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Claude Sonnet 4.5 vs GPT-4 Turbo
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 35.4% higher average benchmark score. Claude Sonnet 4.5 offers 131.9K more tokens in context window than GPT-4 Turbo. Claude Sonnet 4.5 is $22.00 cheaper per million tokens. Claude Sonnet 4.5 supports multimodal inputs. 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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OpenAI
GPT-4 Turbo was introduced as an optimized version of GPT-4, designed to provide enhanced performance with improved efficiency and an expanded context window. Built with updated knowledge and refined capabilities, it offered developers a more cost-effective way to leverage GPT-4's advanced reasoning while handling longer conversations and documents.
1 year newer
GPT-4 Turbo
OpenAI
2024-04-09
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($22.00 cheaper)
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GPT-4 Turbo
Input:$10.00
Output:$30.00
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Sonnet 4.5
Average Score:83.4%(+35.4%)
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GPT-4 Turbo
Average Score:48.0%
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Knowledge Cutoff
Training data recency comparison
GPT-4 Turbo
2023-12-31
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:83.4%(+35.4%)
Providers:2
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GPT-4 Turbo
Avg Score:48.0%
Providers:2