Model Comparison → OpenAI

o1

o1 by OpenAI. Input: $15.00/M tokens · Output: $60.00/M tokens · 200K context window.

✓ Vision✓ Tool use✓ Prompt caching✓ ReasoningSlow
Pricing (verified 2026-08-19)
TypePrice / 1M tokensNotes
Input$15.00Per 1M input tokens
Output$60.00Per 1M output tokens
Cache read$7.50Cached prefix read-back
Source: OpenAI official pricing page · Last verified 2026-08-19
Context Window
200K tokens
≈ 150K words · 1 pages of text

Calculate your o1 costs

Prompt Cost Calculator
Exact cost for your prompt
Agent Cost Calculator
Multi-step agent loops
Prompt Caching Calculator
Caching savings
Conversation Cost
Chat history strategies

Other OpenAI models

GPT-5.4 — $2.50/MGPT-5 mini — $0.25/MGPT-4o — $2.50/M

Pricing verified 2026-08-19 from OpenAI official pricing. All prices in USD per 1M tokens. See methodology and price changelog.