o3 Mini High
Summary
o3 Mini High is a language model from OpenAI, released on 12 Feb 2025. It accepts text and files and generates text, with a 200K-token context window and up to 100K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $1.10 per million input tokens and $4.40 per million output tokens (OpenRouter), across 1 provider we track.
OpenAI o3-mini-high is the same model as [o3-mini](/openai/o3-mini) with reasoning_effort set to high. o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and...
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | OpenAI |
|---|---|
| Release date | 12 Feb 2025 [OpenRouter] |
| Status | Generally available |
| Context window | 200K (200,000 tokens) [OpenRouter] |
| Max output | 100K tokens [OpenRouter] |
| Knowledge cutoff | 31 Oct 2023 [OpenRouter] |
| Input | Text and files [OpenRouter] |
| Output | Text [OpenRouter] |
| Reasoning mode | Yes [OpenRouter] |
| Tool calling | Yes [OpenRouter] |
| Structured output | Yes [OpenRouter] |
o3 Mini High API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| OpenRouter openai/o3-mini-high | $1.10 | $4.40 | $0.55 | 200K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
What is the context window of o3 Mini High?
o3 Mini High has a context window of 200,000 tokens (200K) and can generate up to 100,000 tokens in a single response, according to OpenRouter.
How much does the o3 Mini High API cost?
o3 Mini High is listed from $1.10 per million input tokens and $4.40 per million output tokens (OpenRouter). Prices last verified 4 Oct 2026.
When was o3 Mini High released?
OpenAI released o3 Mini High on 12 Feb 2025, according to OpenRouter.
Change history
No changes detected since we started tracking this model. We re-check every source daily.