Comparison
Claude vs DeepSeek
Claude: Anthropic's AI assistant, a benchmark for writing and coding. DeepSeek: Free, unlimited AI chatbot with very capable open-weight models.
| Claude | DeepSeek | |
|---|---|---|
| Rating | 4.7 | 4.4 |
| Price | Freemium Pro plan from €18/month. Free plan available. | Free Free, unlimited chat. Pay-as-you-go API from $0.14 per million tokens. |
| Free plan | ||
| API available | ||
| Open source | ||
| In Spanish | ||
| No watermark | — | — |
| Platforms | Web · Windows · Mac · iOS · Android | Web · iOS · Android |
Claude or DeepSeek?
Both stand out at coding and reasoning, but from opposite directions. Claude is the commercial benchmark: very natural writing, long context and Claude Code for working across whole repositories. DeepSeek reaches a similar level on code while being free and unlimited in its chat, with open-weight models you can run yourself.
Choose Claude if…
You work with long documents, care about writing quality, or want an agent that codes across your repository.
Choose DeepSeek if…
You do not want a subscription, or you need open models you can audit and run on your own infrastructure.
Claude
- Very natural writing, in Spanish too
- Excellent for coding (Claude Code)
- Handles very long documents
- Stricter usage limits than ChatGPT on the free plan
- No image generation
DeepSeek
- Completely free chat, with no daily limits or paywalled features
- Open-weight models you can run or audit yourself
- Extremely cheap API (~10x less than equivalent competitors)
- 'Server busy' notices at peak times
- Chinese company: its data policy raises concerns in corporate settings
The differences that actually matter
Paying for guarantees or paying nothing
In reasoning and coding they are closer than the price gap suggests. What you buy with Claude is enterprise context: servers in specific regions, a data processing agreement, a clear training policy and support. DeepSeek offers none of that framework, and for personal use it does not matter at all.
Writing is where they diverge most
For long-form writing in Spanish, Claude produces noticeably more natural prose: it holds tone, avoids repetition and sounds less translated. DeepSeek writes correctly but with more visible structure and turns of phrase that give away the origin. If you are publishing the output, that is the difference that saves or adds the most work.
You can run DeepSeek yourself
DeepSeek's models are published with open weights, so you can download and run them on your own infrastructure. That settles the question of where your data ends up in one move, at the cost of needing serious hardware and someone to maintain it. Claude only runs as a service.
Frequently asked questions
Which codes better, Claude or DeepSeek?
In the quality of the generated code they are close. The practical difference is around it: Claude Code works on the whole repository from the terminal, reads several files and runs commands, and that workflow has no direct equivalent in DeepSeek. For writing individual functions both do the job; for delegating multi-file tasks they are not in the same league.
Is Claude worth paying for when DeepSeek is free?
If you write in Spanish for publication, or work with data that cannot leave the EU, yes: those are the two things DeepSeek does not cover. If you use it for personal queries, casual coding or learning, DeepSeek gives you an equivalent result at no cost.