OpenAI: o3

reasoningdeprecatedproprietary

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

Intelligence
Reasoning
Speed
Context
200K
Max output
100K
Input price
$2/1M tokens
Output price
$8/1M tokens

Capabilities

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

Details

Model IDopenai/o3
Provider OpenRouter
Creator OpenAI
Familyo3
Licenseproprietary
Statusdeprecated
Typereasoning
Input modalitiesimage, text
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

Input
$2
Output
$8
Cache write
—
Cache read
$0.5
Batch in
—
Batch out
—

Family Comparison: o3

ModelContextMax outPricing
OpenAI: o3 Mini (batch)200K100K$0.55$2.2
OpenAI: o3 Mini High (batch)200K100K$0.55$2.2
OpenAI: o3 Mini High200K100K$1.1$4.4
OpenAI: o3 Mini200K100K$1.1$4.4
OpenAI: o3200K100K$2$8
OpenAI: o3 Deep Research200K100K$10$40
OpenAI: o3 Pro (batch)200K100K$10$40
OpenAI: o3 Pro200K100K$20$80

API

GET/v1/models/openrouter/openai/o3

OpenAI: o3

deprecated
openai/o3

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

Changes · 3 entries
openai/o3update1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
openai/o3update2b100acMar 23, 2026, 05:30 AM
model_typereasoning
release_date2025-04-16
taglineo3 is a well-rounded and powerful model across domains.
tools["function_calling"]
openai/o3create7f5c66fMar 21, 2026, 05:16 AM