o3-mini

reasoning

o3-mini is our newest small reasoning model, providing high intelligence at the same cost and latency targets of o1-mini. o3-mini supports key developer features, like Structured Outputs, function calling, and Batch API.

Intelligence
Reasoning
Speed
Context
200K
Max output
100K
Input price
$1.1/1M tokens
Output price
$4.4/1M tokens
Capabilities
vision
tool call
structured output
reasoning
json mode
streaming
fine tuning
batch
Details
Provider OpenAI
Creator OpenAI
Familyo3
Statusactive
Input modalitiestext
Output modalitiestext
Knowledge cutoff2023-09
Release date
Deprecation date
Typereasoning
Reasoning tokensYes
Max input
Sourceofficial
Last updated2026-03-21
Tools
Function Callingfunction_calling
Call external functions and APIs
File Searchfile_search
Search across uploaded files
Code Interpretercode_interpreter
Execute code in a sandbox
MCPmcp
Connect to Model Context Protocol servers
Image Generationimage_generation
Generate images inline
Endpoints
Chat CompletionsPOST
Generate chat responses with messageshttps://api.openai.com/v1/chat/completions
ResponsesPOST
Stateful multi-turn conversationshttps://api.openai.com/v1/responses
AssistantsPOST
Persistent assistants with tools and fileshttps://api.openai.com/v1/assistants
BatchPOST
Async batch processing at lower costhttps://api.openai.com/v1/batches
Pricing
Text tokensPer 1M tokens
InputCached inputOutput
Standard$1.1$0.55$4.4
Batch$0.55$2.2
Family Comparison: o3
ModelContextMax outInputOutput
o3-miniRVTS
200K100K$1.1$4.4
o3RVTS
200K100K$2$8
200K100K$10$40
200K100K$20$80
API
GET/v1/models/openai/o3-mini

o3-mini

o3-mini is our newest small reasoning model, providing high intelligence at the same cost and latency targets of o1-mini. o3-mini supports key developer features, like Structured Outputs, function calling, and Batch API.

Changes · 2 entries
o3-miniupdateb50649fMar 21, 2026, 11:58 PM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
descriptionOpenAI o3-mini is a cost-efficient language model optimiz...o3-mini is our newest small reasoning model, providing hi...
capabilitiesstreamingyesvisionyes
knowledge_cutoff2023-09
model_typereasoning
reasoning_tokensyes
reasoning4
taglineA small model alternative to o3
tools["function_calling","file_search","code_interpreter","mcp...
endpoints["chat_completions","responses","assistants","batch"]
o3-minicreate7f5c66fMar 21, 2026, 05:16 AM