o3

reasoning

o3 is a well-rounded and powerful model across domains. It sets a new

Intelligence

Reasoning

Speed

Context

200K

Max output

100K

Input price

$2/1M tokens

Output price

$8/1M tokens

Snapshotso3-2025-04-16

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

ProviderOpenAI

CreatorOpenAI

Familyo3

Statusactive

Input modalitiestext, image

Output modalitiestext

Knowledge cutoff2024-05

Release date—

Deprecation date—

Typereasoning

Reasoning tokensYes

Max input—

Sourceofficial

Last updated2026-03-21

Tools

Function Callingfunction_calling

Call external functions and APIs

File Searchfile_search

Search across uploaded files

Image Generationimage_generation

Generate images inline

Code Interpretercode_interpreter

Execute code in a sandbox

MCPmcp

Connect to Model Context Protocol servers

Web Searchweb_search

Search the web for information

Endpoints

Chat CompletionsPOST

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

ResponsesPOST

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

BatchPOST

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

Pricing

Text tokensPer 1M tokens

	Input	Cached input	Output
Standard	$2	$0.5	$8
Batch	$1	—	$4
Flex	$1	$0.25	$4

Family Comparison: o3

Model	Context	Max out	Input	Output
o3-miniRVTS	200K	100K	$1.1	$4.4
o3RVTS	200K	100K	$2	$8
o3-deep-researchRVS	200K	100K	$10	$40
o3-proRVT	200K	100K	$20	$80

API

GET/v1/models/openai/o3

o3

o3 is a well-rounded and powerful model across domains. It sets a new

o3-2025-04-16

Changes · 2 entries

o3updateb50649fMar 21, 2026, 11:58 PM

pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...

descriptiono3 is a well-rounded and powerful model across domains.→o3 is a well-rounded and powerful model across domains. I...

capabilitiesstreamingyesvisionyes

knowledge_cutoff2024-05

model_typereasoning

reasoning_tokensyes

reasoning5

taglineReasoning model for complex tasks, succeeded by GPT-5

tools["function_calling","file_search","image_generation","cod...

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

o3create7f5c66fMar 21, 2026, 05:16 AM