Overview
A GPT-5.3 update for everyday conversation, focused on fewer unnecessary refusals, better search accuracy, and smoother writing.
GPT-5.3 Instant
A GPT-5.3 update for everyday conversation, focused on fewer unnecessary refusals, better search accuracy, and smoother writing.
MODEL NUMBER039
- Release date
- 2026-03-03
- Organization
- OpenAI
- Family
- GPT
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Specifications
Only published specifications are shown.
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Overview
PreviousGPT-5.2— · — ctx
CurrentGPT-5.3 Instant— · — ctx
New capabilities Conversation Web search Writing
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Architecture & capabilities
Key capabilities
ConversationWeb searchWriting
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Release history
GPT-5.3 Instant became ChatGPT’s everyday fast model and entered the API.
View source06
Related models
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