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Claude 3.5 Sonnet vs Claude Haiku 4.5
Comprehensive side-by-side LLM comparison
Claude Haiku 4.5 leads with 15.1% higher average benchmark score. Claude Haiku 4.5 is $12.00 cheaper per million tokens. Claude 3.5 Sonnet is available on 3 providers. Overall, Claude Haiku 4.5 is the stronger choice for coding tasks.
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Anthropic
This upgraded version of Claude 3.5 Sonnet was released with significant improvements in coding and agentic tool use. Built to deliver enhanced performance in software engineering tasks, it brought substantial gains in reasoning and problem-solving while introducing the groundbreaking computer use capability in public beta, allowing it to interact with computer interfaces like a human.
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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.
11 months newer
Claude 3.5 Sonnet
Anthropic
2024-10-22
Claude Haiku 4.5
Anthropic
2025-10-15
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Pricing Comparison
Cost per million tokens (USD)
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Claude 3.5 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 2 common benchmarks
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Claude 3.5 Sonnet
Average Score:58.1%
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Claude Haiku 4.5
Average Score:73.2%(+15.1%)
Performance comparison across key benchmark categories
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Claude 3.5 Sonnet
Coding49.0%
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Claude Haiku 4.5
Coding73.3%(+24.3%)
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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 3.5 Sonnet
3 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 101 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
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Claude 3.5 Sonnet
Avg Score:58.1%
Providers:3
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Claude Haiku 4.5
Avg Score:73.2%(+15.1%)
Providers:1