Author's Description
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 coding. The model features three adjustable reasoning effort levels and supports key developer capabilities including function calling, structured outputs, and streaming, though it does not include vision processing capabilities. The model demonstrates significant improvements over its predecessor, with expert testers preferring its responses 56% of the time and noting a 39% reduction in major errors on complex questions. With medium reasoning effort settings, o3-mini matches the performance of the larger o1 model on challenging reasoning evaluations like AIME and GPQA, while maintaining lower latency and cost.
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
OpenAI's o3-mini-high, released on February 12, 2025, is a specialized language model optimized for STEM reasoning tasks, building upon the o3-mini model with an elevated reasoning effort setting. The model demonstrates moderate speed performance, ranking in the 27th percentile across benchmarks, and is positioned at premium pricing levels, falling into the 12th percentile. A standout feature is its exceptional reliability, achieving a perfect 100% success rate across all evaluated benchmarks, indicating consistent and stable operation. In terms of performance across categories, o3-mini-high excels in General Knowledge and Reasoning, achieving perfect 100% accuracy in both, with the latter also being the most accurate model at its price point and speed. It shows strong performance in Coding (90% accuracy) and Ethics (98% accuracy). While its Hallucinations Baseline accuracy is 94%, it performs moderately in this area. Its lowest accuracy is in Instruction Following (62%), suggesting this as a potential area for improvement. Overall, the model's strengths lie in its robust reasoning capabilities, particularly in STEM fields, and its high reliability, making it a strong contender for applications requiring precision and consistency despite its premium cost.
Model Pricing
Current Pricing
Feature | Price (per 1M tokens) |
---|---|
Prompt | $1.1 |
Completion | $4.4 |
Input Cache Read | $0.55 |
Price History
Available Endpoints
Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
---|---|---|---|---|
OpenAI
|
OpenAI | openai/o3-mini-high-2025-01-31 | 200K | $1.1 / 1M tokens | $4.4 / 1M tokens |
Benchmark Results
Benchmark | Category | Reasoning | Strategy | Free | Executions | Accuracy | Cost | Duration |
---|
Other Models by openai
|
Released | Params | Context |
|
Speed | Ability | Cost |
---|---|---|---|---|---|---|---|
OpenAI: GPT-4o Audio | Aug 14, 2025 | ~200B | 128K |
Text input
Audio input
Text output
|
— | — | $$$$$ |
OpenAI: GPT-5 Chat | Aug 07, 2025 | — | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-5 | Aug 07, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-5 Mini | Aug 07, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-5 Nano | Aug 07, 2025 | — | 400K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$ |
OpenAI: gpt-oss-120b | Aug 05, 2025 | 120B | 131K |
Text input
Text output
|
★★★ | ★★★★ | $$$ |
OpenAI: gpt-oss-20b | Aug 05, 2025 | 20B | 131K |
Text input
Text output
|
★ | ★★★★ | $$ |
OpenAI: o3 Pro | Jun 10, 2025 | ~400B | 200K |
Image input
File input
Text input
Text output
|
— | — | +$$$$$ |
OpenAI: Codex Mini | May 16, 2025 | — | 200K |
Image input
Text input
Text output
|
★★★ | ★★★★ | $$$$$ |
OpenAI: o4 Mini High | Apr 16, 2025 | — | 200K |
Image input
File input
Text input
Text output
|
★★ | ★★★★ | $$$$$ |
OpenAI: o3 | Apr 16, 2025 | ~400B | 200K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
OpenAI: o4 Mini | Apr 16, 2025 | — | 200K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-4.1 | Apr 14, 2025 | ~1.8T | 1M |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-4.1 Mini | Apr 14, 2025 | ~300B | 1M |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★ | $$$ |
OpenAI: GPT-4.1 Nano | Apr 14, 2025 | ~50B | 1M |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★ | $$ |
OpenAI: o1-pro | Mar 19, 2025 | 300B | 200K |
Image input
File input
Text input
Text output
|
★ | ★★★ | +$$$$$ |
OpenAI: GPT-4o-mini Search Preview | Mar 12, 2025 | ~8B | 128K |
Text input
Text output
|
★★★ | ★★ | $$$ |
OpenAI: GPT-4o Search Preview | Mar 12, 2025 | ~200B | 128K |
Text input
Text output
|
★★★ | ★★★ | $$$$$ |
OpenAI: GPT-4.5 (Preview) Unavailable | Feb 27, 2025 | ~12.8T | 128K |
Image input
Text input
Text output
|
★★★★★ | ★★★★★ | +$$$$$ |
OpenAI: o3 Mini | Jan 31, 2025 | 200B | 200K |
File input
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
OpenAI: o1 | Dec 17, 2024 | 300B | 200K |
Image input
File input
Text input
Text output
|
★★ | ★★★★★ | +$$$$$ |
OpenAI: GPT-4o (2024-11-20) | Nov 20, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★ | $$$$$ |
OpenAI: o1-mini | Sep 11, 2024 | ~100B | 128K |
Text input
Text output
|
— | ★ | $$$$$ |
OpenAI: o1-preview Unavailable | Sep 11, 2024 | 300B | 128K |
Text input
Text output
|
★ | ★★★★★ | +$$$$$ |
OpenAI: o1-preview (2024-09-12) Unavailable | Sep 11, 2024 | 300B | 128K |
Text input
Text output
|
★★ | ★★★★★ | +$$$$$ |
OpenAI: o1-mini (2024-09-12) | Sep 11, 2024 | ~100B | 128K |
Text input
Text output
|
— | ★ | $$$$$ |
OpenAI: ChatGPT-4o | Aug 13, 2024 | ~200B | 128K |
Image input
Text input
Text output
|
★★★★★ | ★★ | $$$$$ |
OpenAI: GPT-4o (2024-08-06) | Aug 05, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
OpenAI: GPT-4o-mini | Jul 17, 2024 | ~8B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★ | $$ |
OpenAI: GPT-4o-mini (2024-07-18) | Jul 17, 2024 | ~8B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★★ | $$ |
OpenAI: GPT-4o | May 12, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-4o (extended) | May 12, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★ | ★★ | +$$$$$ |
OpenAI: GPT-4o (2024-05-13) | May 12, 2024 | ~200B | 128K |
Image input
File input
Text input
Text output
|
★★★★★ | ★★★ | $$$$$ |
OpenAI: GPT-4 Turbo | Apr 08, 2024 | — | 128K |
Image input
Text input
Text output
|
★★★★ | ★★★★ | +$$$$$ |
OpenAI: GPT-3.5 Turbo (older v0613) | Jan 24, 2024 | 175B | 4K |
Text input
Text output
|
★★★★★ | ★ | $$$$ |
OpenAI: GPT-4 Turbo Preview | Jan 24, 2024 | — | 128K |
Text input
Text output
|
★★★★ | ★★ | +$$$$$ |
OpenAI: GPT-3.5 Turbo 16k (older v1106) Unavailable | Nov 05, 2023 | 175B | 16K |
Text input
Text output
|
— | — | $$$$$ |
OpenAI: GPT-4 Turbo (older v1106) | Nov 05, 2023 | — | 128K |
Text input
Text output
|
★★★★ | ★★★★ | +$$$$$ |
OpenAI: GPT-3.5 Turbo Instruct | Sep 27, 2023 | 175B | 4K |
Text input
Text output
|
★★★★★ | ★★ | $$$$ |
OpenAI: GPT-3.5 Turbo 16k | Aug 27, 2023 | 175B | 16K |
Text input
Text output
|
★★★★★ | ★★★★★ | $$$$$ |
OpenAI: GPT-3.5 Turbo 16k Unavailable | May 27, 2023 | 175B | 16K |
Text input
Text output
|
— | — | $$$$ |
OpenAI: GPT-3.5 Turbo | May 27, 2023 | 175B | 16K |
Text input
Text output
|
— | — | $$$$ |
OpenAI: GPT-4 | May 27, 2023 | — | 8K |
Text input
Text output
|
★★★ | ★★ | +$$$$$ |
OpenAI: GPT-4 (older v0314) | May 27, 2023 | — | 8K |
Text input
Text output
|
★★★★ | ★★ | +$$$$$ |