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Filter by use case, model, framework, cost basis, and how recent the writeup is. Cost is only filled in when the source states it — otherwise it's “Not stated.” Separately, a dashed “Est.” tag is a WhatWeRun estimate from public list prices, with its assumptions shown on the stack page. Writeups older than about six months are marked as an older setup, not hidden.

Cost per outputSome teams report what one finished piece of work costs (a code change, a request, an investigation) instead of token prices. We tag that only when the writeup states it, and label benchmark or eval figures. Show those stacks.

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5 stacks matching

medium.com

Data / ML platform

Nov 12, 2026

Pinterest's Analytics Agent and its tuning loop

An internal Analytics Agent that searches Pinterest's data ecosystem (tables, dashboards, metrics) to answer questions, plus an automated 'loop engineering' process that improves how reliably it follows required steps

Loop engineering (automated propose-test-learn loop)not stated+1
langchain.com

Sales

Nov 10, 2026

LangChain's GTM Agent sales artifacts

LangChain's internal GTM Agent building sales artifacts (account plans, proof-of-value docs, proposal decks, onboarding plans) from deal context, and suggesting the right one before customer calls

Deep Agentsnot stated+5
datadoghq.com

Agent platform / infrastructure

Oct 30, 2026

Datadog's Insights agent, tuned by its own traces

The agent behind Datadog Agent Observability Insights, which analyzes agent traces to find cost and reliability problems; Datadog uses Insights on that agent's own traces to cut tokens and fix failing tool calls

not statednot stated+1
netflixtechblog.com

Data / ML platform

Oct 26, 2026

Netflix Pensive AI failure diagnosis

AI error extraction and on-demand root-cause debugging for failed data and ML workloads on Netflix's data platform (Maestro, Spark, Trino, Druid, Titus), where roughly 100,000 workloads fail on peak days

Pensive (legacy rules engine)Pensive AI+5
shopify.engineering

Coding agent

Oct 22, 2026

Shopify River on Remote Dev (mobile)

Shopify's Slack agent River building, testing, and proving mobile (iOS and Android) changes on remote Macs, from bug fixes and PR feedback to overnight automated fixes

River (Shopify's AI agent in Slack)Remote Dev+7