviate vs Turbopuffer, what we use, when, and what the gotchas look like at million-scale.

PLANSEARCHCODEMEMORYHUMANAGENTCORE

Agents· 14 min

Designing autonomous agents that don’t go rogue

Guardrails, tool-use schemas, and the eval suite we run before any agent gets production credentials.

summarise the contractSure. 3 key clauses...what are the risks?Ask anything...

Design· 6 min

Designing for SI surfaces: prompts as product

The user interface for an SI product is half text, half waiting. Lessons from a year of shipping conversational and copilot UI.

Available for new engagements

Have an SI system that needs to ship?

30 minutes, one of our seniors, no slide deck. By the end of the call you will know whether we are the right team, and if not, who is.

Get a production-readiness reviewEmail info@octalcode.com

Or call +1 (512) 710-5701

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