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OpenAI o1

Chain-of-Thought Reasoning Foundation
Official Source & Paper
OpenAI logo OpenAI 📄 Proprietary API 🌍 United States (US) 🗓️ Effective Date: 05.12.2024

OpenAI's foundational reasoning model trained via large-scale RL to produce private internal reasoning tokens before answering.

Model Size / Parameters Proprietary Frontier Architecture: Chain-of-Thought Reasoning Foundation
Context Window (Input) 200k tokens Token Capacity
Max Output Tokens 100k tokens Single Generation Limit
Supported Modalities Text, Code, Vision Native Multimodal Ingestion
License & Access Proprietary API Open Weights vs. API
Release Date December 2024 Effective Date: 05.12.2024

Verified Benchmark Results

Standardized academic and industry evaluation benchmarks (Effective Date: 05.12.2024).

MMLU-Pro / 5-Shot General Intellect
91.8%
SWE-bench Verified Software Engineering
48.9%
MATH 500 / AIME Mathematical Reasoning
96.4%
GPQA Diamond Doctoral Science
78.0%
HumanEval / Python Algorithm Synthesis
92.4%

Pricing & Cost Efficiency

Official API token pricing and self-hosted licensing terms.

Input Pricing (Prompt)
$15.00 / 1M tokens
Per 1 million processed tokens
Output Pricing (Generation)
$60.00 / 1M tokens
Per 1 million generated tokens
Verified Datasheet: Source: OpenAI Research Documentation • Effective Date: 05.12.2024
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