o3 Mini High
OpenAI · released Feb 12, 2025
- Type
- Closed
- Input
- $1.10
- Output
- $4.40
- Cached
- $0.55
List price · per 1M tokens · OpenAI at 200K context · source ↗
Our take
Written Sep 30, 2026o3 Mini High is a hosted-only reasoning model from OpenAI, reachable through an API rather than downloaded. Its Arena placings sit in the lower half of the field on every board we hold, so it is a predictable choice rather than a leading one.
Use it for long-document work where the request capacity means material need not be split up first, or where you want a hosted model with the same rate at both listed hosts. Both OpenRouter and OpenAI serve it, so the choice between them is not a price decision. Skip it if you need a model near the top of the Arena boards, or if you meant to run the model on your own machine.
The case for it
- Both listed hosts charge the same rate, so picking between them comes down to something other than cost.
- The request capacity leaves room for long documents without splitting them up first, though recall across the whole of it is unverified in our data.
- Text and files go into the same request, so a document can be attached rather than pasted in as prose.
The case against it
- Lower half of the field on every Arena board we hold: 118th of 168 on Arena Text (overall) via High as of 25 Sep 2026, and 105th of 168 on Arena Coding via High as of 25 Sep 2026. These are human preference placings, not correctness scores.
- We list no download for it, so using it means choosing a host.
- Nothing supplied measures serving speed on either host, so latency needs a trial on work you can judge yourself.
How good is it?
EverydayGeneral questions and everyday reasoning
Arena Text (overall)118th of 168 · 1364
CodingWriting and fixing code on its own
Arena Coding105th of 168 · 1435
Arena Coding is the only board that has scored it for this.
AgenticPlanning, calling tools, staying on task
Not yet scored on Arena Agent.
WritingDrafting and rewriting prose
Arena Creative Writing122nd of 168 · 1312
Arena Creative Writing is the only board that has scored it for this.
These tests check whether a model follows instructions — a precondition for all the work above, but not a measure of how well that work is done.
Every published score for this model6 scoresEvery figure we hold, from 6 boards, with who ran it and a link to the source — including the boards no rating above is built on.
Where to rent it
Prices checked 2 hours ago — each listing carries its own date.
OpenAI, through OpenRouter
The lab is also the cheapest we hold. The strip above and this offer are the same one, so nothing on this page undercuts OpenAI on 200K of context.
- per 1M tokens
- $1.10 in / $4.40 out
- Context served
- 200K
- Throughput
- ~114 tok/s
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouterOpenRouter's own listing | $1.10 / $4.40checked 2 hours ago | 200K | not measured | Unknown | Unknown | Unknown |
| OpenAIThrough OpenRouter | $1.10 / $4.40checked 2 hours ago | 200K100K max reply | 114 tok/s | No | Yesunknown period | Unknown |
OpenRouterAcross the 2 listings we hold: 1 says it does not train on prompts, 0 say they do and 1 does not say. 0 appear in the zero-retention registry we check; the rest are unknown to us.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouterOpenRouter's own listing | ✓ | ✓ | ✓ |
| OpenAIThrough OpenRouter | ✓ | ✓ | ✓ |
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 Mini High
When we formed this view
Recent changes
What moved
first indexed by our pipelineEach date is the day we first saw the change, or the day the maker announced it.
What we do not know about this model yet
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 2 listings does not say whether it trains on prompts.
- We hold no batch or off-peak 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
We hold no licence record for this model, and no record of published weights either — so we can neither summarise its terms nor point you at the weights.
Identifiers
- Takes in, gives back
- Text and documents in, text out
- Catalogue slug
- openai-o3-mini-high