o3-2025-04-16

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

Alias ofo3

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

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/o3-2025-04-16