DeepSeek
Westlaw
| Feature | DeepSeek | Westlaw |
|---|---|---|
| Pricing | Free / from $0.14/mo | Contact sales |
| Free Plan | ✓ Yes | ✗ No |
| Rating | 4.3 / 5 | 4.4 / 5 |
| Best For | developers, researchers, startups, cost-conscious-teams, ai-builders | law-firms, corporate-legal, judges, legal-researchers |
| Founded | 2023 | 1975 |
| Chat | ✓ | ✗ |
| Code Generation | ✓ | ✗ |
| Reasoning | ✓ | ✗ |
| Api | ✓ | ✗ |
| Open Weights | ✓ | ✗ |
| 1m Context | ✓ | ✗ |
| Tool Calls | ✓ | ✗ |
| Json Output | ✓ | ✗ |
| Case Law | ✗ | ✓ |
| Statutes | ✗ | ✓ |
| Keycite | ✗ | ✓ |
| Ai Research | ✗ | ✓ |
| Practice Specific Tools | ✗ | ✓ |
| Litigation Analytics | ✗ | ✓ |
✓ DeepSeek Pros
- Free web chat with no subscription required
- Extremely cheap API pricing (up to 50x cheaper than competitors)
- Strong reasoning and coding performance
- Open-weight models available for self-hosting
✗ DeepSeek Cons
- Data privacy concerns due to Chinese jurisdiction
- Less polished chat interface than ChatGPT or Claude
- Smaller plugin and integration ecosystem
- Content moderation on sensitive political topics
✓ Westlaw Pros
- Best KeyCite system
- Comprehensive database
- AI-powered research
- Reliable results
✗ Westlaw Cons
- Very expensive
- Interface learning curve
- Complex pricing
The Verdict
DeepSeek is built for developers and researchers, with a focus on chat and code-generation. Westlaw targets law firms and corporate legal and leads with case-law and statutes.
Westlaw uses custom enterprise pricing, while DeepSeek starts at $0.14/mo — a tangible advantage for teams with a fixed budget.
DeepSeek has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. Westlaw requires a paid subscription from day one.
Feature-wise, DeepSeek offers broader built-in capabilities (8 features vs 6), while Westlaw takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.