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Claude Sonnet 4.5 vs Gemini 2.5 Pro
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 6.1% higher average benchmark score. Gemini 2.5 Pro offers 850.1K more tokens in context window than Claude Sonnet 4.5. Gemini 2.5 Pro is $6.75 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 Pro was developed as Google's most intelligent AI model, designed to comprehend vast datasets and challenging problems from diverse information sources including text, audio, images, and video. Built to handle complex reasoning and multi-step problem solving, it represents Google's flagship offering for enterprise and advanced applications.
4 months newer
Gemini 2.5 Pro
2025-05-20
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 Pro
Input:$1.25
Output:$10.00($6.75 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%(+6.1%)
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Gemini 2.5 Pro
Average Score:76.4%
Performance comparison across key benchmark categories
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Claude Sonnet 4.5
Coding77.2%(+14.0%)
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Gemini 2.5 Pro
Coding63.2%
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Knowledge Cutoff
Training data recency comparison
Claude Sonnet 4.5
2025-01-31
Gemini 2.5 Pro
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%(+6.1%)
Providers:2
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Gemini 2.5 Pro
Avg Score:76.4%
Providers:2