AI model comparisons
DeepSeek V4 Pro 0813 vs Claude Sonnet 5.5
DeepSeek V4 Pro 0813 from DeepSeek and Claude Sonnet 5.5 from Anthropic, side by side. Check the specs, then run your own prompt on both.
| Specs | DeepSeek V4 Pro 0813 | Claude Sonnet 5.5 |
|---|---|---|
| Provider | DeepSeek | Anthropic |
| Minimum plan | Free | Free |
| Context window | 1.05M tokens | 1M tokens |
| Reasoning | Yes | Yes |
| Web search | Yes | Yes |
About DeepSeek V4 Pro 0813
DeepSeek V4 Pro is the flagship for coding and hard reasoning. Supports web search.
About Claude Sonnet 5.5
Claude Sonnet 5.5 is fast and capable for everyday coding, agentic tasks, and professional work. Supports reasoning and web search.
Run the same prompt on both
Open both models in Split view with one prompt, or chat with each one separately.
Step through a tough problem
Work through this carefully, show your reasoning, and state your confidence at the end:
Compare side by sideFind the flaw
Here is an argument. Find weak points, hidden assumptions, and a stronger alternative:
Compare side by sideFAQ
DeepSeek V4 Pro 0813 vs Claude Sonnet 5.5 FAQ
DeepSeek V4 Pro 0813 vs Claude Sonnet 5.5
Start for free, switch models instantly, upgrade only when you need more.