GPT-4o

Name: GPT-4o
Author: OpenAI

proprietary

GPT-4o (“o” for “omni”) is our versatile, high-intelligence flagship model.

Intelligence

Speed

Context

128K

Max output

16K

Input price

$2.5/1M tokens

Output price

$10/1M tokens

Snapshotsgpt-4o-2024-11-20 gpt-4o-2024-08-06 gpt-4o-2024-05-13

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

ProviderOpenAI

Creatoropenai

Familygpt-4o

Licenseproprietary

Parameters—

Statusactive

Input modalitiestext, image

Output modalitiestext

Architecture—

Knowledge cutoff2023-10

Training data cutoff—

Release date2024-11-20

Deprecation date—

Typechat

Reasoning tokens—

Max input—

Open weightNo

Sourceofficial

Last updated2026-03-26

Tools

Function Callingfunction_calling

Call external functions and APIs

Endpoints

Chat CompletionsPOST

Generate chat responses with messageshttps://api.openai.com/v1/chat/completions

ResponsesPOST

Stateful multi-turn conversationshttps://api.openai.com/v1/responses

AssistantsPOST

Persistent assistants with tools and fileshttps://api.openai.com/v1/assistants

BatchPOST

Async batch processing at lower costhttps://api.openai.com/v1/batches

Pricing

Fine-tuning

	Training	Input	Cached input	Output
Standard	$25	$3.75	$1.875	$15
Batch	—	$1.875	—	$7.5

Family Comparison: gpt-4o

Model	Caps	Context	Max out	Pricing
GPT-4o mini Audio	TS	128K	16K	$0.15$0.6
GPT-4o mini Search Preview	VS	128K	16K	$0.15$0.6
GPT-4o mini	VTS	128K	16K	$0.15$0.6
GPT-4o mini Realtime	T	16K	4K	$0.6$2.4
GPT-4o mini TTS		—	—	$0.6—
GPT-4o mini Transcribe		16K	2K	$1.25$5
GPT-4o Audio	TS	128K	16K	$2.5$10
GPT-4o Search Preview	VS	128K	16K	$2.5$10
GPT-4o Transcribe Diarize		16K	2K	$2.5$10
GPT-4o Transcribe		16K	2K	$2.5$10
GPT-4o	VTS	128K	16K	$2.5$10
GPT-4o Realtime	T	32K	4K	$5$20

API

GET/v1/models/openai/gpt-4o

GPT-4o

GPT-4o (“o” for “omni”) is our versatile, high-intelligence flagship model.

gpt-4o-2024-11-20 gpt-4o-2024-08-06 gpt-4o-2024-05-13

Changes · 8 entries

gpt-4oupdatee8ec634Mar 24, 2026, 07:27 PM

knowledge_cutoff2023-09→2023-10

gpt-4oupdatefa2bbbbMar 24, 2026, 05:22 AM

capabilitiesjson modeno→yes

gpt-4oupdatef43e286Mar 24, 2026, 04:45 AM

capabilitiesfine tuningyes→nojson modeyes→noreasoningnobatchyes

gpt-4oupdate1cd659eMar 24, 2026, 04:19 AM

knowledge_cutoff2023-10→2023-09

capabilitiesjson modeyes

page_urlhttps://platform.openai.com/docs/models/gpt-4o→https://developers.openai.com/api/docs/models/gpt-4o?snap...

gpt-4oupdateb301ebeMar 23, 2026, 11:47 PM

knowledge_cutoff2023-09→2023-10

gpt-4oupdate2b100acMar 23, 2026, 05:30 AM

tools["function_calling","web_search","file_search","image_gen...→["function_calling"]

licenseproprietary

page_urlhttps://platform.openai.com/docs/models/gpt-4o

open_weightno

release_date2024-11-20

gpt-4oupdateb50649fMar 21, 2026, 11:58 PM

namegpt-4o→GPT-4o

pricingtiers[{"label":"Fine-tuning","unit":"","columns":["Training","...

capabilitiesstreamingyesvisionyesfine tuningyes

snapshots["gpt-4o-2024-05-13","gpt-4o-2024-08-06","gpt-4o-2024-11-...→["gpt-4o-2024-11-20","gpt-4o-2024-08-06","gpt-4o-2024-05-...

knowledge_cutoff2023-09

taglineFast, intelligent, flexible GPT model

tools["function_calling","web_search","file_search","image_gen...

endpoints["chat_completions","responses","assistants","batch"]

gpt-4ocreate7f5c66fMar 21, 2026, 05:16 AM