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Claude 3 Sonnet vs GPT-4.5
Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 15.2% higher average benchmark score. Claude 3 Sonnet offers 267.9K more tokens in context window than GPT-4.5. Claude 3 Sonnet is $207.00 cheaper per million tokens. Claude 3 Sonnet is available on 3 providers. Overall, GPT-4.5 is the stronger choice for coding tasks.
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Anthropic
Claude 3 Sonnet was introduced as the balanced middle tier of the Claude 3 family, offering a combination of strong capabilities and operational speed. Designed to provide an optimal tradeoff between intelligence and performance for everyday tasks, it served as a versatile solution for a wide range of enterprise and consumer applications.
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OpenAI
GPT-4.5 was developed as an intermediate advancement between GPT-4 and GPT-5, designed to incorporate incremental improvements in reasoning, factuality, and instruction-following. Built to bridge generational capabilities while maintaining compatibility with existing applications, it represents a refinement of the GPT-4 architecture with enhanced performance characteristics.
12 months newer
Claude 3 Sonnet
Anthropic
2024-02-29
GPT-4.5
OpenAI
2025-02-27
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Pricing Comparison
Cost per million tokens (USD)
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Claude 3 Sonnet
Input:$3.00
Output:$15.00($207.00 cheaper)
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GPT-4.5
Input:$75.00
Output:$150.00
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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Claude 3 Sonnet
Average Score:71.2%
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GPT-4.5
Average Score:86.3%(+15.2%)
Provider Availability & Performance
Available providers and their performance metrics
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Claude 3 Sonnet
3 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
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Claude 3 Sonnet
Avg Score:71.2%
Providers:3
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GPT-4.5
Avg Score:86.3%(+15.2%)
Providers:1