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Gemini 1.5 Flash vs o3-pro
Comprehensive side-by-side LLM comparison
Gemini 1.5 Flash offers 756.8K more tokens in context window than o3-pro. Gemini 1.5 Flash is $99.25 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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Gemini 1.5 Flash was created as a fast and efficient multimodal model, designed to provide quick responses while handling text, images, and other modalities. Built for applications requiring low latency and high throughput, it balances capability with speed to serve real-time and high-volume use cases.
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OpenAI
o3-pro was developed as the flagship reasoning model in the o3 family, designed to deliver maximum reasoning depth and reliability for the most challenging analytical tasks. Built for professionals requiring the highest level of thoughtful problem-solving, it extends reasoning capabilities to handle complex multi-step challenges across diverse domains.
1 year newer
Gemini 1.5 Flash
2024-05-01
o3-pro
OpenAI
2025-06-10
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Pricing Comparison
Cost per million tokens (USD)
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Gemini 1.5 Flash
Input:$0.15
Output:$0.60($99.25 cheaper)
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o3-pro
Input:$20.00
Output:$80.00
Performance Metrics
Context window and performance specifications
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Flash
2023-11-01
o3-pro
2024-05-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Gemini 1.5 Flash
1 providers
Throughput: 150 tok/s
Latency: 0.3ms
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o3-pro
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Gemini 1.5 Flash
Avg Score:0.0%
Providers:1
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o3-pro
Avg Score:0.0%
Providers:1