Best AI for Research: ChatGPT vs Claude vs Gemini vs Perplexity
Side-by-Side Comparison
How Perplexity, Gemini, ChatGPT, Claude compare across the features that matter most.
| Feature | Perplexity | Gemini | ChatGPT | Claude |
|---|---|---|---|---|
| Price | $20/mo (Pro) | $20/mo (Pro) | $20/mo (Plus) | $20/mo (Pro) |
| Free plan | Yes | Yes | Yes | Yes |
| Paid plan | $20/mo | $20/mo | $20-200/mo | $20-100+/mo |
| Reasoning | Very good | Excellent | Excellent | Best-in-class |
| Coding | Good | Excellent | Excellent | Best-in-class |
| Writing | Good | Very good | Excellent | Best-in-class |
| Research | Best-in-class | Excellent | Very good | Very good |
| Image generation | Yes | Yes (Imagen) | Yes (built-in) | No |
| Video | No | Yes (Veo) | Yes (Sora) | No |
| Web search | Best-in-class (cited) | Yes (native) | Yes | Yes |
| Context | Model-dependent | 2M tokens | 400K tokens | 500K tokens |
| Integrations | Spaces, API | Google Workspace | Extensive (GPTs, API) | Good (MCP, API) |
| Mobile app | Yes | Yes | Yes | Yes |
| Desktop app | Yes | Web | Yes | Yes |
| Privacy | Good | Good | Good (opt-out) | Excellent (no training by default) |
| Ease of use | Excellent | Very good | Excellent | Excellent |
| Best for | Search & sourced research | Research & Google ecosystem | All-round everyday AI | Coding & long-form writing |
KLYROO Test
Our comparison philosophy is to evaluate tools with consistent tasks and realistic workflows across categories such as writing, coding, research, reasoning, image generation, summarization and data analysis. Where we have not run a controlled head-to-head, we label the assessment clearly: this comparison is an editorial evaluation based on documented features and available evidence. We never invent benchmark numbers.
Which One Should You Choose?
- Choose Perplexity if that priority (overall) matters most to you.
- Choose Gemini if that priority (deep research) matters most to you.
- Choose Claude if that priority (reasoning) matters most to you.
- Choose Perplexity if that priority (value) matters most to you.
Frequently Asked Questions
Tools in This Comparison
Claude
Anthropic's thoughtful assistant praised for long-context reasoning and safe, natural writing.
ChatGPT
The world's most popular AI assistant for writing, reasoning, coding and research.
Gemini
Google's multimodal AI, deeply tied into Search, Workspace and Android.
Perplexity
An answer engine that combines web search with LLMs and cites every source.