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Claude Sonnet 4.5 vs Gemini 2.0 Flash
Comprehensive side-by-side LLM comparison
Gemini 2.0 Flash leads with 8.8% higher average benchmark score. Gemini 2.0 Flash offers 792.8K more tokens in context window than Claude Sonnet 4.5. Gemini 2.0 Flash is $17.50 cheaper per million tokens. Overall, Gemini 2.0 Flash is the stronger choice for coding tasks.
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Anthropic
Claude Sonnet 4.5 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 75.8% across 9 benchmarks. It excels particularly in MMMLU (89.1%), AIME 2025 (87.0%), TAU-bench Retail (86.2%). It supports a 264K token context window for handling large documents. The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents Anthropic's latest advancement in AI technology.
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Gemini 2.0 Flash is a multimodal language model developed by Google. It achieves strong performance with an average score of 66.7% across 13 benchmarks. It excels particularly in Natural2Code (92.9%), MATH (89.7%), FACTS Grounding (83.6%). With a 1.1M token context window, it can handle extensive documents and complex multi-turn conversations. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents Google's latest advancement in AI technology.
10 months newer
Gemini 2.0 Flash
2024-12-01
Claude Sonnet 4.5
Anthropic
2025-09-29
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 2.0 Flash
Input:$0.10
Output:$0.40($17.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 21 common benchmarks
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Claude Sonnet 4.5
Average Score:32.5%
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Gemini 2.0 Flash
Average Score:41.3%(+8.8%)
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Knowledge Cutoff
Training data recency comparison
Gemini 2.0 Flash
2024-08-01
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:32.5%
Providers:2
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Gemini 2.0 Flash
Avg Score:41.3%(+8.8%)
Providers:1