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It's a split decision.
Choose Merlin AI for a browser-based assistant with multiple models, file and video summaries, and content tools. Choose Perplexity for cited web research, deep research, and Pro access to 400+ app connectors. According to the pricing pages, solo Pro costs $19 per month annually for Merlin and $17 for Perplexity. Merlin Teams lists $15 per seat monthly with annual billing, but requires at least two seats. Both offer free plans; Merlin lists 102 daily queries, while Perplexity describes usage as limited.
01Side by side
| Merlin AI | Perplexity | |
|---|---|---|
| Starting paid price | Pro: $19/month annually; $29 monthly | Pro: $17/month annually; $20 monthly |
| Free plan | 102 queries daily; 1 image generation daily | Limited daily usage; cited answers |
| Best for | Browser-based AI assistance, files, videos, and content | Cited web research and synthesized answers |
| Core strength | Multiple models and tools for creation, code, and diagrams | Cited search, deep research, and source-focused modes |
| Learning curve | Review ease-of-use score: 7/10 | Review ease-of-use score: 8/10 |
| Integrations and data | File uploads; 5 GB vault storage on Pro | 400+ app connectors on Pro |
| Team and seat costs | Teams: $15/seat monthly annually; minimum two seats | Enterprise Pro: $34/seat monthly annually |
| Support | Review support score: 5/10 | Review support score: 5/10 |
Merlin AI Choose Merlin AI if
- Choose Merlin AI if you want multiple models in a browser assistant.
- Choose Merlin AI if file and YouTube video summaries matter.
- Choose Merlin AI if you need a lower-priced Teams seat.
Perplexity Choose Perplexity if
- Choose Perplexity if cited answers are central to your research.
- Choose Perplexity if you want 400+ app connectors on Pro.
- Choose Perplexity if you want a lower-priced solo Pro plan annually.
02Pricing compared
Merlin is cheaper on annual Pro pricing: its pricing page lists $19 per month billed annually, versus $17 for Perplexity Pro. On monthly billing, Merlin Pro is $29 and Perplexity Pro is $20, so Perplexity costs less month to month. Merlin Teams lists $15 per seat per month annually, with a two-seat minimum; Perplexity Enterprise Pro is $34 per seat monthly when billed annually. Perplexity also has a $167-per-month annual Max plan, while Merlin Enterprise pricing is custom.
Both have free plans, but their limits are stated differently. Merlin lists 102 queries per day, one image generation per day, and 100 MB of vault storage. Perplexity describes daily use as limited and does not publish a number here. Neither product lists a free trial.
03Features and depth
Merlin is the broader assistant for everyday tasks. Its listed features include access to models from OpenAI, Claude, Gemini, DeepSeek, Mistral, Llama, and Grok; web answers; document chat; YouTube summaries and transcripts; content drafting; and diagram and code generation. Pro lists 5,000 GPT standard messages and 1,000 GPT High Reasoning messages per month, plus 2,500 image generations. Those quotas are specific to the plan listing, so check how usage works for the models you expect to use.
Perplexity is more focused on cited research. It generates answers with inline citations and offers Pro Search and Deep Research, source modes for Web, Academic, News, YouTube, and Reddit, and project Spaces. Pro adds model selection and 400+ app connectors. Merlin supports web search and summaries, but the published feature details do not list comparable source-specific modes or connectors. Choose Merlin for a mix of assistant tasks; choose Perplexity when cited answers and research workflows matter more.
04Ease of use and learning curve
Merlin offers a web app and browser extension, which puts its assistant alongside browsing and lets users work with pages, videos, and uploaded files. Its many models and tools give users more options to sort through, and the plan's usage quotas are worth checking before relying on it heavily.
Perplexity is organized around asking questions and getting cited answers. Its focus modes and research features offer ways to narrow a search, while Spaces can group threads and files into projects. Free users get basic models without model selection, according to the plan details; model choice is a Pro feature. For a simple starting point, either free plan lets you try the core product, but Perplexity does not state a numeric daily limit in the published pricing details.
Questions people ask
Which is cheaper, Merlin or Perplexity?
For individual Pro plans, Perplexity is cheaper on both listed billing options: $20 per month monthly or $17 per month billed annually, compared with Merlin at $29 monthly or $19 annually. Merlin Teams is $15 per seat monthly with annual billing, but requires at least two seats.
Can I use Merlin and Perplexity for free?
Yes. Both list a free plan, and neither lists a separate free trial. Merlin specifies 102 queries per day, one image generation per day, and 100 MB of storage. Perplexity describes free usage as limited but does not give a daily query count in the published pricing details.
Which is better for research?
Perplexity is the clearer fit for cited web research: its answers include inline citations, and it offers Deep Research and source modes such as Academic, News, YouTube, and Reddit. Merlin can answer web questions and summarize supported sites, but its published feature list does not specify equivalent research modes.
Does Merlin include more than one AI model?
Yes. Merlin lists access to models including OpenAI, Claude, Gemini, DeepSeek, Mistral, Llama, and Grok. Perplexity also offers model selection on paid plans, including Sonar, GPT, Claude, and Gemini. Perplexity's free plan includes basic models only and does not include model selection.