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Gemini 1.5 Flash vs Gemini 2.5 Flash-Lite
Comprehensive side-by-side LLM comparison
Gemini 2.5 Flash-Lite leads with 8.9% higher average benchmark score. Gemini 2.5 Flash-Lite offers 57.3K more tokens in context window than Gemini 1.5 Flash. Both models have similar pricing. Overall, Gemini 2.5 Flash-Lite 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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Gemini 2.5 Flash Lite was created as the most efficient option in the Gemini 2.5 family, designed to provide cutting-edge capabilities with minimal computational overhead. Built for applications where cost and latency are primary concerns, it extends advanced multimodal understanding to resource-conscious deployments.
1 year newer
Gemini 1.5 Flash
2024-05-01
Gemini 2.5 Flash-Lite
2025-06-17
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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
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Gemini 2.5 Flash-Lite
Input:$0.10
Output:$0.40($0.25 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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Gemini 1.5 Flash
Average Score:54.1%
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Gemini 2.5 Flash-Lite
Average Score:62.9%(+8.9%)
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Flash
2023-11-01
Gemini 2.5 Flash-Lite
2025-01-01
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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Gemini 2.5 Flash-Lite
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Gemini 1.5 Flash
Avg Score:54.1%
Providers:1
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Gemini 2.5 Flash-Lite
Avg Score:62.9%(+8.9%)
Providers:1