OpenAI has launched a newer model, GPT-5 (high), we suggest considering this model instead.
For more information, see Comparison of GPT-5 (high) to other models and API provider benchmarks for GPT-5 (high).
o3-pro 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: text, image |
| Output modality | Supports: text |
| Knowledge cutoff | Jun 1, 2024 |
| Context window | 200k ~300 A4 pages of size 12 Arial font |
o3-pro is above average in intelligence, but particularly expensive when comparing to other models of similar price. It's also notably slow, however highly concise. The model supports text and image input, outputs text, and has a 200k tokens context window with knowledge up to June 2024.
o3-pro scores 41 on the Artificial Analysis Intelligence Index, placing it above average among comparable models (averaging 31). When evaluating the Intelligence Index, it generated 690k tokens, which is very concise in comparison to the average of 13M.
Pricing for o3-pro is $20.00 per 1M input tokens (expensive, average: $1.35) and $80.00 per 1M output tokens (expensive, average: $8.40). In total, it cost $56.37 to evaluate o3-pro on the Intelligence Index.
At 21 tokens per second, o3-pro is notably slow (65).
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 o3-pro 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
Frequently Asked Questions
Common questions about o3-pro
o3-pro was released on June 10, 2025.
o3-pro was created by OpenAI.
o3-pro scores 41 (estimated) on the Artificial Analysis Intelligence Index, placing it above average among other reasoning models in a similar price tier (median: 31).
o3-pro generates output at 20.7 tokens per second (based on OpenAI's API), which is at the lower end compared to other reasoning models in a similar price tier (median: 64.8 t/s).
o3-pro has a time to first token (TTFT) of 130.41s (based on OpenAI's API), which is at the higher end compared to other reasoning models in a similar price tier (median: 2.66s).
o3-pro costs $20.00 per 1M input tokens (at the higher end, median: $1.35) and $80.00 per 1M output tokens (at the higher end, median: $8.40), based on OpenAI's API.
o3-pro costs $20.00 per 1M input tokens and $80.00 per 1M output tokens (based on OpenAI's API). For a blended rate (3:1 input to output ratio), this is $35.00 per 1M tokens. Pricing may vary by provider. Compare provider pricing
When evaluated on the Intelligence Index, o3-pro generated 690k output tokens, which is very competitive compared to other reasoning models in a similar price tier (median: 13M).
Yes, o3-pro is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
o3-pro supports text and image input.
o3-pro supports text output.
Yes, o3-pro supports image input and can analyze, describe, and answer questions about images.
Yes, o3-pro is multimodal. It can process text and image input and generate text output.
o3-pro has a context window of 200k tokens. This determines how much text and conversation history the model can process in a single request.
No, o3-pro is proprietary. The model weights are not publicly available.
o3-pro is a proprietary model and OpenAI has not disclosed the model size or parameter count.
o3-pro achieves a score of 41 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
o3-pro has a knowledge cutoff of June 2024. The model's training data includes information up to this date.
Yes, o3-pro is available via API through 2 providers. Compare API providers
o3-pro is available through 2 API providers. Compare providers