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Gemini 1.5 Pro vs Gemini 2.5 Flash-Lite
Comprehensive side-by-side LLM comparison
Gemini 2.5 Flash-Lite leads with 3.3% higher average benchmark score. Gemini 1.5 Pro offers 991.2K more tokens in context window than Gemini 2.5 Flash-Lite. Gemini 2.5 Flash-Lite is $12.00 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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Gemini 1.5 Pro was introduced as Google's advanced multimodal model with an expanded context window, designed to comprehend and reason across long documents, videos, and audio. Built to handle complex, information-rich tasks, it brought breakthrough capabilities in processing extended context while maintaining high-quality reasoning and generation.
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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 Pro
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 Pro
Input:$2.50
Output:$10.00
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Gemini 2.5 Flash-Lite
Input:$0.10
Output:$0.40($12.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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Gemini 1.5 Pro
Average Score:59.6%
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Gemini 2.5 Flash-Lite
Average Score:62.9%(+3.3%)
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Pro
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 Pro
1 providers
Throughput: 85 tok/s
Latency: 0.7ms
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Gemini 2.5 Flash-Lite
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Gemini 1.5 Pro
Avg Score:59.6%
Providers:1
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Gemini 2.5 Flash-Lite
Avg Score:62.9%(+3.3%)
Providers:1