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GPT-4.5 vs GPT-4o
Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 10.9% higher average benchmark score. GPT-4o offers 12.3K more tokens in context window than GPT-4.5. GPT-4o is $212.50 cheaper per million tokens. Overall, GPT-4.5 is the stronger choice for coding tasks.
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OpenAI
GPT-4.5 was developed as an intermediate advancement between GPT-4 and GPT-5, designed to incorporate incremental improvements in reasoning, factuality, and instruction-following. Built to bridge generational capabilities while maintaining compatibility with existing applications, it represents a refinement of the GPT-4 architecture with enhanced performance characteristics.
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OpenAI
This updated version of GPT-4o was released with refinements to its multimodal capabilities and improved performance across text, vision, and audio tasks. Built to incorporate learnings from the initial GPT-4o deployment, it enhanced reliability and accuracy while maintaining the seamless cross-modal reasoning that defines the GPT-4o family.
6 months newer
GPT-4o
OpenAI
2024-08-06
GPT-4.5
OpenAI
2025-02-27
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Pricing Comparison
Cost per million tokens (USD)
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GPT-4.5
Input:$75.00
Output:$150.00
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GPT-4o
Input:$2.50
Output:$10.00($212.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 24 common benchmarks
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GPT-4.5
Average Score:61.5%(+10.9%)
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GPT-4o
Average Score:50.5%
Performance comparison across key benchmark categories
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GPT-4.5
Coding38.0%(+4.8%)
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GPT-4o
Coding33.2%
Provider Availability & Performance
Available providers and their performance metrics
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GPT-4.5
1 providers
OpenAI
Throughput: 50 tok/s
Latency: 20ms
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GPT-4o
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GPT-4.5
Avg Score:61.5%(+10.9%)
Providers:1
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GPT-4o
Avg Score:50.5%
Providers:2