OpenAI
o1
The latest and strongest model family from OpenAI, o1 is designed to spend more time thinking before responding.
At a glance
- Input / 1M
- $15
- Output / 1M
- $60
- Context
- 200K
- Max output
- 100K
- Intelligence
- 15.2
- Released
- Dec 2024
Pricing
o1 API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $15 |
|---|---|
| Output tokensPer 1M tokens | $60 |
| Cached input (read)Per 1M tokens | $7.50 |
| Cache writePer 1M tokens | Not available |
| Web searchPer request | $0.01 |
Chat message
2K in, 500 out
$60
per 1,000 requests
Coding task
30K in, 4K out
$690
per 1,000 requests
Long document summary
150K in, 2K out
$2370
per 1,000 requests
Benchmarks
o1 benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
15.2
Coding index
39.7
Agentic index
Not available
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 200K tokens
- Max output
- 100K tokens
- Input types
- File, Image, Text
- Output types
- Text
- Reasoning effort
- Not available
- Release date
- December 17, 2024
- Knowledge cutoff
- October 31, 2023
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
o1 vs other models
See how o1 stacks up head to head on price, benchmarks, and features.
VSo1 vs o3 Pro
OpenAI vs OpenAI
See comparisonVS
o1 vs Claude Sonnet 4.5
OpenAI vs Anthropic
See comparisonVSo1 vs Claude Sonnet 4
OpenAI vs Anthropic
See comparisonVSo1 vs Claude Haiku 4.5
OpenAI vs Anthropic
See comparisonVSo1 vs o4 Mini
OpenAI vs OpenAI
See comparisonVS
o1 vs Gemini 2.5 Pro
OpenAI vs Google
See comparisonAlternatives
o1 alternatives
Similar models worth considering, and where each one has the edge.
OpenAI
o3 Pro
Anthropic
Claude Sonnet 4.5
Anthropic
Claude Sonnet 4
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does o1 cost?
o1 costs $15 per 1M input tokens and $60 per 1M output tokens through the API. A typical chat message costs about $60 per 1,000 messages.
What is the context window of o1?
o1 accepts up to 200K tokens of input and can write up to 100K tokens in a single response.
What is the best alternative to o1?
o3 Pro from OpenAI is a strong alternative. It offers: higher intelligence score, newer release.
Can I use o1 alongside other models?
Yes. Shortcut Chat sends one prompt to o1 and any other models you pick at the same time, so you can compare answers side by side.
Try o1 next to every other model.
Use o1 alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.