OpenAI: o3 Mini

OpenAI: o3 Mini

openai · Released Jan 31, 2025 Professional
Intelligence #9 / 579
82.0 Our Score
Speed #28 / 275
211.0 tokens / sec
Input #449 / 579
$1.10 per 1M tokens
Output #458 / 579
$4.40 per 1M tokens
Context #201 / 579
200,000 tokens

Analysis Summary

OpenAI o3 Mini is a compact reasoning model from OpenAI, released January 2025. It delivers strong livecodebench and GPQA scores relative to its price tier, with tool use and function calling support and a 200K context window. Intelligence and coding indices sit in the mid-range of the current field, below the top-tier flagships but well above entry-level models.

For businesses, o3 Mini is a practical choice for coding assistance, structured reasoning, and tool-driven workflows where cost efficiency matters. The 200K context window supports longer document tasks, and OpenAI's enterprise infrastructure provides reliable uptime and compliance support. It is not a substitute for the full o3 or GPT-5 series on the hardest reasoning tasks.

At $1.10 input and $4.40 output, pricing is moderate. Teams running high-volume coding or reasoning pipelines that do not require frontier-level intelligence will find o3 Mini a well-balanced option from a provider with strong enterprise credentials.

Assessed June 17, 2026

Editorial notes

OpenAI o3 Mini combines strong reasoning and coding with tool use and a 200K context window at a competitive price point from a trusted provider.

Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?

Performance Profile

Intelligence3.6Technical3.2Value7Content0
Intelligence 3.6/10
Technical 3.2/10
Content 0/10
Value 7/10

How OpenAI: o3 Mini compares

OpenAI: o3 Mini ranks #144 of 380 AI models we track for overall intelligence, #160 of 317 for coding, #197 of 292 for agentic tasks. Its 200K-token context window is larger than 65% of the models we list. At $1.10 per million input tokens it is cheaper than 22% of comparable models.

About OpenAI: o3 Mini

OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding. This model supports the reasoning_effort parameter, which can be set to..

Capabilities

Tool Use Function Calling

Performance Indices

Source: Artificial Analysis

19 Intelligence Index
17.9 Coding Index
17.7 Agentic Index

Benchmark Scores

Intelligence

GPQA Diamond 74.8% Graduate-level scientific reasoning
HLE 8.7% Humanity's Last Exam
MMLU Pro 79.1% Multi-task language understanding
MATH 500 97.3% Mathematical problem-solving
AIME 77% Competition mathematics
SciCode 39.9% Scientific computing

Technical

LiveCodeBench 71.7% Live coding evaluation
TerminalBench Hard 6.8% Agentic terminal tasks
τ²-Bench 28.7% Conversational agent benchmark

Benchmark data from Artificial Analysis and Hugging Face

How does OpenAI: o3 Mini stack up?

Compare side-by-side with other professional models.

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Model Information

OpenRouter ID openai/o3-mini
Provideropenai
Model Familyo3
Release Date January 31, 2025
Context Length200,000 tokens
Max Completion100,000 tokens
Status Active

Pricing

Token Type Cost per 1M tokens Cost per 1K tokens
Input $1.10 $0.001100
Output $4.40 $0.004400

Live Performance

Live endpoint metrics, refreshed every 30 minutes.

100%
Avg Uptime
7,747ms
Best Latency (TTFT)
139 tok/s
Best Throughput
1/1
Active Endpoints
Available via: OpenAI

Leaderboard Categories

Frequently asked questions about OpenAI: o3 Mini

How much does OpenAI: o3 Mini cost?

OpenAI: o3 Mini costs $1.10 per million input tokens and $4.40 per million output tokens.

What is the context window of OpenAI: o3 Mini?

OpenAI: o3 Mini has a context window of 200,000 tokens (200K).

Is OpenAI: o3 Mini good for coding?

On our coding benchmark index, OpenAI: o3 Mini ranks #160 of 317 models, placing it in the broader range of the field for code generation and debugging.

What can OpenAI: o3 Mini do?

OpenAI: o3 Mini supports tool use and function calling.

Who created OpenAI: o3 Mini?

OpenAI: o3 Mini is developed by OpenAI and was released on January 31, 2025.