Perplexity Comet vs LangGraph
Which one should you pick? Here's the full breakdown.
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
LangGraph
LangChain's graph-based framework for building stateful, controllable multi-agent and human-in-the-loop AI workflows
| Category | Perplexity Comet | LangGraph |
|---|---|---|
| Ease of Use | 8.0 | 6.0 |
| Output Quality | 8.0 | 9.0 |
| Value | 9.5 | 8.5 |
| Features | 8.0 | 9.5 |
| Overall | 8.4 | 8.3 |
Pricing Comparison
| Feature | Perplexity Comet | LangGraph |
|---|---|---|
| Free Tier | Yes | Yes |
| Starting Price | $0 | $0 |
Which Should You Pick?
Pick Perplexity Comet if...
- ✓Easier to use (8 vs 6)
- ✓Better value for money (9.5/10)
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 CometPick LangGraph if...
- ✓Higher output quality (9 vs 8)
- ✓More features (9.5 vs 8)
Developers building complex, stateful, or human-in-the-loop agent workflows where the logic is genuinely a graph -- loops, branches, approvals, retries. Also the right pick for teams already on LangChain who want serious production tracing and evaluation.
Visit LangGraphOur Verdict
Perplexity Comet and LangGraph are extremely close overall. Your choice comes down to specific needs -- Perplexity Comet is better for 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, while LangGraph works best for developers building complex, stateful, or human-in-the-loop agent workflows where the logic is genuinely a graph -- loops, branches, approvals, retries.