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GPT-4.5 vs o1
Comprehensive side-by-side LLM comparison
o1 leads with 3.5% higher average benchmark score. o1 offers 167.9K more tokens in context window than GPT-4.5. o1 is $150.00 cheaper per million tokens. GPT-4.5 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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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
o1 was developed as part of OpenAI's reasoning-focused model series, designed to spend more time thinking before responding. Built to excel at complex reasoning tasks in science, coding, and mathematics, it employs extended internal reasoning processes to solve harder problems than traditional language models through careful step-by-step analysis.
2 months newer
o1
OpenAI
2024-12-17
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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o1
Input:$15.00
Output:$60.00($150.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 12 common benchmarks
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GPT-4.5
Average Score:69.5%
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o1
Average Score:72.9%(+3.5%)
Performance comparison across key benchmark categories
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GPT-4.5
Coding38.0%
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o1
Coding41.0%(+3.0%)
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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o1
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GPT-4.5
Avg Score:69.5%
Providers:1
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o1
Avg Score:72.9%(+3.5%)
Providers:2