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Claude Opus 4.1 vs GPT-4.5
Comprehensive side-by-side LLM comparison
Claude Opus 4.1 leads with 14.5% higher average benchmark score. Claude Opus 4.1 offers 99.9K more tokens in context window than GPT-4.5. Claude Opus 4.1 is $135.00 cheaper per million tokens. Claude Opus 4.1 is available on 4 providers. Overall, Claude Opus 4.1 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.1 represents an iteration within the Claude 4 Opus line, built to deliver refined performance in complex reasoning and analysis tasks. Developed as part of Anthropic's flagship tier, it incorporates improvements to the foundational capabilities that define the Opus family of models.
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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.
5 months newer
GPT-4.5
OpenAI
2025-02-27
Claude Opus 4.1
Anthropic
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.1
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 5 common benchmarks
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Claude Opus 4.1
Average Score:76.7%(+14.5%)
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GPT-4.5
Average Score:62.2%
Performance comparison across key benchmark categories
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Claude Opus 4.1
Coding74.5%(+36.5%)
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GPT-4.5
Coding38.0%
Provider Availability & Performance
Available providers and their performance metrics
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Claude Opus 4.1
4 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Opus 4.1
Avg Score:76.7%(+14.5%)
Providers:4
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GPT-4.5
Avg Score:62.2%
Providers:1