Gemini 2.5 Flash vs o3-mini-high

Detailed comparison of capabilities, features, and performance.

Gemini 2.5 Flash

Gemini 2.5 Flash

Google
VS
o3-mini-high

o3-mini-high

OpenAI
Feature Gemini 2.5 Flash o3-mini-high
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 No
Description Multimodal model that is fast, token efficient and performant for complex tasks. 1M context window. o3-mini-high is the higest reasoning level of OpenAI's fast cost-efficient reasoning model tailored to coding math and science use cases

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