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GPT-4.5 vs o3-pro
Comprehensive side-by-side LLM comparison
o3-pro offers 167.9K more tokens in context window than GPT-4.5. o3-pro is $125.00 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-4.5 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 63.1% across 27 benchmarks. It excels particularly in GSM8k (97.0%), MMLU (90.8%), CharXiv-D (90.0%). It supports a 132K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents OpenAI's latest advancement in AI technology.
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OpenAI
o3-pro is a multimodal language model developed by OpenAI. It supports a 300K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents OpenAI's latest advancement in AI technology.
3 months newer
GPT-4.5
OpenAI
2025-02-27
o3-pro
OpenAI
2025-06-10
Pricing Comparison
Cost per million tokens (USD)
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GPT-4.5
Input:$75.00
Output:$150.00
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o3-pro
Input:$20.00
Output:$80.00($125.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 27 common benchmarks
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GPT-4.5
Average Score:63.1%(+63.1%)
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o3-pro
Average Score:0.0%
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Knowledge Cutoff
Training data recency comparison
o3-pro
2024-05-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
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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o3-pro
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GPT-4.5
Avg Score:63.1%(+63.1%)
Providers:1
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o3-pro
Avg Score:0.0%
Providers:1