o1
The latest and strongest model family from OpenAI, o1 is designed to spend more time thinking before responding. The o1 model series is trained with large-scale reinforcement learning to reason using chain of thought.
The o1 models are optimized for math, science, programming, and other STEM-related tasks. They consistently exhibit PhD-level accuracy on benchmarks in physics, chemistry, and biology. Learn more in the launch announcement.
- Organization
- OpenAI
- Family
- o
- Providers
- 11
- Context
- 200,000
- Output limit
- 100,000
- Knowledge
- 2023-09
- Release
- 2024-12-05
- Updated
- —
- Weights
- Closed
- Input
- text, image/jpeg, image/png, image/gif, image/webp, application/pdf
- Output
- text
- Capabilities
- —
Providers
Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.
| Provider | Model ID | Context | Output | Input / output · 1M | Reasoning | Tools | Structured | Details |
|---|---|---|---|---|---|---|---|---|
| AI/ML API | openai/o1 | 128,000 | 100,000 | — / — | — | — | — | View |
| DigitalOcean | openai-o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| Eden AI | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| Helicone | o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| Impossibl | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| Kilo Gateway | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| Merge Gateway | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| NanoGPT | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| OpenAIvia OpenRouter | openai/o1 unknown | 200,000 | 100,000 | $15.00 / $60.00 | Yes | Yes | Yes | View |
| Poe | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
| Vercel AI Gateway | openai/o1 | 200,000 | 100,000 | — / — | — | — | — | View |
Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.
Pricing
Compare token rates and cache charges across available routes and hosting configurations.
Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.
openai/o1Observed - Input
- $15.00
- Output
- $60.00
- Cache read
- $7.50
Additional fees and pricing conditions
- web search
- $0.01 / search
Hosting prices through OpenRouter All endpoints and cache rates
| Endpoint | Input / 1M | Output / 1M | Cache read / 1M | Cache write / 1M |
|---|---|---|---|---|
| OpenAIopenai | $15.00 | $60.00 | $7.50 | — |
Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.
Performance
Review reported latency and output-throughput percentiles from the latest observed rolling window.
Time to first token · milliseconds
All latency percentiles 1 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| OpenAIopenai | 1,256.5 ms | 1,561 ms | 1,741.6 ms | 1,780.66 ms |
Output throughput · tokens per second
All throughput percentiles 1 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| OpenAIopenai | 87 t/s | 90.5 t/s | 92.6 t/s | 93.86 t/s |
Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.
Uptime
Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.
Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.
Benchmarks
Review attributed evaluation results on each source's original scale.
openai/o1Observed Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.
Detailed evaluations
| Evaluation | Configuration | Source | Results | Details |
|---|---|---|---|---|
| Composite indices | o1openai/o1-2024-12-17 | Artificial Analysis | Intelligence 15.2 · Coding 39.7 · Agentic — | Details |
Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 25, 2026.
Technical details & API
Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.
openai/o1Observed - Context
- 200,000
- Maximum output
- 100,000
- Tokenizer
- GPT
- Input
- text, image, file
- Output
- text
- Moderation
- Yes
- Knowledge cutoff
- 2023-10-31
- Added to OpenRouter
- 2024-12-17
https://openrouter.ai/api/v1openai/o1openai/o1-2024-12-17Reasoning
- Required
- No
- Enabled by default
- Not reported
- Default effort
- —
- Supported efforts
- —
Supported parameters
include_reasoningmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Frequently asked questions
Answers based on the model metadata and serving offers currently in the catalog.
How much does o1 cost?
Listed rates start at $15.00 per million input tokens and $60.00 per million output tokens. Prices vary by provider and configuration; see Pricing for details.
Which providers offer o1?
There are 11 cataloged offers across 11 providers. Compare model IDs, prices and limits in Providers.
What is the context window?
The cataloged model context is 200,000 tokens. Each serving endpoint may apply a different limit.
Does it support tools and structured output?
Tool calling: Not reported. Structured output: Not reported. Support can vary by endpoint.
Catalog history · 3 recorded revisions
Metadata observations since this model was first cataloged. These are not model release versions.
- ·
44e62a5793a0 - ·
f0d5c89cff3d - ·
23cede8959de