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Gemini 1.5 Flash vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 24.6% higher average benchmark score. Gemini 1.5 Flash offers 756.8K more tokens in context window than o3. Gemini 1.5 Flash is $9.25 cheaper per million tokens. Overall, o3 is the stronger choice for coding tasks.
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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 represents the next generation in OpenAI's reasoning model series, developed to advance the capabilities of deliberate, step-by-step problem solving. Built to handle increasingly complex challenges across mathematics, science, and coding, it continues the evolution of reasoning-focused AI with improved analytical depth and accuracy.
11 months newer
Gemini 1.5 Flash
2024-05-01
o3
OpenAI
2025-04-16
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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($9.25 cheaper)
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o3
Input:$2.00
Output:$8.00
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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Gemini 1.5 Flash
Average Score:59.7%
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o3
Average Score:84.3%(+24.6%)
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Flash
2023-11-01
o3
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
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Gemini 1.5 Flash
Avg Score:59.7%
Providers:1
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o3
Avg Score:84.3%(+24.6%)
Providers:1