GPT-5 vs Claude Sonnet 4.5: Which Model Should You Use?
A detailed comparison of the two leading AI models, including performance benchmarks, use cases, and recommendations.
GPT-5 vs Claude Sonnet 4.5: Which Model Should You Use?
With both GPT-5 and Claude Sonnet 4.5 now available, developers and businesses face an important choice. Let's break down the differences.
Performance Comparison
Creative Writing
Winner: GPT-5 GPT-5 excels at creative tasks, generating more natural-sounding prose and maintaining consistent character voices in long-form content.
Code Generation
Winner: Tie Both models are excellent at coding, but they have different strengths:
- GPT-5: Better at explaining code and debugging
- Claude: More precise with complex algorithms
Analysis and Reasoning
Winner: Claude Sonnet 4.5 Claude's constitutional AI training makes it exceptional at logical reasoning and analytical tasks.
Cost Considerations
On PromptModal's credit system:
- GPT-5: 10 credits per test
- Claude Sonnet 4.5: 8 credits per test
Claude offers better value for high-volume testing.
Best Use Cases
Choose GPT-5 for:
- Creative content generation
- Marketing copy
- Storytelling
- Code explanation and documentation
Choose Claude Sonnet 4.5 for:
- Data analysis
- Legal document review
- Complex reasoning tasks
- Technical writing
The Best of Both Worlds
Why choose? With PromptModal, you can test the same prompt on both models simultaneously and compare results side-by-side.
Conclusion
There's no definitive winner. Each model excels in different areas. The best approach is to test your specific use case on both platforms.