Gemini 2.5 Pro is Google's most advanced AI model, engineered for deep reasoning and thoughtful response generation. It outperforms on key benchmarks, demonstrating exceptional logic and coding proficiency. Optimized for building dynamic web applications, autonomous code systems, and code adaptation, it delivers high-level performance. With built-in multimodal capabilities and an extended context window, the model efficiently processes large datasets and integrates diverse information sources to tackle complex challenges.
OpenAI o3 is the most advanced reasoning model from OpenAI, purpose-built for handling complex, high-cognition tasks. Launched in April 2025, it delivers exceptional performance in software engineering, mathematics, and scientific problem-solving. The model introduces three levels of reasoning effort—low, medium, and high—allowing users to balance between latency and depth of reasoning based on task complexity. o3 supports essential tools for developers, including function calling, structured outputs, and system-level messaging. With built-in vision capabilities, o3 can interpret and analyze images, making it suitable for multimodal applications. It’s available through Chat Completions API, Assistants API, and Batch API for flexible integration into enterprise and research workflows.
| Gemini 2.5 Pro | o3 | |
|---|---|---|
Web Site
| ||
Provider
| ||
Chat
| ||
Release Date
| ||
Modalities
| text images voice video | text images |
API Providers
| Google AI Studio, Vertex AI, Gemini app | OpenAI API |
Knowledge Cut-off Date
| - | - |
Open Source
| No | No |
Pricing Input
| Not available | $10.00 per million tokens |
Pricing Output
| Not available | $40.00 per million tokens |
MMLU
| Not available | 82.9% Source |
MMLU-Pro
| Not available | - |
MMMU
| 81.7% Source | - |
HellaSwag
| Not available | - |
HumanEval
| Not available | - |
MATH
| Not available | - |
GPQA
| 84.0% Diamond Science Source | 83.3% Diamond, no tools Source |
IFEval
| Not available | - |
SimpleQA
| 52.9% | - |
AIME 2024 | 92.0% | 91.6% Source |
AIME 2025 | 86.7% | 88.9% Source |
Aider Polyglot
| 74.0% / 68.6% | - |
LiveCodeBench v5
| 70.4% | - |
Global MMLU (Lite)
| 89.8% | - |
MathVista
| - | - |
Mobile Application | ||
VideoGameBench | ||
Total score | 0.48% | - |
Doom II | 0% | - |
Dream DX | 4.8% | - |
Awakening DX | 0% | - |
Civilization I | 0% | - |
Pokemon Crystal | 0% | - |
The Need for Speed | 0% | - |
The Incredible Machine | 0% | - |
Secret Game 1 | 0% | - |
Secret Game 2 | 0% | - |
Secret Game 3 | 0% | - |
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