Anthropic Claude Haiku 4.5 VS Anthropic Claude Sonnet 5
Decision Recommendation
⚖️ Editorial Verdict: In our analysis, Claude Haiku 4.5 is the premium intelligence choice, scoring 23.7% higher on coding benchmarks. It also maintains strong cost efficiency. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Claude Sonnet 5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of Claude Haiku 4.5 fully justifies the cost.
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Model Specs
Claude Haiku 4.5
Benchmarks & Scores
Coding (swe-bench-pro)
39.5%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
73%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)2.0x cheaper
$2.00Input: $1.00 | Output: $5.00Context Window
200k tokensModel Specs
Claude Sonnet 5
Benchmarks & Scores
Coding (swe-bench-pro)Winner (+23.7%)
63.2%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
N/Agraduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$4.00Input: $2.00 | Output: $10.00Context WindowLarger
1.05M tokensFrequently Asked Questions about Claude Haiku 4.5 vs Claude Sonnet 5 comparison
Claude Haiku 4.5 is cheaper than Claude Sonnet 5. Claude Haiku 4.5 has a blended cost of $2.00/1M tokens, which is about 2.0x cheaper than Claude Sonnet 5 at $4.00/1M tokens.
Claude Sonnet 5 is better for coding tasks on this benchmark. It scores 63.2% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases) compared to Claude Haiku 4.5 which scores 39.5%.
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