AI Tools · head to head
Perplexity vs Grok
Grok
AI Tools
Conversational AI assistant from xAI with multimodal capabilities and local model support
- From
- On request
- Rated
- -
The short version
- Only Perplexity has a free tier, so it costs nothing to try first.
- Each has a real cost: Perplexity context window has been stealthily reduced despite prior claims of 1-million-token capacity; Grok pricing is not published; all access requires sales contact or account negotiation
Where they differ
Only the attributes on which Perplexity and Grok actually diverge.
| Attribute | Perplexity | Grok |
|---|---|---|
| Starting price | Free | On request |
| Pricing model | Unknown | quote |
| Free tier | Yes | No |
| Platforms | Web, iOS, Android, Comet (AI browser) | Web, X integration, API (Python SDK) |
| Founded | 2022 | Unknown |
Identical on both: user rating (Not yet rated), category (AI Tools).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Perplexity
- Real-time web search
- Source citations
- Follow-up questions
- File analysis
- Browser extension
- API access
- Mobile apps
- Web support
Only in Grok
Nothing recorded that Perplexity does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Perplexity
- ai tools managementnot Grok
- Workflow automationnot Grok
- Reportingnot Grok
Grok
- Social media context-aware conversational AI via X integrationnot Perplexity
- Image and video understanding through APInot Perplexity
- Reasoning tasks with configurable compute budgetsnot Perplexity
- Autonomous tool use and web search integrationnot Perplexity
- Open-weight model deployment of Grok-1 architecturenot Perplexity
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Perplexity
- Context window has been stealthily reduced despite prior claims of 1-million-token capacity
- Citations sometimes point to irrelevant or overly general articles that do not support the stated claims
- Weak performance on complex multi-step reasoning and deep logic compared to dedicated reasoning LLMs
- Web crawler ignores robots.txt directives and scrapes content from sites that explicitly opted out
- Pro subscription quotas and feature access quietly reduced without user notification
Grok
- Pricing is not published; all access requires sales contact or account negotiation
- Main website (grok.com) is inaccessible (402 Payment Required); user must route through X platform or API
- Limited ecosystem compared to OpenAI and Anthropic; fewer third-party integrations
- Organisational reputation tied to Elon Musk; policy or direction changes may affect service continuity
Pricing, plan by plan
Perplexity
Free- FreeFree
- Unlimited basic searches
- 3 Pro Searches per day
- 1 Research query per month
- Pro$20/month
- Unlimited Pro Searches
- Advanced AI models
- All free features
- Pro Annual$200/year
- Unlimited Pro Searches
- Advanced AI models
- All free features
- Max$200/month
- Unlimited Pro Searches
- Labs multi-agent orchestration
- Perplexity Computer with 19 AI sub-agents
Grok
On requestNo published plan breakdown. See the Grok review.
Which should you pick?
Choose Perplexity if
- You need real-time web search.
- You want to start without paying.
- You work on Web, iOS, Android, Comet (AI browser).
- You also want source citations.
Questions people ask
- Is Perplexity or Grok better?
- Neither clearly leads. Perplexity starts at Free and Grok at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Perplexity or Grok?
- Perplexity has a free tier; the other does not. Paid plans start at Free for Perplexity and On request for Grok.
- Does Perplexity or Grok run on more platforms?
- Perplexity runs on Web, iOS, Android, Comet (AI browser). Grok runs on Web, X integration, API (Python SDK).
- Can I use Perplexity for free?
- Yes. Perplexity has a free tier, so you can try it without paying. Grok starts at On request.
- What is Perplexity best used for?
- Perplexity is most often used for ai tools management, workflow automation, reporting. Of those, ai tools management and workflow automation are not what Grok is typically brought in for.
- What can Perplexity do that Grok cannot?
- Perplexity covers Real-time web search, Source citations, Follow-up questions, File analysis.
Answered from the vendors’ own pages
Perplexity: Is Perplexity completely free?
Perplexity has a free tier with unlimited basic searches and 3 Pro Searches per day. Pro ($20/month or $200/year) and Max ($200/month) tiers unlock more advanced features like multi-model access and unrestricted queries.
SourcePerplexity: What is the difference between Pro and Max?
Pro provides access to advanced AI models like GPT-5.2, Claude Sonnet 4.5, and Gemini 3 Pro. Max adds Labs for multi-agent orchestration, Perplexity Computer with 19 specialized AI sub-agents, and 10,000 Computer credits per month.
SourcePerplexity: Can I use Perplexity offline?
No. Perplexity requires an active internet connection for all searches. The full answer service is not available offline.
SourcePerplexity: What platforms does Perplexity support?
Perplexity is available as a web application, iOS app, Android app, and as Comet, a dedicated AI browser for mobile (Android available, iOS in development).
SourcePerplexity: How reliable are Perplexity's citations?
Citations are a key feature of Perplexity, but users report that citations sometimes point to irrelevant or overly general articles that don't directly support the claims made.
SourcePerplexity: Does Perplexity's context window match the advertised 1 million tokens?
Perplexity had promoted a 1-million-token context window, but users have reported stealth reductions in the actual context capacity without public announcement.
Source