o3 Pro
OpenAI · released Jun 10, 2025
- Type
- Proprietary
- Input
- $20.00
- Output
- $80.00
- Cached
- Not published
List price · per 1M tokens · OpenAI at 200K context · source ↗
Our take
Written Aug 2, 2026o3 Pro is OpenAI's hosted-only reasoning model built for complex documents and images, with a 200,000-token request limit. It is positioned for demanding multimodal analysis where context length matters more than speed or cost.
Choose this when you need to analyse long documents that mix text, images and files, and you specifically want OpenAI's proprietary reasoning stack. Skip it if cost or speed matters — it is the most expensive output in its own data and generates at eight tokens per second, or if you need verified quality scores, which are not yet in our data.
The case for it
- 200,000-token request limit, among the largest we hold for a text-and-image model.
- Hosted by OpenAI directly, with access to their proprietary reasoning stack.
The case against it
- The highest output price in its own data, with no cheaper tier available.
- Extremely slow generation at eight tokens per second on OpenAI's own API.
- No benchmark scores in our data, so there is no measured quality data.
How good is it?
We hold no score for this model.
We look for every model we track on every board we watch, and none of them has turned up o3 Pro — so there is no intelligence, coding, agentic or writing score to show you, not a low one, none.
Or rent it from someone else
Why this differs from the header. The strip above quotes OpenAI's own list price. This is the cheapest live offer at the widest standard context we hold, whoever is serving it — a reseller undercutting a lab is ordinary commerce, not an error.
- per 1M tokens
- $20.00 in / $80.00 out
- Context served
- 200K
- Throughput
- Not measured
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouter | $20.00 / $80.00 | 200K | not measured | Unknown | Unknown | Unknown |
| OpenAI | $20.00 / $80.00 | 200K | 11 tok/s | No | Yesunknown period | Unknown |
Across the 2 listings we hold: 1 say they do not train on prompts, 0 say they do and 1 do not say. 0 appear in the zero-retention registry we check; the rest are unknown to us rather than confirmed either way.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
- ✓
- Supported
- ✗
- Not supported
- Not published
- host gave no parameter list
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouter | ✓ | ✓ | ✓ |
| OpenAI | ✓ | ✓ | ✓ |
Tool calling: 2 of 2 listings say yes. JSON output: 2 of 2 listings say yes. Strict schema: 2 of 2 listings say yes.
Models people weigh against o3 Pro
When we formed this view
Dates behind this page
Prices last checked 9d ago
What we do not know about this model yet
- No board we watch has turned up a score, so we hold no quality figures at all.
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 2 listings do not say whether they train on prompts.
- We hold no cached-input rate for any of its listings.
Licence and identifiers
What the licence allowsWe hold no licence record for this model. Inside are the identifiers you need to pull it — its Hugging Face repo where we have one, our slug and a machine-readable card.
Licence
Commercial API terms. We hold no licence record for this model, so there is nothing to summarise here.
Identifiers
- Modality record
- text+image+file->text
- Catalogue slug
- openai-o3-pro