GPT-4o vs Claude 3.5 Sonnet: Which AI Is Smarter? (2025)
GPT-4o vs Claude 3.5 Sonnet (2025)
The two most capable AI models head-to-head. OpenAI’s GPT-4o vs Anthropic’s Claude 3.5 Sonnet — which is actually better?
TL;DR: Claude 3.5 Sonnet wins on writing quality, coding, and long document analysis. GPT-4o wins on multimodal features (images, voice, tools). For raw intelligence: Claude edges ahead. For feature set: GPT-4o wins. Both are excellent — choose based on your use case.
Benchmark Comparison
| Test | GPT-4o | Claude 3.5 Sonnet | Winner |
|---|---|---|---|
| Writing Quality | 8/10 | 10/10 | Claude |
| Coding (SWE-bench) | 33% | 49% | Claude |
| Reasoning | 8/10 | 9/10 | Claude |
| Vision/Image | 9/10 | 8/10 | GPT-4o |
| Context Window | 128K | 200K | Claude |
| Speed | Fast | Fast | Tie |
| Features | 10/10 | 7/10 | GPT-4o |
Bottom Line
If you need the smartest AI for writing and coding: Claude 3.5 Sonnet. If you need the most versatile AI with images, voice, and tools: GPT-4o. If you can only pick one and do diverse tasks: GPT-4o. If quality matters most: Claude. (See also: Claude AI review)
Full comparison: ChatGPT vs Claude vs Gemini. Coding: For coding comparison. Subscriptions: Which $20 plan?. (See also: ChatGPT review) (See also: Gemini review)
Ready to get started?
Try Claude Free →Find the Perfect AI Tool for Your Needs
Compare pricing, features, and reviews of 50+ AI tools
Browse All AI Tools →Get Weekly AI Tool Updates
Join 1,000+ professionals. Free AI tools cheatsheet included.
🧭 What to Read Next
- 💵 Worth the $20? → $20 Plan Comparison
- 💻 For coding? → ChatGPT vs Claude for Coding
- 🏢 For business? → ChatGPT Business Guide
- 🆓 Want free? → Best Free AI Tools
🔥 AI Tool Deals This Week
Free credits, discounts, and invite codes updated daily
View Deals →
Free credits, discounts, and invite codes updated daily