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GPT-5.5

A new class of intelligence for professional work

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GPT-5.4

Intelligence at scale for agents & professional work

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GPT-5.4-mini

Faster, cost-efficient version of GPT-5.4

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Audio

Speech-to-text or text-to-speech

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Image

Create or edit images

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Tools

Function calling

Connect models to custom functions

Web search

Search the web in real-time

File search

Search throughout uploaded files

MCP

Model Context Protocol

Skills

Upload, manage, and attach skills

Updates

7 days agoIntroducing GPT-Realtime-2, GPT-Realtime-Translate, and GPT-Realtime-WhisperTry the latest voice models in the API: GPT-Realtime-2 brings GPT-5 class reasoning to voice models while GPT-Realtime-Translate enables audio and text transcriptions in 70 input languages and 13 output languages in real time. Use GPT-Realtime-Whisper for live transcription.
20 days agoGPT-5.5 brings a new class of intelligence for real workGPT-5.5 brings higher intelligence and stronger token efficiency to complex work, helping tasks get done faster and with fewer retries.
23 days agoGPT Image 2 in the API and CodexOur most capable image model with thousands of aspect ratios and up to 2K outputs.
29 days agoSandbox Agents in the Agents SDKNative sandbox execution on an open-source harness that manages agent loops, tools, and context.
3 months agoGPT-5.4 and GPT-5.4-miniA more affordable model for professional workflows.
3 months agoWebSocket Mode for Faster Agent LoopsWebSocket mode speeds up tool-heavy Responses API workflows by 40%.