OpenAI has launched a newer model, o3, we suggest considering this model instead.
For more information, see Comparison of o3 to other models and API provider benchmarks for o3.
o1-preview Intelligence, Performance & Price Analysis
Model summary
Intelligence
Artificial Analysis Intelligence Index
Speed
Output tokens per second
Input Price
USD per 1M tokens
Output Price
USD per 1M tokens
Verbosity
Output tokens from Intelligence Index
Metrics are compared against models of the same class:
- Non-reasoning models → compared only with other non-reasoning models
- Reasoning models → compared across both reasoning and non-reasoning
- Open weights models → compared only with other open weights models of the same size class:
- Tiny: ≤4B parameters
- Small: 4B–40B parameters
- Medium: 40B–150B parameters
- Large: >150B parameters
- Proprietary models → compared across proprietary and open weights models of the same price range, using a blended 3:1 input/output price ratio:
- <$0.15 per 1M tokens
- $0.15–$1 per 1M tokens
- >$1 per 1M tokens
| Reasoning | Yes This page shows the reasoning version of this model. A non-reasoning variant may also exist. |
|---|---|
| Input modality | Supports: This information is still being updated |
| Output modality | This information is still being updated |
| Knowledge cutoff | Oct 1, 2023 |
| Context window | 128k ~192 A4 pages of size 12 Arial font |
o1-preview is below average in intelligence and particularly expensive when comparing to other models of similar price. The model has a 128k tokens context window with knowledge up to October 2023.
o1-preview scores 24 on the Artificial Analysis Intelligence Index, placing it below average among comparable models (averaging 28). When evaluating the Intelligence Index, it generated 0.0 tokens, which is very concise in comparison to the average of 13M.
Pricing for o1-preview is $16.50 per 1M input tokens (expensive, average: $1.60) and $66.00 per 1M output tokens (expensive, average: $10.00).
Intelligence
Artificial Analysis Intelligence Index
Artificial Analysis Intelligence Index by Open Weights / Proprietary
Intelligence Evaluations
Openness
Artificial Analysis Openness Index: Results
Intelligence Index Comparisons
Intelligence vs. Price
Intelligence Index Token Use & Cost
Output Tokens Used to Run Artificial Analysis Intelligence Index
Cost to Run Artificial Analysis Intelligence Index
Context Window
Context Window
Pricing
Pricing: Input and Output Prices
Intelligence vs. Price (Log Scale)
Pricing Comparison of o1-preview API Providers
Speed
Measured by Output Speed (tokens per second)
Output Speed
Output Speed vs. Price
Latency
Measured by Time (seconds) to First Token
Latency: Time To First Answer Token
End-to-End Response Time
Seconds to output 500 Tokens, calculated based on time to first token, 'thinking' time for reasoning models, and output speed
End-to-End Response Time
Model Size (Open Weights Models Only)
Model Size: Total and Active Parameters
Comparisons to o1-preview
o1-preview
gpt-oss-20B (high)
gpt-oss-120B (high)
GPT-5.2 (xhigh)
GPT-5.4 (xhigh)
GPT-5.4 Pro (xhigh)
GPT-5.3 Codex (xhigh)
Llama 4 Maverick
Gemini 3.1 Flash-Lite Preview
Gemini 3.1 Pro Preview
Gemini 3 Flash
Claude 4.5 Haiku
Claude Sonnet 4.6 (max)
Claude Opus 4.6 (max)
Mistral Large 3DeepSeek V3.2
Grok 4.20 Beta 0309
Grok 4.1 Fast
Nova 2.0 Pro Preview (medium)
MiniMax-M2.5
NVIDIA Nemotron 3 Super
NVIDIA Nemotron 3 Nano
Kimi K2.5
K-EXAONEMiMo-V2-Flash (Feb 2026)
K2 Think V2
Mi:dm K 2.5 ProGLM-5
Qwen3.5 397B A17B
Frequently Asked Questions
Common questions about o1-preview
o1-preview was released on September 12, 2024.
o1-preview was created by OpenAI.
o1-preview scores 24 (estimated) on the Artificial Analysis Intelligence Index, placing it below average among other reasoning models in a similar price tier (median: 28).
o1-preview costs $16.50 per 1M input tokens (at the higher end, median: $1.60) and $66.00 per 1M output tokens (at the higher end, median: $10.00), based on the median across providers serving the model.
o1-preview costs $16.50 per 1M input tokens and $66.00 per 1M output tokens (based on the median across providers serving the model). For a blended rate (3:1 input to output ratio), this is $28.88 per 1M tokens. Pricing may vary by provider. Compare provider pricing
When evaluated on the Intelligence Index, o1-preview generated 0.0 output tokens, which is very competitive compared to other reasoning models in a similar price tier (median: 13M).
Yes, o1-preview is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
o1-preview supports text only input.
o1-preview supports text only output.
No, o1-preview does not support image input. It can only process text.
No, o1-preview is not multimodal. It only supports text only input.
o1-preview has a context window of 130k tokens. This determines how much text and conversation history the model can process in a single request.
No, o1-preview is proprietary. The model weights are not publicly available.
o1-preview is a proprietary model and OpenAI has not disclosed the model size or parameter count.
o1-preview achieves a score of 24 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
o1-preview has a knowledge cutoff of October 2023. The model's training data includes information up to this date.
Yes, o1-preview is available via API through 1 provider. Compare API providers
o1-preview is available through 1 API provider. Compare providers