o1-mini-2024-09-12

reasoningdeprecatedproprietary

The o1 reasoning model is designed to solve hard problems across domains. o1-mini is a faster and more affordable reasoning model, but we recommend using the newer o3-mini model that features higher intelligence at the same latency and price as o1-mini.

Intelligence
Reasoning
Speed
Context
128K
Max output
66K
Input price
$1.1/1M tokens
Output price
$4.4/1M tokens
Alias ofo1-mini

Capabilities

Reasoning & Interaction
Reasoning
Infrastructure
Streaming

Details

Provider OpenAI
Creator openai
Familyo1
Licenseproprietary
Statusdeprecated
Typereasoning
Input modalitiestext
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window128K tokens
Max input—
Max output66K tokens
Reasoning tokensYes
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Endpoints

Chat CompletionsPOST
Generate chat responses with messageshttps://api.openai.com/v1/chat/completions
AssistantsPOST
Persistent assistants with tools and fileshttps://api.openai.com/v1/assistants

Pricing

Text tokensPer 1M tokens
InputCached inputOutput
Standard$1.1$0.55$4.4

Family Comparison: o1

ModelContextMax outPricing
o1-mini128K66K$1.1$4.4
o1 Preview128K33K$15$60
o1200K100K$15$60
o1-pro200K100K$150$600

API

GET/v1/models/openai/o1-mini-2024-09-12

o1-mini-2024-09-12

deprecated

The o1 reasoning model is designed to solve hard problems across domains. o1-mini is a faster and more affordable reasoning model, but we recommend using the newer o3-mini model that features higher intelligence at the same latency and price as o1-mini.

Changes · 11 entries
o1-mini-2024-09-12updateca7a400Nov 2, 2026, 03:02 AM
statusactive→deprecated
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
o1-mini-2024-09-12updateb2f45bfOct 29, 2026, 03:29 AM
statusactive→deprecated
o1-mini-2024-09-12update118451aSep 24, 2026, 07:08 AM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...→[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
o1-mini-2024-09-12updatee8ec634Mar 24, 2026, 07:27 PM
knowledge_cutoff2023-09→2023-10
o1-mini-2024-09-12updatef43e286Mar 24, 2026, 04:45 AM
capabilitiesvisionnotool callnostructured outputnojson modenofine tuningno
o1-mini-2024-09-12update1cd659eMar 24, 2026, 04:19 AM
knowledge_cutoff2023-10→2023-09
page_urlhttps://platform.openai.com/docs/models/o1-mini→https://developers.openai.com/api/docs/models/o1-mini?sna...
o1-mini-2024-09-12updateb301ebeMar 23, 2026, 11:47 PM
knowledge_cutoff2023-09→2023-10
o1-mini-2024-09-12update2b100acMar 23, 2026, 05:30 AM
licenseproprietary
release_date2024-09-12
page_urlhttps://platform.openai.com/docs/models/o1-mini
open_weightno
o1-mini-2024-09-12updateb50649fMar 21, 2026, 11:58 PM
pricingtiers[{"label":"Text tokens","unit":"Per 1M tokens","columns":...
descriptionThe o1 reasoning model is designed to solve hard problems...
knowledge_cutoff2023-09
model_typereasoning
reasoning_tokensyes
reasoning3
taglineThe o1 reasoning model is designed to solve hard problems...
capabilitiesstreamingyesreasoningyes
endpoints["chat_completions","assistants"]
o1-mini-2024-09-12updatec9a70c5Mar 21, 2026, 08:12 AM
pricinginput$1.1output$4.4cached input$0.55batch input$0.55batch output$2.2
o1-mini-2024-09-12create7f5c66fMar 21, 2026, 05:16 AM