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Claude Haiku 4.5 vs GPT-5 nano
Comprehensive side-by-side LLM comparison
Claude Haiku 4.5 leads with 6.5% higher average benchmark score. GPT-5 nano offers 128.0K more tokens in context window than Claude Haiku 4.5. GPT-5 nano is $5.55 cheaper per million tokens. Overall, Claude Haiku 4.5 is the stronger choice for coding tasks.
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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.
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OpenAI
GPT-5 Nano was developed as the most compact variant in the GPT-5 family, designed for deployment in resource-constrained environments and edge computing scenarios. Built to bring next-generation AI capabilities to devices and applications where latency and efficiency are paramount, it distills GPT-5 innovations into a minimal footprint.
2 months newer
GPT-5 nano
OpenAI
2025-08-07
Claude Haiku 4.5
Anthropic
2025-10-15
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Pricing Comparison
Cost per million tokens (USD)
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Claude Haiku 4.5
Input:$1.00
Output:$5.00
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GPT-5 nano
Input:$0.05
Output:$0.40($5.55 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Claude Haiku 4.5
Average Score:84.7%(+6.5%)
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GPT-5 nano
Average Score:78.2%
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Knowledge Cutoff
Training data recency comparison
GPT-5 nano
2024-05-30
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 Haiku 4.5
1 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.3ms
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GPT-5 nano
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Claude Haiku 4.5
Avg Score:84.7%(+6.5%)
Providers:1
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GPT-5 nano
Avg Score:78.2%
Providers:2