o1
OpenAI's first dedicated reasoning model, released December 2024, using chain-of-thought to solve complex math, science and coding problems.
- Context
- 200K tokens
- Max output
- 100K
- Cutoff
- Released
Hosted API price
List price via OpenAI · per 1M tokens
- Input
- $15.00 /1M
- Output
- $60.00 /1M
- Hosted by
-
4 providers
Hosted API pricing
How we price
Order
Providers are listed cheapest input rate first, then by output rate, a tie going to the creator's own listing. A provider that lists the model without a published rate sits at the end.
Prices
Base-tier, on-demand rates in USD per 1M tokens, converted at ECB reference rates where a provider publishes in another currency. Cached-input and batch rates show only where a provider publishes them. "Cheapest" marks the one provider with the lowest input and output pair; a tie wears no badge.
Cost
Input rate times the input tokens plus output rate times the output tokens, at the monthly volume set above the table. Cached-input, batch, long-context and reasoning-token billing are not modelled.
Transparency and funding
- Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.
Every provider serving o1, cheapest input first. Set your monthly volume to see what each would bill.
| Provider | Input /1M | Output /1M | Cached input /1M | Cost at 10M in + 2M out | Link |
|---|---|---|---|---|---|
|
OpenAI
Creator
|
$15.00 | $60.00 | $7.50 | $270.00 | Visit website |
|
DigitalOcean
|
$15.00 | $60.00 | $7.50 | $270.00 | Visit website |
|
Azure
|
$15.00 | $60.00 | $7.50 | $270.00 | Visit website |
|
Replicate
|
$15.00 | $60.00 | $270.00 | Visit website |
Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.
Similarly priced models
The models nearest o1 by blended rate, each at its own cheapest provider.
| Model | Blended /1M | Input /1M | Output /1M | Context | Cutoff | vs o1 |
|---|---|---|---|---|---|---|
|
GPT-5.5
OpenAI
|
$9.1667 | $5.00 | $30.00 | 1M | Dec 2025 | −59% |
|
GPT-4 Turbo
OpenAI
|
$13.3333 | $10.00 | $30.00 | 128K | Dec 2023 | −41% |
Claude Fable 5
Anthropic
|
$16.6667 | $10.00 | $50.00 | 1M | Jan 2026 | −26% |
|
Claude Fable 5.1
Anthropic
|
$16.6667 | $10.00 | $50.00 | 1M | Jun 2026 | −26% |
|
GPT-6 Astra
OpenAI
|
$16.6667 | $10.00 | $50.00 | 1M | Apr 2026 | −26% |
|
o1
This model
OpenAI
|
$22.50 | $15.00 | $60.00 | 200K | Oct 2023 | |
|
o3-pro
OpenAI
|
$30.00 | $20.00 | $80.00 | 200K | Jun 2024 | +33% |
|
GPT-5 Pro
OpenAI
|
$32.50 | $15.00 | $120.00 | 400K | Sep 2024 | +44% |
|
GPT-4
OpenAI
|
$35.00 | $30.00 | $60.00 | 8K | Dec 2023 | +56% |
|
GPT-5.2 Pro
OpenAI
|
$45.50 | $21.00 | $168.00 | 400K | Aug 2025 | +102% |
|
GPT-5.4 Pro
OpenAI
|
$55.00 | $30.00 | $180.00 | 1M | Aug 2025 | +144% |
USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.
Capabilities
What o1 accepts and can do, as published by OpenAI.
- Text Accepts and generates natural-language text.
- Image Accepts images as input alongside text.
- Reasoning Thinks before it answers, always on or as a switchable mode.
- Function calling Connect to external tools, APIs, and systems.
- Structured output Return responses in structured formats like JSON.
- File upload Process uploaded documents, spreadsheets, and other files.
- MCP Connect to services via Model Context Protocol.
Common questions
What is o1 good for?
Reasoning-heavy math, science and coding problems where a long chain of thought is the point. OpenAI calls it its first dedicated reasoning model.
When is o1 not a good fit?
New projects: OpenAI plans to shut it down in October 2026. No web search or code execution, its knowledge is years old, and it sits near the top of OpenAI's price range.
What is the cheapest way to run o1?
The cheapest hosted rate is $15.00 / $60.00 per 1M tokens via OpenAI.
How does o1 compare with o3?
OpenAI says o3 is a step up from o1 in tool use: it is trained to call tools inside its chain of thought, deciding when and how to use them, and can work with images as part of its reasoning, cropping or rotating them as it thinks. Same 200K-token context and text and image input. o1 lists at 650% more per 1M input tokens and 650% more per 1M output tokens than o3. It came out 4 months earlier and has an older knowledge cutoff (October 2023 against June 2024).
Can I self-host o1?
No. OpenAI does not publish the weights; o1 is available only through hosted APIs.
More from OpenAI
-
o3-pro
200K context · cutoff Jun 2024
From $20.00 / $80.00 /1M in / out at the cheapest provider
-
GPT-6 Astra
1M context · cutoff Apr 2026
From $10.00 / $50.00 /1M in / out at the cheapest provider
-
GPT-5 Pro
400K context · cutoff Sep 2024
From $15.00 / $120.00 /1M in / out at the cheapest provider
-
o3-deep-research
200K context · cutoff Jun 2024
From $10.00 / $40.00 /1M in / out at the cheapest provider
-
GPT-4
8K context · cutoff Dec 2023
From $30.00 / $60.00 /1M in / out at the cheapest provider
-
GPT-4 Turbo
128K context · cutoff Dec 2023
From $10.00 / $30.00 /1M in / out at the cheapest provider
-
GPT-5.2 Pro
400K context · cutoff Aug 2025
From $21.00 / $168.00 /1M in / out at the cheapest provider
-
GPT-5.5 Pro
1M context · cutoff Dec 2025
From $30.00 / $180.00 /1M in / out at the cheapest provider