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o1

Previous full o-series reasoning model.

OpenAIo12024-12-17Report incorrect data

Specs

Context
200K
Max output
100K
Input price
$15/ 1M tokens
Output price
$60/ 1M tokens
Released
2024-12-17

Context

Context window
200K
Max input
—
Max output
100K

Pricing · USD / 1M tokens

Input
$15
Output
$60
Cache read
$7.5
Cache write
—

Modalities

Input
TextImage
Output
Text

API

API types
chatresponsesbatch

Reasoning

Reasoning
Yes
Levels
—

Info

Status
Deprecated
Released
2024-12-17
Knowledge cutoff
2023-10-01

Features

Confirmed
toolsstructured_outputstreamingbatch
Source · official docsVerified 2026-10-11

How to call

1 provider

openaimodel = o1reasoning = reasoning.effort

chat
POSThttps://api.openai.com/v1/chat/completions
responses
POSThttps://api.openai.com/v1/responses
batch
POSThttps://api.openai.com/v1/batches

JSON

Standard format
o1.json
{
  "id": "o1",
  "object": "model",
  "created": 1734393600,
  "owned_by": "openai",
  "name": "o1",
  "api": {
    "types": [
      "chat",
      "responses",
      "batch"
    ]
  },
  "limits": {
    "context": 200000,
    "input": null,
    "output": 100000
  },
  "modalities": {
    "input": [
      "text",
      "image"
    ],
    "output": [
      "text"
    ]
  },
  "reasoning": {
    "supported": true,
    "efforts": []
  },
  "pricing": {
    "currency": "USD",
    "unit": "1M_tokens",
    "input": 15,
    "output": 60,
    "cache_read": 7.5,
    "cache_write": null
  },
  "features": [
    "tools",
    "structured_output",
    "streaming",
    "batch"
  ],
  "info": {
    "status": "deprecated",
    "release_date": "2024-12-17",
    "knowledge_cutoff": "2023-10-01",
    "description": "Previous full o-series reasoning model.",
    "docs": "https://developers.openai.com/api/docs/models/o1",
    "verified_at": "2026-10-11"
  }
}

Official sources

5