DeepSeek vs Perplexity Comet
Which one should you pick? Here's the full breakdown.
DeepSeek
Near-frontier reasoning for pennies on the dollar -- the open-source LLM that made Silicon Valley nervous
Perplexity Comet
Perplexity's agentic AI browser -- FREE on all platforms as of 2026-03-18 (previously $200/mo Max-only). iOS, Android, Windows, Mac. Browses the web, executes multi-step tasks, and summarizes pages in-line. Comet Plus ($5/mo) adds premium publisher content
| Category | DeepSeek | Perplexity Comet |
|---|---|---|
| Ease of Use | 7.5 | 8.0 |
| Output Quality | 8.0 | 8.0 |
| Value | 9.5 | 9.5 |
| Features | 7.0 | 8.0 |
| Overall | 8.0 | 8.4 |
Pricing Comparison
| Feature | DeepSeek | Perplexity Comet |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Benchmark Head-to-Head
DeepSeek V3.2 benchmarks — Perplexity Comet has no published benchmarks
| Benchmark | Description | Score |
|---|---|---|
| MMLU | Knowledge across 57 subjects | 90.8% |
| MMLU-Pro | Harder multi-subject reasoning | 85% |
| GPQA Diamond | Graduate-level science questions | 79.9% |
| HumanEval | Python code generation | 91.5% |
| SWE-bench | Real GitHub issue fixing | 67.8% |
Which Should You Pick?
Pick DeepSeek if...
Developers and teams who need strong reasoning and coding capabilities on a budget. If you're building AI features and can't justify GPT-4 API costs, DeepSeek is the obvious first stop.
Visit DeepSeekPick Perplexity Comet if...
- ✓More features (8 vs 7)
Users who already use Perplexity for search and want an agent browser that can complete multi-step tasks (booking, research, shopping, document summarization) across tabs. Also a strong introduction to the AI-browser category for anyone curious but unwilling to pay $200/mo for a preview -- the 2026-03-18 free rollout makes evaluation risk-free.
Visit Perplexity CometOur Verdict
Perplexity Comet edges out DeepSeek with a 8.4 vs 8.0 overall score. Both are solid picks, but Perplexity Comet has the advantage in features.