o4-mini

reasoningdeprecatedproprietary

- New reasoning model, offering enhanced reasoning abilities . - Chat Completions API. - Responses API . - Structured outputs. - Text and image processing. - Functions and tools. Full summary of capabilities .

Intelligence
Reasoning
Speed
Context
200K
Max output
100K
Input price
$1.1/1M tokens
Output price
$4.4/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing
Fine-tuning

Details

Provider Azure AI Foundry
Creator OpenAI
Familyo4
Licenseproprietary
Statusdeprecated
Typereasoning
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window200K tokens
Max input—
Max output100K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Fine-tuning
TrainingInputCached inputOutput
Standard$100$4$1$16
Batch$100$2$0.5$8

API

GET/v1/models/azure/o4-mini

o4-mini

deprecated

- New reasoning model, offering enhanced reasoning abilities . - Chat Completions API. - Responses API . - Structured outputs. - Text and image processing. - Functions and tools. Full summary of capabilities .

Changes · 5 entries
o4-miniupdate1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
o4-miniupdate2b100acMar 23, 2026, 05:30 AM
tools["function_calling"]
description- New reasoning model, offering enhanced reasoning abilit...
tagline- New reasoning model, offering enhanced reasoning abilit...
o4-miniupdateb50649fMar 21, 2026, 11:58 PM
model_typereasoning
o4-miniupdatec9a70c5Mar 21, 2026, 08:12 AM
knowledge_cutoffMay 31, 2024→2024-05-31
o4-minicreate7f5c66fMar 21, 2026, 05:16 AM