kitio.aiSentry vs Exists
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Sentry starts at See pricing page and Exists starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Error monitoring
- Tracing and profiling
- Session replay
- Seer AI debugging agent
- AI code review
- Sentry MCP server
- Text-to-game generation
- Automatic world generation
- Multiple game genres
- Team and vehicle editing
- Cinematic rendering tool
| Feature | Sentry | Exists |
|---|---|---|
| Best for | Error and performance monitoring with an AI debugging agent | Create playable multiplayer 3D games from a text prompt |
| Category | Coding | Coding |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | Yes | Yes |
| Made by | Functional Software (Sentry) | Exists |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Sentry starts at See pricing page and Exists starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Developer
Free
- Limited to one user
- Error monitoring and tracing
- 10 custom dashboards
- MCP access
Team
$26/mo billed yearly
- Unlimited users
- Third-party integrations
- 20 custom dashboards
- Seer available as add-on
Business
$80/mo billed yearly
- Unlimited custom dashboards
- Advanced quota management
- SAML and SCIM support
Enterprise
Contact sales
- Technical account manager
- Dedicated support
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Sentry
- Free plan for solo developers
- AI debugging works from real error data
- Wide SDK coverage
- Integrates with GitHub and Slack
- Seer needs a separate subscription
- Free plan is limited to one user
- Costs rise with event volume
Exists
- No coding or game engine needed
- Games are multiplayer by default
- Runs fully in the browser
- Limited to a set of game genres
- No public pricing details
- Less control than a real game engine
Which one should you choose?
Choose Sentry if you want:
- Free plan for solo developers
- AI debugging works from real error data
- Wide SDK coverage
Watch out: seer needs a separate subscription.
Choose Exists if you want:
- No coding or game engine needed
- Games are multiplayer by default
- Runs fully in the browser
Watch out: limited to a set of game genres.
Sentry vs Exists FAQ
What is the difference between Sentry and Exists?
Sentry: Error and performance monitoring with an AI debugging agent. Exists: Create playable multiplayer 3D games from a text prompt. Both are coding tools.
Is Sentry or Exists cheaper?
Sentry starts at See pricing page and Exists starts at See pricing page. Check both pricing pages for current plans.
Do Sentry and Exists have free plans?
Sentry: Yes. Exists: Yes.
Who makes Sentry?
Sentry is made by Functional Software (Sentry), based in United States.
Who makes Exists?
Exists is made by Exists.
Which should I choose, Sentry or Exists?
Choose Sentry if you value free plan for solo developers and ai debugging works from real error data. Choose Exists if you value no coding or game engine needed and games are multiplayer by default.