Gemini 2.5 Flash vs o1

Detailed comparison of capabilities, features, and performance.

Gemini 2.5 Flash

Gemini 2.5 Flash

Google
VS
o1

o1

OpenAI
Feature Gemini 2.5 Flash o1
AI Lab Google OpenAI
Context Size 1,048,576 tokens 128,000 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. o1 is OpenAI's new reasoning model for complex tasks that require broad general knowledge

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