The OpenAI o3-mini is a high-speed, cost-effective reasoning model designed for STEM applications, with strong performance in science, mathematics, and coding. Launched in January 2025, it includes essential developer features such as function calling, structured outputs, and developer messages. The model offers three reasoning effort levels—low, medium, and high—allowing users to optimize between deeper analysis and faster response times. Unlike the o3 model, it lacks vision capabilities. Initially available to select developers in API usage tiers 3-5, it can be accessed via the Chat Completions API, Assistants API, and Batch API.
Gemini 2.0 Flash Thinking is an advanced reasoning model designed to enhance performance and explainability by making its thought process visible. It excels in complex problem-solving, coding challenges, and mathematical reasoning, demonstrating step-by-step solutions. Optimized for tasks that demand detailed explanations and logical analysis, the model also features native tool integration, including code execution and Google Search capabilities.
| o3-mini | Gemini 2.0 Flash Thinking | |
|---|---|---|
Web Site
| ||
Provider
| ||
Chat
| ||
Release Date
| ||
Modalities
| text | text images |
API Providers
| OpenAI API | Google AI Studio, Vertex AI, Gemini API |
Knowledge Cut-off Date
| Unknown | 04.2024 |
Open Source
| No | No |
Pricing Input
| $1.10 per million tokens | Not available |
Pricing Output
| $4.40 per million tokens | Not available |
MMLU
| 86.9% pass@1, high effort Source | Not available |
MMLU-Pro
| Not available | Not available |
MMMU
| Not available | 75.4% Source |
HellaSwag
| Not available | Not available |
HumanEval
| Not available | Not available |
MATH
| 97.9% pass@1, high effort Source | Not available |
GPQA
| 79.7% 0-shot, high effort Source | 74.2% Diamond Science Source |
IFEval
| Not available | Not available |
SimpleQA
| - | - |
AIME 2024 | - | - |
AIME 2025 | - | - |
Aider Polyglot
| - | - |
LiveCodeBench v5
| - | - |
Global MMLU (Lite)
| - | - |
MathVista
| - | - |
Mobile Application |
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