OpenAI Inc.

03/03/2026 | News release | Distributed by Public on 03/03/2026 12:18

GPT-5.3 Instant System Card

March 3, 2026

PublicationSafety

GPT-5.3 Instant System Card

Share

Introduction

GPT-5.3 Instant is the newest addition to the GPT-5 series. As described in our blog , GPT-5.3 Instant responds faster, delivers richer and better-contextualized answers when searching the web, and reduces unnecessary dead ends, caveats, and overly declarative phrasing that can interrupt the flow of conversation. The comprehensive safety mitigation approach for this model is largely the same as that described for GPT-5.2 Instant in the GPT-5.2 System Card .

In this card we also refer to GPT-5.3 Instant as gpt-5.3-instant.

OpenAI Inc. published this content on March 03, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on March 03, 2026 at 18:19 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]