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Claude 3 Opus vs GPT-4.5
Comprehensive side-by-side LLM comparison
GPT-4.5 leads with 7.1% higher average benchmark score. Claude 3 Opus offers 267.9K more tokens in context window than GPT-4.5. Claude 3 Opus is $135.00 cheaper per million tokens. Claude 3 Opus is available on 3 providers. Overall, GPT-4.5 is the stronger choice for coding tasks.
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Anthropic
Claude 3 Opus was developed as the most capable model in the Claude 3 family, designed to set new industry benchmarks across a wide range of cognitive tasks. Built to handle complex analysis and extended tasks requiring deep reasoning, it balanced frontier intelligence with careful safety considerations, representing the flagship tier of the Claude 3 generation.
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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.
12 months newer
Claude 3 Opus
Anthropic
2024-02-29
GPT-4.5
OpenAI
2025-02-27
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Pricing Comparison
Cost per million tokens (USD)
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Claude 3 Opus
Input:$15.00
Output:$75.00($135.00 cheaper)
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GPT-4.5
Input:$75.00
Output:$150.00
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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Claude 3 Opus
Average Score:79.3%
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GPT-4.5
Average Score:86.3%(+7.1%)
Provider Availability & Performance
Available providers and their performance metrics
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Claude 3 Opus
3 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
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Claude 3 Opus
Avg Score:79.3%
Providers:3
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GPT-4.5
Avg Score:86.3%(+7.1%)
Providers:1