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Field notes from production AI.

Long-form essays from the engineers shipping AI inside payers, hospitals, energy operators and proptech platforms. Written for technology leaders who care more about what runs in production than what trended last week.

All essays

Field notes, sorted by recency.

93 essays
APPLIED AI Distillation forCost Reduction UnderAudit. Distillation for cost reduction UnderAudit helps AI leaders connect workload… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights ·

Distillation for Cost Reduction Under Audit

Distillation for cost reduction Under Audit helps AI leaders connect workload, teacher, risk-weighted, routing, and distillation to lower-cost inference. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI Agent SpendControls UnderAudit. Agent spend controls Under Audit helpsAI leaders connect cost attribution… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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Agent Spend Controls Under Audit

Agent spend controls Under Audit helps AI leaders connect cost attribution, runtime, loop detection, routing control, and spend to traceable spend control. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
APPLIED AI Speech Interfaces inProduction UnderAudit. Speech interfaces in production UnderAudit helps engineering leaders connect… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
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Speech Interfaces in Production Under Audit

Speech interfaces in production Under Audit helps engineering leaders connect audio, turns, transcripts, tools, and replay to defensible voice interactions. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI What AI AgentOrchestrationActually Costs. What AI agent orchestration ActuallyCosts shows the engineering, control… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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What AI Agent Orchestration Actually Costs

What AI agent orchestration Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price over the operating life. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI What Fine-TuningVersus PromptingActually Costs. What Fine-tuning versus promptingActually Costs shows the engineering… WHATFINE-TUNING/… What Fine-Tuning Best fit for your caseSimpler to operateLower switching cost Prompting Actually Added complexityHeavier toolingSteeper learning curve
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What Fine-Tuning Versus Prompting Actually Costs

What Fine-tuning versus prompting Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price at enterprise scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI What SpeechInterfaces inProduction ActuallyCosts. What Speech interfaces in productionActually Costs shows the engineering… 100% EFFORT MIX Build 32% Integrate 26% Secure 24% Operate 18%
Insights ·

What Speech Interfaces in Production Actually Costs

What Speech interfaces in production Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI What Context WindowManagement ActuallyCosts. What Context window management ActuallyCosts shows the engineering, control… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
Insights ·

What Context Window Management Actually Costs

What Context window management Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price across production AI. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI Chunking StrategyUnder Audit. Chunking strategy Under Audit helps AIleaders connect content segmentation… CHUNKINGSTRATEGY DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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Chunking Strategy Under Audit

Chunking strategy Under Audit helps AI leaders connect content segmentation, boundary, overlap, content-type, and chunking to auditable retrieval quality. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
APPLIED AI A Buyer'S Guide toHuman-In-The-LoopApproval Gates. A Buyer's Guide to Human-in-the-loopapproval gates helps engineering leaders… DESIGN SHIP OBSERVE REFINE BUYER
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A Buyer'S Guide to Human-In-The-Loop Approval Gates

A Buyer's Guide to Human-in-the-loop approval gates helps engineering leaders connect rejection rate, reviewer basis, gate placement, throughput, and decay to gates that catch things rather than rubber-stamp them. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

11 min read↗
APPLIED AI A Buyer'S Guide toAI FeatureDiscoverability. A Buyer's Guide to AI featurediscoverability helps product and… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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A Buyer'S Guide to AI Feature Discoverability

A Buyer's Guide to AI feature discoverability helps product and engineering leaders connect capability affordances, entry points, expectation setting, failure visibility, and progressive disclosure to features users can find and learn. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

11 min read↗
APPLIED AI What SemanticCaching ActuallyCosts. What Semantic caching Actually Costshelps leaders see the engineering… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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What Semantic Caching Actually Costs

What Semantic caching Actually Costs helps leaders see the engineering, control, change, and risk costs behind the first implementation at enterprise scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
APPLIED AI WhatRetrieval-AugmentedGeneration ActuallyCosts. What Retrieval-augmented generationActually Costs explains the engineering… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

What Retrieval-Augmented Generation Actually Costs

What Retrieval-augmented generation Actually Costs explains the engineering, control, change, and risk costs behind the first implementation in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI A Buyer'S Guide toAgent RefusalBehaviour. A Buyer's Guide to Agent refusalbehaviour helps engineering leaders… BUYERAGENT DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
Insights ·

A Buyer'S Guide to Agent Refusal Behaviour

A Buyer's Guide to Agent refusal behaviour helps engineering leaders connect over-refusal cost, refusal quality, measurement in both directions, alternative offering, and domain tuning to refusals that do not block legitimate work. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

11 min read↗
APPLIED AI Reranking ModelsUnder Audit. Reranking models Under Audit helps AIleaders connect candidate set, reranker… DISCOVERY DESIGN DELIVERY SCALE
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Reranking Models Under Audit

Reranking models Under Audit helps AI leaders connect candidate set, reranker model, cutoff policy, evaluation, and ranking to defensible evidence ranking. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
APPLIED AI Long-RunningAgent WorkflowsUnder Audit. Long-running agent workflows Under Audithelps AI leaders connect durable… MODEL DEPLOY MONITOR ITERATE LONG
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Long-Running Agent Workflows Under Audit

Long-running agent workflows Under Audit helps AI leaders connect durable, version, event, resume control, and workflow to controlled long-duration execution. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
APPLIED AI Conversation StateManagement UnderAudit. Conversation state management UnderAudit helps AI leaders connect state… MODEL DEPLOY MONITOR ITERATE CONVERSAT…
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Conversation State Management Under Audit

Conversation state management Under Audit helps AI leaders connect state, scope, update, expiry and deletion, and state to reliable conversational state. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

16 min read↗
APPLIED AI FinOps for AIWorkloads UnderAudit. FinOps for AI workloads Under Audithelps platform leaders connect usage… 01 Ad hoc 02 Managed 03 Defined 04 Optimized FINOPS AI
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FinOps for AI Workloads Under Audit

FinOps for AI workloads Under Audit helps platform leaders connect usage, units, budgets, routing, and evidence to defensible AI economics in production. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI Small LanguageModels in ProductionUnder Audit. Small language models in productionUnder Audit helps AI leaders connect… STRATEGY DELIVERY GOVERNANCE SCALE SMALLLANGUAGE
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Small Language Models in Production Under Audit

Small language models in production Under Audit helps AI leaders connect tasks, routing, fallback, serving, and evidence to defensible model assignment. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI What Hybrid Searchfor RetrievalActually Costs. What Hybrid search for retrievalActually Costs shows the engineering… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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What Hybrid Search for Retrieval Actually Costs

What Hybrid search for retrieval Actually Costs shows the engineering, control, change, and risk costs hidden beyond the headline price at enterprise scale. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI A Buyer'S Guide toSmall LanguageModels in Production. A Buyer's Guide to Small language modelsin production helps CTO leaders connect… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 BUYER SMALL
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A Buyer'S Guide to Small Language Models in Production

A Buyer's Guide to Small language models in production helps CTO leaders connect task fit, routing, latency, hosting, and evaluation to production economics. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

15 min read↗
APPLIED AI A Buyer'S Guide toModel Routing andFallback. A Buyer's Guide to Model routing andfallback helps engineering leaders… 01 Pilot 02 Team 03 Org 04 Scale BUYER MODEL
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A Buyer'S Guide to Model Routing and Fallback

A Buyer's Guide to Model routing and fallback helps engineering leaders connect behavioural difference on failover, prompt portability, quality tiers, silent degradation, and failing closed to fallback that does not quietly change your answers. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

11 min read↗
APPLIED AI A Buyer'S Guideto Agent ToolCalling. A Buyer's Guide to Agent tool callinghelps engineering leaders connect… 01 Discover 02 Prototype 03 Harden 04 Roll out
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A Buyer'S Guide to Agent Tool Calling

A Buyer's Guide to Agent tool calling helps engineering leaders connect parameter correctness, tool selection errors, schema design, validation, and failure feedback to reliability measured on outcomes rather than call rates. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

11 min read↗
APPLIED AI Inference CostAttribution UnderAudit. Inference cost attribution Under Audithelps platform leaders connect requests… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
Insights ·

Inference Cost Attribution Under Audit

Inference cost attribution Under Audit helps platform leaders connect requests, models, tenants, fallback, and billing to defensible inference allocation. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
APPLIED AI Prompt VersioningUnder Audit. Prompt versioning Under Audit helps AIleaders connect prompt, composition… 01 Discover 02 Prototype 03 Harden 04 Roll out
Insights ·

Prompt Versioning Under Audit

Prompt versioning Under Audit helps AI leaders connect prompt, composition layer, release, evaluation gate, and prompt to reconstructable prompt behaviour. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

17 min read↗
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