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From the
Nirmata Lab

AI agents, automation architecture, and the future of autonomous business - written by people who build it every day.

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Guides

Why the Sora API Is Being Shut Down

OpenAI removes the Sora API on September 24, 2026. The official notice gives a date and five model names, no reason and no replacement. Here is what is actually confirmed, what is only reported, and what to do if you built on it.

10 min read
Guides

Prompt Caching: Where the Saving Goes Missing

Prompt caching cuts the cost of repeated AI input to about a tenth. The mechanism is simple to describe and unforgiving in practice: it matches on exact bytes, fails silently, and can cost more than it saves. Here is how it works and where the money actually leaks.

9 min read