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Claude 3 Sonnet vs Claude Haiku 4.5
Comprehensive side-by-side LLM comparison
Claude Haiku 4.5 leads with 32.6% higher average benchmark score. Claude Haiku 4.5 is $12.00 cheaper per million tokens. Claude 3 Sonnet is available on 3 providers. Overall, Claude Haiku 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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Anthropic
Claude Haiku 4.5 continues Anthropic's tradition of fast, efficient models in the fourth generation Claude family. Designed to maintain the hallmark speed and cost-effectiveness of the Haiku line while incorporating advancements from the Claude 4 series, it serves applications requiring rapid processing and quick turnaround times.
1 year newer
Claude 3 Sonnet
Anthropic
2024-02-29
Claude Haiku 4.5
Anthropic
2025-10-15
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Pricing Comparison
Cost per million tokens (USD)
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Claude 3 Sonnet
Input:$3.00
Output:$15.00
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Claude Haiku 4.5
Input:$1.00
Output:$5.00($12.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude 3 Sonnet
Average Score:40.4%
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Claude Haiku 4.5
Average Score:73.0%(+32.6%)
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Knowledge Cutoff
Training data recency comparison
Claude Haiku 4.5
2025-02-01
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 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:40.4%
Providers:3
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Claude Haiku 4.5
Avg Score:73.0%(+32.6%)
Providers:1