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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.

30 essays
QUALITY ENGINEERING A Buyer's Guide toRegression testingfor prompts. A Buyer's Guide to Regression testingfor prompts helps CTO / Head of AI… 100% EFFORT MIX Strategy 32% Engineering 26% Governance 24% Enablement 18%
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A Buyer's Guide to Regression testing for prompts

A Buyer's Guide to Regression testing for prompts helps CTO / Head of AI leaders connect test cases, behavioural rubric, model matrix, change attribution, and release gating to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toContract testing formodel APIs. A Buyer's Guide to Contract testing formodel APIs helps VP Engineering / Head… 01 Pilot 02 Team 03 Org 04 Scale BUYER CONTRACT
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A Buyer's Guide to Contract testing for model APIs

A Buyer's Guide to Contract testing for model APIs helps VP Engineering / Head of Infrastructure leaders connect request schema, response envelope, version metadata, error semantics, and behavioural compatibility to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toChaos testing AIdependencies. A Buyer's Guide to Chaos testing AIdependencies helps VP Engineering / Head… BUYERCHAOS DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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A Buyer's Guide to Chaos testing AI dependencies

A Buyer's Guide to Chaos testing AI dependencies helps VP Engineering / Head of Infrastructure leaders connect dependency map, failure hypotheses, degradation injection, safety boundaries, and recovery evidence to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toLoad testing agenticsystems. A Buyer's Guide to Load testing agenticsystems helps VP Engineering / Head of… DISCOVERY DESIGN DELIVERY SCALE
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A Buyer's Guide to Load testing agentic systems

A Buyer's Guide to Load testing agentic systems helps VP Engineering / Head of Infrastructure leaders connect task model, agent step distribution, tool dependencies, concurrency and queues, and cost and failure metrics to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Bias and fairnesstesting UnderAudit. Bias and fairness testing Under Audithelps AI leaders connect evidence… 100% EFFORT MIX Planning 32% Delivery 26% Testing 24% Support 18%
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Bias and fairness testing Under Audit

Bias and fairness testing Under Audit helps AI leaders connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Chaos testing AIdependencies UnderAudit. Chaos testing AI dependencies UnderAudit helps teams connect evidence… 01 Assess 02 Design 03 Ship 04 Operate
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Chaos testing AI dependencies Under Audit

Chaos testing AI dependencies Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Contract testing formodel APIs UnderAudit. Contract testing for model APIs UnderAudit helps teams connect evidence… CONTRACTTESTING DO Define ownership earlyMeasure before scalingBuild for observability AVOID Unclear accountabilityPremature optimizationBlack-box systems
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Contract testing for model APIs Under Audit

Contract testing for model APIs Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guideto Goldendatasets. A Buyer's Guide to Golden datasets helpsCTO / Head of AI leaders connect… DISCOVERY DESIGN DELIVERY SCALE
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A Buyer's Guide to Golden datasets

A Buyer's Guide to Golden datasets helps CTO / Head of AI leaders connect use-case coverage, failure classes, label quality, versioning, and refresh policy to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Regression testingfor prompts UnderAudit. Regression testing for prompts UnderAudit helps teams connect evidence… ARCHITECTURE SECURITY RELIABILITY COST REGRESSIONTESTING
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Regression testing for prompts Under Audit

Regression testing for prompts Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Groundednessscoring UnderAudit. Groundedness scoring Under Audit helpsAI leaders connect evidence, controls… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 GROUNDEDNESS SCORING
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Groundedness scoring Under Audit

Groundedness scoring Under Audit helps AI leaders connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toTest automation forAI-written code. A Buyer's Guide to Test automation forAI-written code helps VP Engineering /… PEOPLE PROCESS PLATFORM PRACTICE BUYER TEST
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A Buyer's Guide to Test automation for AI-written code

A Buyer's Guide to Test automation for AI-written code helps VP Engineering / Head of Infrastructure leaders connect change classification, static and unit checks, integration boundaries, security tests, and review and provenance to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Acceptance criteriafor probabilisticoutput Under Audit. Acceptance criteria for probabilisticoutput Under Audit helps AI leaders… STRATEGY DELIVERY GOVERNANCE SCALE ACCEPTANCECRITERIA
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Acceptance criteria for probabilistic output Under Audit

Acceptance criteria for probabilistic output Under Audit helps AI leaders connect controls, evidence, ownership, failure handling, and production decisions to risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toHallucinationdetection. A Buyer's Guide to Hallucinationdetection helps CTO / Head of AI leaders… DISCOVERY DESIGN DELIVERY SCALE
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A Buyer's Guide to Hallucination detection

A Buyer's Guide to Hallucination detection helps CTO / Head of AI leaders connect claim segmentation, evidence availability, support checking, risk weighting, and response policy to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toSynthetic test datageneration. A Buyer's Guide to Synthetic test datageneration helps CTO / Head of AI… STRATEGY DELIVERY GOVERNANCE SCALE BUYERSYNTHETIC
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A Buyer's Guide to Synthetic test data generation

A Buyer's Guide to Synthetic test data generation helps CTO / Head of AI leaders connect use-case constraints, generation method, privacy controls, distribution checks, and validation and refresh to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toLLM-as-judgeevaluation. A Buyer's Guide to LLM-as-judgeevaluation helps CTO / Head of AI… BUYER LLM DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
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A Buyer's Guide to LLM-as-judge evaluation

A Buyer's Guide to LLM-as-judge evaluation helps CTO / Head of AI leaders connect rubric design, reference examples, judge model, calibration set, and agreement monitoring to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Red-teaming AIproducts UnderAudit. Red-teaming AI products Under Audithelps security leaders connect evidence… 01 Level 1 02 Level 2 03 Level 3 04 Level 4 RED TEAMING
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Red-teaming AI products Under Audit

Red-teaming AI products Under Audit helps security leaders connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Canary releases formodel updates UnderAudit. Canary releases for model updates UnderAudit helps teams connect evidence… CANARYRELEASES DO Start from metricsShip incrementallyAutomate the guardrails AVOID Big-bang rolloutsSkipping discoveryManual, ad-hoc checks
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Canary releases for model updates Under Audit

Canary releases for model updates Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toBias and fairnesstesting. A Buyer's Guide to Bias and fairnesstesting helps CTO / Head of AI leaders… FOUNDATIONS IMPLEMENTATION OPTIMIZATION IMPACT
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A Buyer's Guide to Bias and fairness testing

A Buyer's Guide to Bias and fairness testing helps CTO / Head of AI leaders connect decision context, group definition, outcome metrics, data coverage, and mitigation and monitoring to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING LLM-as-judgeevaluation UnderAudit. LLM-as-judge evaluation Under Audithelps AI leaders connect evidence… STRATEGY DELIVERY GOVERNANCE SCALE LLM JUDGE
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LLM-as-judge evaluation Under Audit

LLM-as-judge evaluation Under Audit helps AI leaders connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Shadow deploymentfor models UnderAudit. Shadow deployment for models Under Audithelps teams connect evidence, controls… 01 Scope 02 Build 03 Launch 04 Iterate
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Shadow deployment for models Under Audit

Shadow deployment for models Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING A Buyer's Guide toCanary releases formodel updates. A Buyer's Guide to Canary releases formodel updates helps CTO / Head of AI… 01 Ad hoc 02 Managed 03 Defined 04 Optimized BUYER CANARY
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A Buyer's Guide to Canary releases for model updates

A Buyer's Guide to Canary releases for model updates helps CTO / Head of AI leaders connect traffic cohort, behavioural metrics, baseline comparison, promotion policy, and rollback to reliable production outcomes. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Golden datasetsUnder Audit. Golden datasets Under Audit helps AIleaders connect evidence, controls… PEOPLE PROCESS PLATFORM PRACTICE GOLDENDATASETS
Insights ·

Golden datasets Under Audit

Golden datasets Under Audit helps AI leaders connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Load testingagentic systemsUnder Audit. Load testing agentic systems Under Audithelps teams connect evidence, controls… DESIGN SHIP OBSERVE REFINE LOAD
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Load testing agentic systems Under Audit

Load testing agentic systems Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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QUALITY ENGINEERING Test automation forAI-written codeUnder Audit. Test automation for AI-written codeUnder Audit helps teams connect… ASSESS ADOPT OPTIMIZE GOVERN
Insights ·

Test automation for AI-written code Under Audit

Test automation for AI-written code Under Audit helps teams connect evidence, controls, ownership, failure handling, and production decisions to measurable risk. Learn the 2026 operating model, components, pitfalls, signals, and implementation steps.

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