kitio.aiMicrosoft 365 Copilot vs Prompt Ark
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Prompt Ark has the lower starting price: about $3 a month, against $25 for Microsoft 365 Copilot.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Copilot in Word and Excel
- Teams meeting recaps
- Outlook drafting
- Researcher agent
- Copilot Studio
- Prompt optimizer
- Text, image and video prompts
- Image-to-prompt
- Prompt library
- Personal prompt collections
- Credit-based advanced mode
| Feature | Microsoft 365 Copilot | Prompt Ark |
|---|---|---|
| Best for | AI assistant inside Word, Excel, Outlook, Teams and PowerPoint | Turns rough ideas into prompts for ChatGPT, Claude and Gemini |
| Category | Productivity | Productivity |
| Pricing model | Paid | Freemium |
| Starting price | $25.20/mo | $41.92/yr |
| Free plan | No | Yes |
| Made by | Microsoft | Prompt Ark |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Prompt Ark has the lower starting price: about $3 a month, against $25 for Microsoft 365 Copilot.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Copilot Business (add-on)
$25.20/mo
- Per user, monthly subscription
- Adds Copilot to a Microsoft 365 plan
- $21/mo if paid yearly
Business Standard + Copilot
$28.20/mo
- Per user, monthly subscription
- Desktop Office apps
- Copilot in Microsoft 365 apps
Business Premium + Copilot
$38.40/mo
- Per user, monthly subscription
- Advanced security
- Copilot in Microsoft 365 apps
Enterprise
Contact sales
- For organizations over 300 users
- Enterprise licensing
2 plans
Free
Free
- 10 basic optimizations per day
- Community support
Advanced
$41.92/yr
- 1,800 credits per year
- Advanced prompt generation
- Ad-free experience
- Priority email support
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Microsoft 365 Copilot
- Works inside familiar apps
- Uses your work data securely
- Strong admin controls
- Adds cost per user
- Quality varies between apps
Prompt Ark
- Free daily prompt optimizations
- Covers text, image and video prompts
- Run the prompt on a model from the same page
- Free plan is limited to 10 optimizations a day
- Credits expire at the end of the plan period
- Video prompts are still marked as coming soon
Which one should you choose?
Choose Microsoft 365 Copilot if you want:
- Works inside familiar apps
- Uses your work data securely
- Strong admin controls
Watch out: adds cost per user.
Choose Prompt Ark if you want:
- Free daily prompt optimizations
- Covers text, image and video prompts
- Run the prompt on a model from the same page
Watch out: free plan is limited to 10 optimizations a day.
Microsoft 365 Copilot vs Prompt Ark FAQ
What is the difference between Microsoft 365 Copilot and Prompt Ark?
Microsoft 365 Copilot: AI assistant inside Word, Excel, Outlook, Teams and PowerPoint. Prompt Ark: Turns rough ideas into prompts for ChatGPT, Claude and Gemini. Both are productivity tools.
Is Microsoft 365 Copilot or Prompt Ark cheaper?
Prompt Ark has the lower starting price: about $3 a month, against $25 for Microsoft 365 Copilot.
Do Microsoft 365 Copilot and Prompt Ark have free plans?
Microsoft 365 Copilot: No. Prompt Ark: Yes.
Who makes Microsoft 365 Copilot?
Microsoft 365 Copilot is made by Microsoft, based in United States.
Who makes Prompt Ark?
Prompt Ark is made by Prompt Ark.
Which should I choose, Microsoft 365 Copilot or Prompt Ark?
Choose Microsoft 365 Copilot if you value works inside familiar apps and uses your work data securely. Choose Prompt Ark if you value free daily prompt optimizations and covers text, image and video prompts.