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Claude Sonnet 4.5 vs Gemini 2.5 Flash-Lite
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 33.9% higher average benchmark score. Gemini 2.5 Flash-Lite offers 850.1K more tokens in context window than Claude Sonnet 4.5. Gemini 2.5 Flash-Lite is $17.50 cheaper per million tokens. Overall, Claude Sonnet 4.5 is the stronger choice for coding tasks.
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Anthropic
Claude Sonnet 4.5 was developed to bridge human thinking and machine assistance, allowing people to work with language and tools in a more conversational and natural way. Built with a focus on turning ideas into results, it represents an evolution in making AI feel less mechanical while maintaining strong capabilities across reasoning, coding, and collaborative tasks.
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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.
3 months newer
Gemini 2.5 Flash-Lite
2025-06-17
Claude Sonnet 4.5
Anthropic
2025-09-29
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Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4.5
Input:$3.00
Output:$15.00
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Gemini 2.5 Flash-Lite
Input:$0.10
Output:$0.40($17.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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Claude Sonnet 4.5
Average Score:82.5%(+33.9%)
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Gemini 2.5 Flash-Lite
Average Score:48.7%
Performance comparison across key benchmark categories
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Claude Sonnet 4.5
Coding77.2%(+45.6%)
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Gemini 2.5 Flash-Lite
Coding31.6%
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Knowledge Cutoff
Training data recency comparison
Gemini 2.5 Flash-Lite
2025-01-01
Claude Sonnet 4.5
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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Claude Sonnet 4.5
2 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Sonnet 4.5
Avg Score:82.5%(+33.9%)
Providers:2
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Gemini 2.5 Flash-Lite
Avg Score:48.7%
Providers:1