OpenAI and Anthropic's httpx2 OS-certificate move, once mocked, now looks prescient

samuelcolvin · x · 2026-10-21

Pydantic creator Samuel Colvin recalls that OpenAI and Anthropic were criticized on Hacker News for switching their SDKs to httpx2, which relies on OS certificates instead of bundling them. In hindsight, marcelotryle's change in httpx2 and the labs' adoption of it look like a very prescient engineering decision.

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