o4-mini-2025-04-16

reasoning

o4-mini is our latest small o-series model. It's optimized for fast,

Intelligence

Reasoning

Speed

Context

200K

Max output

100K

Input price

$1.1/1M tokens

Output price

$4.4/1M tokens

Alias ofo4-mini

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

ProviderOpenAI

CreatorOpenAI

Familyo4

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

Fine-tuningPOST

Train custom models on your datahttps://api.openai.com/v1/fine_tuning/jobs

Pricing

Fine-tuning

	Training	Input	Cached input	Output
Standard	—	$4	$1	$16
Batch	—	$2	—	$8

Family Comparison: o4

Model	Perf	Speed	Context	Max out	Input	Output
o4-miniRVTS			200K	100K	$1.1	$4.4
o4-mini-deep-researchRVS			200K	100K	$2	$8

API

GET/v1/models/openai/o4-mini-2025-04-16

o4-mini-2025-04-16

o4-mini is our latest small o-series model. It's optimized for fast,

alias → o4-mini

Changes · 3 entries

o4-mini-2025-04-16updateb50649fMar 21, 2026, 11:58 PM

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

descriptionOpenAI o4-mini is a compact reasoning model in the o-seri...→o4-mini is our latest small o-series model. It's optimize...

capabilitiesstreamingyesvisionyesfine tuningyes

knowledge_cutoff2024-05

model_typereasoning

reasoning_tokensyes

reasoning4

taglineo4-mini is our latest small o-series model.

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

o4-mini-2025-04-16updatec9a70c5Mar 21, 2026, 08:12 AM

pricinginput$1.1output$4.4cached input$0.275batch input$0.55batch output$2.2

descriptionOpenAI o4-mini is a compact reasoning model in the o-seri...

capabilitiestool callyesstructured outputyesreasoningyes

o4-mini-2025-04-16create7f5c66fMar 21, 2026, 05:16 AM