How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- This article covers third-party apps built on or around ChatGPT and GPT models, not OpenAI itself, with pricing from the app vendors rather than OpenAI.
- Poe is the best app for comparing GPT, Claude, Gemini, and niche bots in one place without juggling separate subscriptions, with paid plans from $4.99 per month.
- Perplexity suits research with verifiable sources, while Microsoft Copilot suits Windows and Microsoft 365 users who want GPT-powered help inside Office apps.
- Pricing varies by vendor and billing cycle, so confirm current prices on each app vendor site before subscribing, since app vendors reprice often.
Quick comparison
| Tool | Best for | Starting price | Free plan |
|---|
 Poe | Many models in one app | Free | Yes |
 Perplexity | Research with sources | Free | Yes |
 Microsoft Copilot | Windows and Microsoft 365 users | Free | Yes |
 ChatSonic | GPT-powered writing with search | See website | Yes |
 Jasper Chat | Marketing teams and brand voice | See website | No |
 Copy.ai Chat | Sales and marketing content | Free | Yes |
 ChatOn | Mobile GPT chat | See website | Yes |
 You.com | Model choice per query | Free | Yes |
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The best ChatGPT apps
Starting priceFree
Free planYes
Poe suits power users who want to compare GPT, Claude, Gemini, and niche bots without juggling separate subscriptions, since one app hosts many models behind a single account. Guides list its entry paid tier from $4.99 per month, with Premium at $19.99 per month and a top plan reaching $249.99, and its free tier covers casual use with limited messages. Its multi-model access makes it the best app for testing which model fits a task before committing to a single vendor.
Model access varies by plan, so confirm which GPT models your tier includes, and pricing varies by source, with weekly-billed plans converted to monthly figures in some guides. For users who want GPT alongside other models in one app, Poe offers the broadest model choice here.
What we like- Compare GPT, Claude, Gemini, and niche bots in one app
- Entry paid tier from $4.99 per month
- Power-user favorite
Watch out for- Premium at $19.99 per month in some guides
- Model access varies by plan
- Top plan reaches $249.99
#2Perplexity
Best for: Research with sources4.4/5 on
G2 (361 reviews, checked Oct 2026)
Visit perplexity.ai
Starting priceFree
Free planYes
Perplexity suits research with verifiable sources, fact-checking, and exploring unfamiliar topics, since answers include citations you can open and check rather than plain chat replies. Its Pro plan costs $20 per month, or $200 per year, with multi-model access including GPT models, and its free tier offers unlimited basic searches with 3 to 5 Pro searches per day. Its search-first design makes it the best pick when answers need sources.
The free tier limits Pro searches, and the top plan reaches $200 per month, so heavy researchers should budget Pro rather than relying on free limits. For research that must be verifiable, Perplexity offers the strongest source-based workflow here.
What we like- Research with verifiable sources
- Multi-model access including GPT
- Pro at $20 per month
Watch out for- Pro searches limited to 3 to 5 per day on free tier
- Top plan reaches $200 per month
- Search focus means less chat depth
Starting priceFree
Free planYes
Microsoft Copilot suits Windows and Microsoft 365 users who want GPT-powered help inside Word drafting, Excel data work, PowerPoint decks, and Outlook triage, plus Windows integration across the desktop. Its free tier covers chat and images with daily caps and no Deep Research, while full features run through Microsoft 365 Premium at $19.99 per month, since standalone Copilot Pro retired on August 1, 2026. Its Office integration sets it apart from standalone chat apps.
The retirement of standalone Copilot Pro means buyers must understand the Microsoft 365 route, and daily caps limit free-tier depth. For Office users who want GPT help where they already work, Copilot offers the deepest integration here.
What we like- GPT-powered help inside Word, Excel, PowerPoint, and Outlook
- Windows integration
- Free tier available
Watch out for- Standalone Copilot Pro retired August 2026
- Full features run through Microsoft 365 Premium at $19.99 per month
Starting priceSee website
Free planYes
ChatSonic, from Writesonic, suits GPT-powered writing with live search, combining chat with content templates for blogs, ads, and social posts. Its free tier covers trial generations, while paid plans vary by source and plan structure, so we list pricing as See website rather than inventing a figure. Its search integration means answers can include current information rather than training-data cutoffs.
Pricing varies by source, and its writing focus means less general chat depth than Poe or Perplexity. For writers who want GPT chat plus content templates in one app, ChatSonic offers the most writing-focused workflow here.
What we like- GPT-powered writing with live search
- Content templates
- Writesonic ecosystem integration
Watch out for- Pricing varies by source and plan
- Free tier limits generations
- Writing focus means less general chat
Starting priceSee website
Free planNo
Jasper Chat suits marketing teams that want GPT-powered chat with brand voice controls and templates for blogs, ads, and product descriptions. Its team workflows cover content at scale, with brand voice settings that keep output consistent across writers, and its marketing focus suits agencies and in-house teams producing campaigns. Pricing is not clearly published, so we list it as See website, and there is no free plan.
The lack of a free plan and published pricing makes comparison slower, and its marketing focus means less general chat depth. For marketing teams that want GPT chat tuned to brand voice, Jasper Chat offers the most marketing-specific app here.
What we like- Brand voice controls
- Marketing templates
- Team workflows for content at scale
Watch out for- Pricing not clearly published
- No free plan
- Marketing focus means less general chat
#6
Copy.ai Chat
Best for: Sales and marketing content
Visit copy.ai
Starting priceFree
Free planYes
Copy.ai Chat suits sales and marketing teams that want GPT-powered chat plus templates and workflow automation for content production. Its free tier covers trial use, while paid plans vary by plan structure, so confirm current pricing on the vendor site. Its workflow automation helps content teams move from chat to published drafts faster than general chat apps.
Paid pricing varies, and its marketing focus means less general chat depth than Poe. For sales and marketing teams that want chat plus workflows, Copy.ai Chat offers the most workflow-integrated app here.
What we like- Free tier available
- Sales and marketing templates
- Workflow automation for content teams
Watch out for- Paid pricing varies by plan
- Marketing focus means less general chat
- Workflow depth needs paid tiers
Starting priceSee website
Free planYes
ChatOn suits mobile users who want GPT-powered chat in a simple app, with a free tier and a mobile-first interface that prioritizes quick questions and drafts on a phone. Its simplicity appeals to casual users who do not need multi-model access or team workflows, and its app-store presence makes it easy to install and try. Pricing varies by platform and plan, so we list it as See website.
Its mobile focus means less desktop depth, and its feature set is narrower than Poe or Perplexity. For mobile-first users who want simple GPT chat on the go, ChatOn offers the most accessible mobile app here.
What we like- Mobile-first GPT chat
- Simple interface
- Free tier available
Watch out for- Pricing varies by platform and plan
- Mobile focus means less desktop depth
- Feature set is narrower than Poe
Starting priceFree
Free planYes
You.com suits users who want model choice per query, including GPT models, with privacy controls and a search-first design. Guides list Pro at about $15 per month, with a free tier for basic use, and its per-query model choice lets users pick the best model for each question rather than committing to one vendor. Its privacy controls appeal to users who care about data handling.
Pro pricing varies by source, and its smaller user base means less community support than Poe or Perplexity. For users who want per-query model choice with privacy controls, You.com offers the most flexible search-plus-chat app here.
What we like- Model choice per query including GPT
- Privacy controls
- Pro at about $15 per month
Watch out for- Pro pricing varies by source
- Smaller user base than Poe or Perplexity
- Search focus means less chat depth
How we chose
We compared October 2026 guide pricing for third-party apps built on or around ChatGPT, checking free tiers, paid prices, model access, and vendor focus. We favored apps with clear GPT-powered functionality and published pricing signals, and we flagged where pricing varies by source rather than inventing figures. We did not claim hands-on testing, and app vendors reprice often, so confirm current prices on each vendor site before subscribing.
Choosing by use case
For comparing many models in one app, choose Poe, since it hosts GPT, Claude, Gemini, and niche bots behind one account. For research with sources, choose Perplexity, since its citations let you verify answers. For Office work, choose Copilot, since its integration runs inside Word, Excel, PowerPoint, and Outlook. For marketing content, choose Jasper or Copy.ai, since their templates and brand voice controls suit campaigns. For mobile simplicity, choose ChatOn, and for per-query model choice, choose You.com.
Pricing traps in app subscriptions
App vendors reprice often, and weekly-billed plans converted to monthly figures can hide true costs, so check whether a quoted price is weekly, monthly, or annual. Free tiers vary widely, from unlimited basic chat to a handful of Pro searches per day, so test the free tier on your actual tasks before paying. Avoid paying for two apps that host the same GPT model unless the second app adds templates, workflows, or integrations you actually use.
Data and privacy notes
Third-party apps handle your prompts and data under their own privacy policies, not OpenAI's, so read each vendor's policy before entering sensitive information. Avoid pasting passwords, private client data, or unreleased business information into any chat app, and prefer vendors with clear data retention and deletion options. For regulated work, confirm whether the app vendor offers business or enterprise terms with stronger data protections.
Frequently asked questions
Are these apps made by OpenAI?
No, these are third-party apps built on or around ChatGPT and GPT models, with pricing from the app vendors rather than OpenAI. OpenAI's own ChatGPT app is separate, and this article covers the apps that wrap GPT models with extra features, templates, or model choice.
Which ChatGPT app is best for research?
Perplexity is best for research, since its answers include verifiable sources you can open and check, rather than plain chat replies. Poe also suits research when comparing models, since different models give different answers to the same question.
Can I use GPT models for free through these apps?
Yes, most apps here offer free tiers, including Poe, Perplexity, Copilot, ChatSonic, Copy.ai, ChatOn, and You.com, though free limits vary from unlimited basic chat to a handful of Pro searches per day. Paid plans remove limits and add features, so test free tiers on your actual tasks first.
Do third-party ChatGPT apps cost more than ChatGPT Plus?
It depends on the app: Poe entry plans start at $4.99 per month, below ChatGPT Plus at $20, while Poe top plans reach $249.99, far above Plus. Compare the app's added features against Plus, since paying for the same GPT model twice only makes sense when the app adds real value.
Which app is best for mobile ChatGPT use?
ChatOn is best for mobile-first GPT chat, with a simple interface and free tier built for phones. Poe and Perplexity also offer strong mobile apps, so choose ChatOn for simplicity and Poe for multi-model access on mobile.
Sources we checked (10)
- https://poe.com
- https://www.perplexity.ai
- https://copilot.microsoft.com
- https://writesonic.com
- https://www.jasper.ai
- https://www.copy.ai
- https://chaton.ai
- https://you.com
- https://aipricecompare.org/best/best-ai-subscription.html
- https://rankite.com/blog/best-ai-chatting-app
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.