o3 Pro
by OpenAIopenai/o3-pro
LLMCompare cannot run o3 Pro yet.No route to this model is configured on this site yet. Its prices and parameters are listed below for reference.
See the models that can be run nowo3 Pro at a glance
- Context length
- 200,000 tokens
- Maximum output
- 100,000 tokens
- Accepts
- Text, Image, File
- Returns
- Text
- Features
- JSON outputTool callingImage input
- Reasoning effort levels
- Not supported
- Released
- 10 Jun 2025
- Knowledge cutoff
- 30 June 2024
Model facts synced from the OpenRouter model list on 21 Oct 2026.
o3 Pro pricing by route
A route is the service LLMCompare calls to reach the model. o3 Pro has 1 route. Prices are in US dollars.
| Route | On LLMCompare | Inputper 1M tokens | Outputper 1M tokens | Price verified on | Source |
|---|---|---|---|---|---|
| OpenRouterDefault | Not configured | $20.00 | $80.00 | openrouter.ai/openai/o3-pro |
The cost shown in an LLMCompare report is calculated from these prices as they were at the time of the run.
Cost calculator
Estimate what a batch of calls to o3 Pro costs. The starting numbers are examples. Change them to match your task.
- Cost per call
- $0.06
- 72 credits
- Cost of 100 calls
- $6.00
- 7,200 credits
Calculated from the OpenRouter prices verified on 21 Oct 2026. Credits are the cost plus a 20% service fee, at $0.001 per credit, rounded up for each call, with a minimum of 1 per call. A real run is charged for the usage the provider reports.
Parameters you can set
These are the parameters LLMCompare can set when it calls the model through OpenRouter.
| Parameter | Type | Range or options | Default |
|---|---|---|---|
max_tokens | Integer | 1 to 100,000 | Provider default |
seed | Integer | -2,147,483,648 to 4,294,967,295 | Provider default |
response_format | One of | textjson_object | Provider default |
About o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
Description as published for this model. LLMCompare has not edited it.
Models to compare with o3 Pro
Text models from the same provider and models at the nearest price. The order is not a ranking.
| Add to comparison | Model | Context | Max output | Input priceper 1M tokens | Output priceper 1M tokens | Features | Released | On LLMCompare |
|---|---|---|---|---|---|---|---|---|
GPT-4OpenAIopenai/gpt-4 | 8.2k | 4.1k | $30.00 | $60.00 | JSONTools | No route yet | ||
o1OpenAIopenai/o1 | 200k | 100k | $15.00 | $60.00 | JSONToolsCacheVision | No route yet | ||
GPT-5 ProOpenAIopenai/gpt-5-pro | 400k | 128k | $15.00 | $120.00 | ReasoningJSONToolsVision | No route yet | ||
Claude Opus 4.1Anthropicanthropic/claude-opus-4.1 | 200k | 32k | $15.00 | $75.00 | ToolsCacheVision | No route yet | ||
Claude Fable 5.1Anthropicanthropic/claude-fable-5.1 | 1M | 128k | $10.00 | $50.00 | ReasoningJSONToolsCacheVision | No route yet | ||
Claude Fable 5Anthropicanthropic/claude-fable-5 | 1M | 128k | $10.00 | $50.00 | ReasoningJSONToolsCacheVision | No route yet |
Questions about o3 Pro
- How much does o3 Pro cost?
- On the OpenRouter route, o3 Pro costs $20.00 per 1 million input tokens and $80.00 per 1 million output tokens, in US dollars. LLMCompare verified this price on 21 Oct 2026.
- What is the context length of o3 Pro?
- o3 Pro has a context length of 200,000 tokens and returns up to 100,000 output tokens in one call.
- What inputs does o3 Pro accept?
- o3 Pro accepts these inputs: Text, Image, File. o3 Pro returns: Text.
- Can I test o3 Pro on my own data?
- Not yet. LLMCompare lists the prices and parameters of o3 Pro, but no route to o3 Pro is configured on LLMCompare, so it cannot be selected for an evaluation.