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Internal engineering platform

Aug 3, 2026

Duolingo's production agent platform

An internal platform so any Duolingo team can define a production agent once and invoke it from Slack, internal sites, a CLI, or another Temporal workflow. In use for fixing CI failures, addressing code-review comments, and a Slack bot for release managers that investigates crashes and summarizes findings

TemporalOpenAI Agents SDKClaude Agents SDKgpt-5.5 (shown in an example agent definition)Models reached through an internal LLM Gateway

Coding agent

Apr 7, 2026

LangGraph plus CLI coding agents in git worktrees (HN)

A production multi-agent coding setup in which specialized CLI agents run in parallel, each in its own git worktree, under a central coordinator

LangGraphCustom orchestratorClaude CodeCodex CLI