Model · OpenAI · Text

GPT-4o

OpenAI's flagship multimodal model — text, vision, and realtime voice in one model. The default "omni" frontier model.

Modality: Text
License: Proprietary (Proprietary)
Context window: 128,000 tokens
Released: May 13, 2024
Last verified: May 10, 2026
Runs locally: No
Also handles: vision, realtime-voice

Strengths

Native multimodal (text + image + audio)
Realtime voice surface (200ms response)
Strong instruction following across modalities

Weaknesses

Closed weights — cannot be self-hosted
Realtime API has a separate access tier

Try it

Where	Type	Notes
OpenAI API	hosted-api	API key required
Azure OpenAI	hosted-api	Enterprise / regional
ChatGPT	product	Free tier

Used in solutions

AI hallucinations explained

How-to Local-OK

Extract structured data from PDFs at scale

How-to Local-OK

Find patterns in customer feedback

Generate alt text and image descriptions at scale

GPT vs Claude vs Gemini for business writing

Explainer Local-OK

When to run AI locally vs in the cloud

First-draft marketing copy without the AI tells

Tokens, context windows, and what they cost

What an LLM actually does for a business

Version history

GPT-4o mini Jul 2024
GPT-4o May 2024 Current
GPT-4 Turbo Apr 2024 Deprecated

Official sources

Model card model
API docs docs

Change log

May 10, 2026 — Initial entry.