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o1

Model spec
Provider
OpenAI
Context window
200K ctx
Max output
100K ctx
Input price
$15 / 1M tokens
Output price
$60 / 1M tokens
License
Proprietary
Open weights
No

The o1 model represents OpenAI’s specialized offering for reasoning-intensive applications, particularly in technical domains like mathematics, programming, and scientific inquiry. With a 200K token context window and 100K token output limit, it stands among the more capable models for processing and generating long-form technical content, though its proprietary nature and pricing structure may deter some users. Developers working on complex analytical systems in STEM fields will find o1 most compelling, while those needing open weights or multimodal capabilities should evaluate alternatives. The model’s compute-intensive approach to difficult problems positions it as a premium tool rather than a general-purpose solution.

Modality

Text

Use cases

Solving advanced mathematical problemsGenerating or debugging complex codeAnswering nuanced scientific questionsPerforming logical reasoning tasksAnalyzing technical documentation

Pros & cons

Pros

  • Large context window (200K tokens) enables processing of lengthy or complex inputs
  • High max output (100K tokens) supports detailed responses
  • Specialized for reasoning-heavy tasks in STEM fields
  • Backed by OpenAI's infrastructure and research

Cons

  • Proprietary license restricts usage and customization
  • Higher output pricing (60.0 vs 15.0 input) for generated content
  • Not open-weights, limiting transparency and fine-tuning options
  • Modality limited to text, excluding other data types

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Read the official docs

o1

View documentation