kitio.aiChatGPT vs LegacyAI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. ChatGPT starts at $8/mo and LegacyAI starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Voice conversations
- File and image analysis
- Web search with sources
- Deep research
- Custom GPTs
- Projects and memory
- ChatGPT chat on classic Mac OS
- DALL-E image generation
- Saved conversations
- Custom proxy support
- HTTPS on PowerPC and Intel
| Feature | ChatGPT | LegacyAI |
|---|---|---|
| Best for | OpenAI's general assistant for writing, research, coding and images | ChatGPT client for vintage Macs from System 7 to OS X El Capitan |
| Category | Chat assistants | Chat assistants |
| Pricing model | Freemium | Freemium |
| Starting price | $8/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | OpenAI | Manticore Software |
| Based in | United States | New Zealand |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
ChatGPT starts at $8/mo and LegacyAI starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
6 plans
Free
Free
- Access to GPT models with limits
- Limited file uploads and image generation
Go
$8/mo
- Higher message and upload limits
- More image generation
- Longer memory
Plus
$20/mo
- Advanced reasoning models
- Deep research and agent mode
- Codex access
Pro
$100/mo
- Starting price; $200 and $500 tiers
- Highest usage limits
- Pro reasoning model
Business
$25/mo
- Per user, 2-seat minimum
- Shared workspace and admin controls
- No training on your data
Enterprise
Contact sales
- Enterprise security and SSO
- Expanded context and limits
- Dedicated 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
ChatGPT
- Handles a very wide range of tasks
- Strong voice mode on mobile
- Large ecosystem of custom GPTs
- Best models and limits sit on paid plans
- Free and Go tiers show ads
- Can state wrong facts confidently
LegacyAI
- Runs on Macs from 1988 onward
- Free to use
- Can connect to other AI services via proxy
- 68k build has no encrypted connection
- Shared API access depends on donations
- Advanced models need a paid license
Which one should you choose?
Choose ChatGPT if you want:
- Handles a very wide range of tasks
- Strong voice mode on mobile
- Large ecosystem of custom GPTs
Watch out: best models and limits sit on paid plans.
Choose LegacyAI if you want:
- Runs on Macs from 1988 onward
- Free to use
- Can connect to other AI services via proxy
Watch out: 68k build has no encrypted connection.
ChatGPT vs LegacyAI FAQ
What is the difference between ChatGPT and LegacyAI?
ChatGPT: OpenAI's general assistant for writing, research, coding and images. LegacyAI: ChatGPT client for vintage Macs from System 7 to OS X El Capitan. Both are chat assistants tools.
Is ChatGPT or LegacyAI cheaper?
ChatGPT starts at $8/mo and LegacyAI starts at See pricing page. Check both pricing pages for current plans.
Do ChatGPT and LegacyAI have free plans?
ChatGPT: Yes. LegacyAI: Yes.
Who makes ChatGPT?
ChatGPT is made by OpenAI, based in United States.
Who makes LegacyAI?
LegacyAI is made by Manticore Software, based in New Zealand.
Which should I choose, ChatGPT or LegacyAI?
Choose ChatGPT if you value handles a very wide range of tasks and strong voice mode on mobile. Choose LegacyAI if you value runs on macs from 1988 onward and free to use.