o3

Name: o3
Author: Azure AI Foundry

reasoningdeprecatedproprietary

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

Intelligence

Reasoning

Speed

Context

200K

Max output

100K

Input price

$2/1M tokens

Output price

$8/1M tokens

Capabilities

Show unsupported (2)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Batch Processing

Details

ProviderAzure AI Foundry

CreatorOpenAI

Familyo3

Licenseproprietary

Statusdeprecated

Typereasoning

Input modalitiestext, image

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Context window200K tokens

Max input—

Max output100K tokens

Reasoning tokensYes

Knowledge cutoff2024-05-31

Release date2025-04-16

Deprecation date2026-06-11

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Text tokensPer 1M tokens

	Input	Cached input	Output
Standard	$2	$0.5	$8

Family Comparison: o3

Model	Caps	Perf	Speed	Context	Max out
o3-deep-research	RSB	—	—	200K	100K
o3-mini	RTJJMSB	—	—	200K	100K
o3-pro	RTJJMSB	—	—	200K	100K
o3	RTJJMSB	—	—	200K	100K

API

GET/v1/models/azure/o3

o3

deprecated

Changes · 5 entries

o3update1cd659eMar 24, 2026, 04:19 AM

capabilitiesjson modeyes

o3update2b100acMar 23, 2026, 05:30 AM

tools["function_calling"]

description- New reasoning model, offering enhanced reasoning abilit...

tagline- New reasoning model, offering enhanced reasoning abilit...

o3updateb50649fMar 21, 2026, 11:58 PM

model_typereasoning

o3updatec9a70c5Mar 21, 2026, 08:12 AM

knowledge_cutoffMay 31, 2024→2024-05-31

o3create7f5c66fMar 21, 2026, 05:16 AM