Model

OpenAI o1

CLOSED

OpenAI · o1 family · released Dec 5, 2024

Full reasoning flagship (API snapshot o1-2024-12-17); added vision and function calling vs o1-preview; scheduled API shutdown 2026-10-23.

ReasoningCodingVisionFunction callingTool useAgentic

1582.8

Elo · rank #105

Parameters

Undisclosed

Active params

—

Context

200K tokens

Architecture

Dense transformer reasoning model (size undisclosed)

License

Proprietary

Languages

—

API price (in/out)

$15 / $60

Modalities

text · vision

Benchmark results

Bar shows position within the tracked field; marker = field best

AIMEMath74.3%#93

best: GPT-5.2 · 100.0%

ARC-AGI-1Reasoning32.0%#14

best: GPT-5.6 · 96.5%

CharXivVision55.1%#28

best: Muse Spark 1.1 (xhigh) · 88.4%

CodeforcesCoding1891#25

best: DeepSeek-V4-Pro (Think Max) · 3206

DROPReasoning90.2#7

best: Hunyuan-T1 · 93.1

GPQA DiamondReasoning78.0%#91

best: GPT-5.6 · 94.6%

Humanity's Last ExamReasoning8.0%#99

best: Claude Sonnet 5 · 57.4%

LiveCodeBenchCoding63.4%#91

best: DeepSeek-V4-Pro (Think Max) · 93.5%

MATH-500Math96.4%#25

best: GPT-5 · 99.4%

MathVistaVision71.8%#23

best: Seed 2.1 Pro · 90.7%

MGSMMath89.3%#16

best: OpenAI o4-mini · 93.7%

MMLUKnowledge91.8%#3

best: OpenAI o3 · 92.9%

MMMUVision77.6%#29

best: Claude Fable 5 · 89.3%

SimpleQAKnowledge42.6%#9

best: GPT-4.5 · 62.5%

SWE-bench VerifiedCoding48.9%#93

best: Claude Fable 5 · 95.0%

Run it locally

Closed weights — available via API only. No local deployment.

Input / M tok

$15

Output / M tok

$60

o1 family

Elo progression across releases

OpenAI o1-miniSep 20241261.7 OpenAI o1-previewSep 20241380.6 OpenAI o1Dec 20241582.8 OpenAI o1-proDec 20241700.4

Resources

DOCSdevelopers.openai.com/api/docs/models/o1 APIAvailable via OpenAI API

API price $15/$60 · each benchmark row carries its own source badge (see methodology)