o4-mini

reasoningdeprecatedproprietary

Status: Shut down · Succeeded by gpt-5.6-terra

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

Capabilities

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

Details

Provider OpenAI
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
Retirement date
Successorgpt-5.6-terra
Sourceofficial

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
Web Searchweb_search
Search the web for information

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

Family Comparison: o4

ModelContextMax outPricing
o4-mini200K100K$1.1$4.4
o4-mini-deep-research200K100K$2$8

API

GET/v1/models/openai/o4-mini

o4-mini

deprecated

Status: Shut down

o4-mini-2025-04-16
Changes · 13 entries
o4-miniupdateca7a400Nov 2, 2026, 03:02 AM
descriptiono4-mini is our latest small o-series model. It's optimize...→Status: Shut down
statusactive→deprecated
taglineFast, cost-efficient reasoning model, succeeded by GPT-5 ...→Fast, cost-efficient reasoning model, succeeded by GPT-5 ...
pricingtiers[{"label":"Fine-tuning","unit":"","columns":["Training","...→[{"label":"Fine-tuning","unit":"","columns":["Training","...
tools["function_calling"]→["function_calling","file_search","code_interpreter","mcp...
page_urlhttps://developers.openai.com/api/docs/models/o4-mini?sna...→https://developers.openai.com/api/docs/models/o4-mini
deprecation_date2026-04-22
retirement_date2026-10-23
successorgpt-5.6-terra
o4-miniupdateb2f45bfOct 29, 2026, 03:29 AM
descriptiono4-mini is our latest small o-series model. It's optimize...→Status: Shut down
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Fine-tuning","unit":"","columns":["Training","...
o4-miniupdate4e8b6afOct 21, 2026, 06:35 AM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
o4-miniupdate118451aSep 24, 2026, 07:08 AM
descriptiono4-mini is our latest small o-series model. It's optimize...→o4-mini is our latest small o-series model. It's optimize...
pricingtiers[{"label":"Fine-tuning","unit":"","columns":["Training","...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
deprecation_date2026-04-22
retirement_date2026-10-23
successorgpt-5.6-terra
o4-miniupdatee3d7dedAug 31, 2026, 04:13 AM
statusactive→deprecated
taglineFast, cost-efficient reasoning model, succeeded by GPT-5 ...→Fast, cost-efficient reasoning model, succeeded by GPT-5 ...
tools["function_calling"]→["function_calling","file_search","code_interpreter","mcp...
page_urlhttps://developers.openai.com/api/docs/models/o4-mini?sna...→https://developers.openai.com/api/docs/models/o4-mini
o4-miniupdatee8ec634Mar 24, 2026, 07:27 PM
knowledge_cutoff2024-05→2024-06
o4-miniupdatefa2bbbbMar 24, 2026, 05:22 AM
capabilitiesjson modeno→yes
o4-miniupdatef43e286Mar 24, 2026, 04:45 AM
capabilitiesjson modeyes→nobatchyes
o4-miniupdate1cd659eMar 24, 2026, 04:19 AM
knowledge_cutoff2024-06→2024-05
capabilitiesjson modeyes
page_urlhttps://platform.openai.com/docs/models/o4-mini→https://developers.openai.com/api/docs/models/o4-mini?sna...
o4-miniupdateb301ebeMar 23, 2026, 11:47 PM
knowledge_cutoff2024-05→2024-06
o4-miniupdate2b100acMar 23, 2026, 05:30 AM
tools["function_calling","file_search","code_interpreter","mcp...→["function_calling"]
licenseproprietary
page_urlhttps://platform.openai.com/docs/models/o4-mini
open_weightno
release_date2025-04-16
o4-miniupdateb50649fMar 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
taglineFast, cost-efficient reasoning model, succeeded by GPT-5 ...
tools["function_calling","file_search","code_interpreter","mcp...
endpoints["chat_completions","responses","batch","fine_tuning"]
o4-minicreate7f5c66fMar 21, 2026, 05:16 AM