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Side-by-side comparison · AI Assistants & LLMs

DeepSeek vs Google Gemini vs Perplexity

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

DeepSeek

3.8

From Pay per use

Google Gemini

4.2

From US$4.99/mo

Perplexity

4.2

From $17/mo

Comparing 3 tools, the maximum.

At a glance

Best value

Pick it if: Anyone who wants a strong reasoning assistant for free, and developers watching their API costs.

Pick it if: People whose work already runs on Gmail, Google Workspace or an Android phone.

Easiest to use

Pick it if: Anyone who researches as part of their job and is sick of having ten tabs open.

Overview

AttributeDeepSeekGoogle GeminiPerplexity
In one lineA free Chinese assistant that's strong at maths, logic and code.Google's assistant, built into Gmail, Docs, Drive and Android phones.Ask a question and get a short answer from the web, with links to every source.
Pricing modelFreeFreemiumFreemium
Starting pricePay per useUS$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.

AttributeDeepSeekGoogle GeminiPerplexity
Overall rating3.84.24.2
Ease of useHow quickly someone non-technical gets value from it.
3.5
4.0
4.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
3.0
4.5
3.5
Output qualityHow good the results are before you fix them.
4.0
4.0
4.5
Value for moneyWhat you get for the price, including the free plan.
5.0
4.0
4.0
Speed & reliabilityHow fast it is and how often it falls over.
3.5
4.5
4.5

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeDeepSeekGoogle GeminiPerplexity
Access & platform
Free plan Yes Yes Yes
Mobile app Yes Yes Yes
Desktop app No Yes Yes
Browser extension No Yes Yes
API access Yes Yes Yes
Teams & business
Team workspace No Yes Yes
Enterprise plan or SSO No Yes Yes
Connects to other apps No Yes Yes
Open source or self-hosted Yes No No
AI abilities
Works with your files Yes Yes Yes
Understands images Yes Yes Yes
Makes images No Yes Yes
Makes video No Yes Yes
Writes code Yes Yes Yes
Runs agents or automations No Yes Yes
Learns your brand or style No Yes No
Works in many languages Yes Yes Yes
Capabilities score8/ 1716/ 1715/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeDeepSeekGoogle GeminiPerplexity
Plans

Chat appOur pick

Free

Anyone who wants a capable reasoning assistant at no cost.

Free

Free

Light use and seeing how it feels.

Free

Free

Everyday questions and quick fact-checks.

API (deepseek-flash)

Pay per use, from $0.15 per million input tokens

Developers building cheap features into their own apps.

Google AI Plus

US$4.99/mo

Casual users who want Gemini in Gmail and more storage.

ProOur pick

$17/mo billed yearly

Anyone who researches as part of their job.

API (deepseek-v4-pro)

Pay per use, from $0.66 per million input tokens

Developers who want the stronger model.

Google AI ProOur pick

US$19.99/mo

Anyone who works in Google Workspace every day.

Max

$167/mo billed yearly

Power users running the Computer agent all day.

Google AI Ultra

From US$99.99/mo

Heavy creative and agent users.

Enterprise Pro

$34/seat/mo billed yearly

Teams that need admin controls and data protection.

Enterprise Max

$271/seat/mo billed yearly

Research teams working with large datasets and files.

Which plan to pickThe app is free, so the only decision is whether the privacy trade-off is acceptable for what you're asking. If you need the model inside your own software, have a developer use the API or run the open model through a provider that keeps your data in Australia.Skip the free plan for anything serious now that it's Flash-Lite only. AI Pro (US$19.99, or A$32.99 in Australia) is the one to buy: it's the cheapest way to get Gemini 4 Argon plus Gemini in Docs and Gmail, and the 5 TB of storage offsets a Google One bill. Ultra is for people generating video all day.Start free and see how often you hit the Pro search limit. If you research most days, Pro pays for itself in saved tabs. Its 4,000 bonus Computer credits are a one-off and run out after about 30 days, so don't count them as a monthly allowance. Max only makes sense if you're using the Computer agent heavily enough to burn through the credits.

Key features

AttributeDeepSeekGoogle GeminiPerplexity
Standout features
  • Step-by-step reasoning
  • Free app
  • Open models
  • Cheap API
  • Code help
  • Gemini in Gmail, Docs and Drive
  • Deep Research
  • Image and video making
  • Gemini Live and desktop apps
  • Tasks and connected apps
  • Gemini in Chrome
  • Cited answers
  • Deep research
  • Comet browser
  • Computer
  • Spaces
  • Choice of models

Pros and cons

AttributeDeepSeekGoogle GeminiPerplexity
Pros
  • Free app with no paid tier, and strong at reasoning and code
  • API costs a fraction of the big US labs
  • Models are open, so you can run them where your data rules allow
  • Shows its reasoning so mistakes are easier to catch
  • Reads and acts on your Gmail, Docs and Drive directly
  • AI Pro bundles the top model, Workspace features and 5 TB of storage for one price
  • Deep Research is included even on the free plan
  • Fast, and the mobile and Android experience is polished
  • Video and image generation included on paid plans
  • Desktop apps for Windows and Mac as well as the web
  • Sources on every answer make it the easiest assistant to fact-check
  • Short, direct answers instead of padded essays
  • Free plan is useful on its own and Comet is free
  • Lets you pick from the best models from several companies
  • Fast, and the mobile app is good
Cons
  • Data goes to China and it's banned on Australian government devices
  • No image or video generation and almost no integrations
  • Service slows or drops out when demand spikes
  • Avoids or slants topics sensitive to the Chinese government
  • Writing quality is behind Claude and ChatGPT
  • Free plan is now Flash-Lite only, so it's weaker than the free tiers of ChatGPT or Claude
  • Plan names and model access keep changing, which is confusing
  • Writing quality sits behind Claude and the answers can be padded
  • Workspace features need a personal Google account or a Workspace admin to turn them on
  • Usage resets every 5 hours up to a weekly cap, and Google doesn't publish the numbers
  • Weak for long writing, planning or creative work
  • Computer credits are confusing: Pro's bonus credits expire after about 30 days, and Comet's browser actions and Automations spend them
  • Sources are sometimes low quality, so you still need to read them
  • Max is expensive for what most businesses need

Who each one is for

AttributeDeepSeekGoogle GeminiPerplexity
Best for
  • Maths, logic and step-by-step problems
  • Coding help
  • A capable free assistant
  • Cheap API access for your own apps
  • Searching and summarising your Gmail
  • Drafting in Google Docs
  • Image and video generation on paid plans
  • Hands-free help on Android
  • Fact-checking and quick research
  • Competitor and market research
  • Comparing products before you buy
  • Getting up to speed on a new topic
You'll find it used by
  • Developers
  • Students
  • Analysts
  • Budget-conscious founders
  • Google Workspace teams
  • Marketers
  • Small business owners
  • Android users
  • Researchers
  • Marketers
  • Consultants
  • Founders

Questions people ask

Which is better, DeepSeek, Google Gemini or Perplexity?

They tie on our overall rating (DeepSeek 3.8/5, Google Gemini 4.2/5 and Perplexity 4.2/5). DeepSeek is best for Maths, logic and step-by-step problems and coding help. Google Gemini is best for searching and summarising your Gmail and drafting in Google Docs. Perplexity is best for fact-checking and quick research and competitor and market research.

Which is cheaper, DeepSeek, Google Gemini or Perplexity?

DeepSeek: There's a free plan, and paid plans start at Pay per use. Google Gemini: There's a free plan, and paid plans start at US$4.99/mo. Perplexity: There's a free plan, and paid plans start at $17/mo.

Which is easier to use, DeepSeek, Google Gemini or Perplexity?

Perplexity rates highest for ease of use in our scores. Anyone who researches as part of their job and is sick of having ten tabs open.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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