+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Claude Opus 4 vs GPT-4.5
Comprehensive side-by-side LLM comparison
Claude Opus 4 leads with 14.2% higher average benchmark score. Claude Opus 4 offers 195.9K more tokens in context window than GPT-4.5. Claude Opus 4 is $135.00 cheaper per million tokens. Claude Opus 4 is available on 4 providers. Overall, Claude Opus 4 is the stronger choice for coding tasks.
+
+
+
+
Anthropic
Claude Opus 4 was developed as the flagship model in the Claude 4 generation, designed to push the boundaries of AI capability in complex reasoning, analysis, and multi-step problem-solving. Built to handle the most demanding enterprise tasks, it represents Anthropic's highest tier of intelligence and capability.
+
+
+
+
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.
2 months newer
GPT-4.5
OpenAI
2025-02-27
Claude Opus 4
Anthropic
2025-05-22
+
+
+
+
+
+
+
+
+
+
+
+
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Claude Opus 4
Input:$15.00
Output:$75.00($135.00 cheaper)
+
+
+
+
GPT-4.5
Input:$75.00
Output:$150.00
Performance Metrics
Context window and performance specifications
Average performance across 5 common benchmarks
+
+
+
+
Claude Opus 4
Average Score:76.4%(+14.2%)
+
+
+
+
GPT-4.5
Average Score:62.2%
Performance comparison across key benchmark categories
+
+
+
+
Claude Opus 4
Coding72.5%(+34.5%)
+
+
+
+
GPT-4.5
Coding38.0%
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Claude Opus 4
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
+
+
+
+
Claude Opus 4
Avg Score:76.4%(+14.2%)
Providers:4
+
+
+
+
GPT-4.5
Avg Score:62.2%
Providers:1