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Gemini 2.5 Flash vs o4-mini
Comprehensive side-by-side LLM comparison
o4-mini leads with 5.8% higher average benchmark score. Gemini 2.5 Flash offers 814.1K more tokens in context window than o4-mini. Gemini 2.5 Flash is $2.70 cheaper per million tokens. Overall, o4-mini is the stronger choice for coding tasks.
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Gemini 2.5 Flash represents a continued evolution of Google's efficient multimodal models, designed to deliver enhanced capabilities while maintaining the performance characteristics valued in the Flash series. Built to serve high-throughput applications with improved quality, it advances the balance between speed and intelligence.
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OpenAI
o4-mini was created as part of the next generation of OpenAI's reasoning models, designed to continue advancing the balance between analytical capability and operational efficiency. Built to bring cutting-edge reasoning techniques to applications requiring quick turnaround, it represents the evolution of compact reasoning-focused models.
1 month newer
o4-mini
OpenAI
2025-04-16
Gemini 2.5 Flash
2025-05-20
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Pricing Comparison
Cost per million tokens (USD)
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Gemini 2.5 Flash
Input:$0.30
Output:$2.50($2.70 cheaper)
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o4-mini
Input:$1.10
Output:$4.40
Performance Metrics
Context window and performance specifications
Average performance across 8 common benchmarks
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Gemini 2.5 Flash
Average Score:64.1%
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o4-mini
Average Score:69.9%(+5.8%)
Performance comparison across key benchmark categories
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Gemini 2.5 Flash
Coding60.4%
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o4-mini
Coding68.1%(+7.7%)
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Knowledge Cutoff
Training data recency comparison
o4-mini
2024-05-31
Gemini 2.5 Flash
2025-01-31
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 2.5 Flash
2 providers
Throughput: 85 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
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Gemini 2.5 Flash
Avg Score:64.1%
Providers:2
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o4-mini
Avg Score:69.9%(+5.8%)
Providers:1