Side-by-side comparison · Research & Search
ChatGPT Deep Research vs Gemini Deep Research vs Perplexity (Research)
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
ChatGPT Deep Research
3.8Pick it if: ChatGPT users who want a proper write-up on a question and are happy to wait a few minutes for it.
Gemini Deep Research
4.0Pick it if: Anyone who needs a thorough written briefing on a topic and would rather edit than research.
Perplexity (Research)
4.6Pick it if: Anyone who would otherwise spend an afternoon reading tabs to answer one question.
Overview
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
|---|---|---|---|
| In one line | ChatGPT's research mode, which browses for you and writes up a cited report. | Google's agent that browses for minutes and writes a long, sourced report. | Runs dozens of searches on a question and hands back a cited report in minutes. |
| Pricing model | Freemium | Freemium | Freemium |
| Starting price | $8/mo | $4.99/mo | $17/mo |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | No | No | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
|---|---|---|---|
| Overall rating | 3.8 | 4.0 | 4.6Winner |
| Ease of useHow quickly someone non-technical gets value from it. | 4.0 | 4.0 | 4.5 |
| FeaturesHow much it can do, and how well the pieces fit together. | 4.0 | 4.0 | 4.5 |
| Output qualityHow good the results are before you fix them. | 4.5 | 4.0 | 4.5 |
| Value for moneyWhat you get for the price, including the free plan. | 3.5 | 4.5 | 4.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 3.0 | 3.5 | 5.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | Yes | Yes |
| Desktop app | Yes | No | Yes |
| Browser extension | Yes | Yes | Yes |
| API access | Yes | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | Yes | Yes | Yes |
| Makes images | Yes | Yes | Yes |
| Makes video | Yes | Yes | Yes |
| Writes code | Yes | Yes | Yes |
| Runs agents or automations | Yes | Yes | Yes |
| Learns your brand or style | Yes | No | No |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 16/ 17 | 14/ 17 | 15/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
|---|---|---|---|
| Plans | Free Free Seeing what a report looks like. | Free Free The occasional big question. | Free Free Quick sourced answers and a taste of research mode. |
Go $8/mo Casual users who want more chat, not more research. | Google AI Plus $4.99/mo Light users who want a bit more headroom. | ProOur pick $17/mo billed yearly Anyone who researches most days. | |
PlusOur pick $20/mo Anyone who wants deep research weekly. | Google AI ProOur pick $19.99/mo Anyone who runs a few reports a week or also uses NotebookLM. | Max $200/mo, or $167/mo billed yearly Heavy users who also want the Computer agent and the newest models first. | |
Pro From $100/mo Heavy users who run research daily. | Google AI Ultra From $99.99/mo Power users who want the highest limits across all of Google AI. | Enterprise Pro From $40/seat/mo Teams that need admin controls and shared billing. | |
| Which plan to pick | If you have Plus already, you are set; its deep research allowance covers most people. Do not buy ChatGPT just for research unless you also want the rest of it, because Perplexity Pro costs less and is faster. Pro is only worth it if you run reports every day. | Try the free plan first; it is enough to see the style of report you get. If you want it weekly, Google AI Pro is the pick because the Pro model writes better reports and the same subscription upgrades NotebookLM and Gemini in Gmail and Docs. | Pro is the one. The free plan is too tight to judge research mode properly, and Max only makes sense if you want the Computer agent or you hit Pro limits every day. Businesses with a few people on it should look at Enterprise Pro for the admin controls. |
Key features
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
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Pros and cons
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
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Who each one is for
| Attribute | ChatGPT Deep Research | Gemini Deep Research | Perplexity (Research) |
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How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability. The "Visit" buttons may use affiliate links, which never affect a score.
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