Checked fact 238623 Oct 2026Agents and apps

In a quote on OpenAI's page, Ajeet Grewal of Sierra says Sierra runs the Decisions API at under 280 ms p95, about 3x faster and 90% lower cost per call than its previous approach.

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The exact words it rests on

It runs at under 280 ms p95, about 3× faster and 90% lower cost per call than our previous approach, with no drop in customer outcomes.”—Ajeet Grewal, Engineer, Sierra

What the source said when we opened it, on 23 Oct 2026.

The source

Build more responsive apps with the Decisions API
OpenAI · 2026-10-22

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Checked

Checked by the notis newsroom on 23 Oct 2026, against the source above.

In the story

OpenAI made its Decisions API generally available, with US and EU inference residency. 23 Oct 2026

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The company says: “In a quote on OpenAI's page, Ajeet Grewal of Sierra says Sierra runs the Decisions API at under 280 ms p95, about 3x faster and 90% lower cost per call than its previous approach.” ai notis, checked 23 Oct 2026. Source: Build more responsive apps with the Decisions API (OpenAI). https://ainotis.com/c/2386

As a reference (APA style)

ai notis. (2026, October 23). The company says: In a quote on OpenAI's page, Ajeet Grewal of Sierra says Sierra runs the Decisions API at under 280 ms p95, about 3x faster and 90% lower cost per call than its previous approach [Checked claim 2386]. ai notis. https://ainotis.com/c/2386

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