AI Models / Compare

o1

First-generation o-series reasoning model; deprecated in favour of o3.

Creator: OpenAI
Lifecycle: Deprecated
Context: 200.0K
Max output: 100.0K
Released: Dec 17, 2024
Status: up

Input: $15.00 / 1M tokens
Output: $60.00 / 1M tokens
Cached read: $7.50 / 1M tokens
Cached write: — / 1M tokens
Batch discount: 50%
Source: o1 pricing
Verified: Apr 5, 2026 (High)

Capabilities

Modalities: textimage→text
Capabilities: reasoningimageInputbatchSupportpromptCachingfunctionCallingstructuredOutputs
Strengths: Pioneer reasoning model
Tradeoffs: Very expensive, deprecated

Official Links

Intro

https://openai.com/index/learning-to-reason-with-llms/

Docs

https://developers.openai.com/api/docs/models

Pricing

https://platform.openai.com/docs/pricing/

Release note

https://help.openai.com/en/articles/9624314-model-release-notes

Benchmark Coverage

Benchmark	Version	Score	Date	Source	Notes
GPQA Diamond	2024	77.3 %	Dec 1, 2024	OpenAI	Vendor-reported
AIME 2024	2024	79.2 %	Dec 1, 2024	OpenAI	Vendor-reported

Release History

Release	Alias	Lifecycle	Release Date	Deprecation	Shutdown	Summary
o1	o1	Deprecated	Dec 17, 2024	—	—	Current published model family snapshot.

Host Coverage

Host	Type	Context	Pricing Note	Differences
OpenAI API	first-party	200.0K	Deprecated; migrate to o3.	—

Migration Guidance

Migrate to o3 for better performance at lower cost.

Replacement models: o3

Change Events

Date	Type	Title	Description	Source
Dec 17, 2024	family_added	o1 published	Initial public model family launch.	o1 release notes

Other models from OpenAI

GPT-3.5 Turbo, GPT-4.1, GPT-4.1 mini, GPT-4.1 nano, GPT-4o, GPT-4o, GPT-4o mini, GPT-4o mini, GPT-5.4, GPT-5.4 mini, GPT-5.4 nano, o3, o3-mini, o4-mini