Gemini 2.5 Flash Experimental vs o3

Detailed comparison of capabilities, features, and performance.

Feature
Gemini 2.5 Flash Experimental
o3
Model Image
Gemini 2.5 Flash Experimental
o3
AI Lab
Google
OpenAI
Context Size
1,048,576 tokens
200,000 tokens
Max Output Size
64,000 tokens
100,000 tokens
Frontier Model
No
Yes
Vision Support
Yes
Yes
Description
Multimodal model that is fast, token efficient and performant for complex tasks. 1M context window.
o3 is powerful across all domains. It excels at Math, Science, Coding and Visual Reasoning tasks. Best for multi-step problems, not everyday.

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