Cause & Effect

Inside OpenRouter’s Tech Stack and Use of Effect #6

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Louis Vichy, co-founder of OpenRouter, joins Johannes Schickling and Michael Arnaldi to talk about OpenRouter’s TypeScript stack, internal tooling powered by Effect, and the engineering challenges of scaling an AI platform processing trillions of tokens weekly.

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  • (00:00) - Guest Intro & OpenRouter
  • (07:45) - Why Everything Runs in TypeScript
  • (15:43) - Scaling & Routing in OpenRouter’s Infrastructure
  • (18:03) - Michael’s Story: Why Effect Was Born
  • (23:11) - Effect vs. Result Types and Error Handling
  • (26:04) - Culture, Hiring & Engineering Consistency
  • (30:48) - The Case for Gradual Effect Adoption
  • (32:30) - Generators, Pipe, and Functional Design
  • (47:41) - Observability & Concurrency
  • (58:35) - Agentic Systems, Orchestration & Observability
  • (01:16:41) - Using Effect in OpenRouter’s Internal Tooling
    • ...more
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    Cause & EffectBy Effectful Technologies Inc.