kitio.aiSentry Seer vs Middleware
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Sentry Seer starts at $40/mo and Middleware 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
- Root cause analysis
- Automated fix PRs
- AI code review
- Local debugging
- Telemetry context
- OpsAI SRE agent
- Infrastructure monitoring
- APM and tracing
- Log monitoring
- Real user monitoring
- LLM observability
| Feature | Sentry Seer | Middleware |
|---|---|---|
| Best for | Sentry's AI agent that finds root causes and fixes bugs | Full-stack observability platform with an AI SRE agent that fixes issues |
| Category | Coding | Coding |
| Pricing model | Paid | Freemium |
| Starting price | $40/mo | See pricing page |
| Free plan | No | Yes |
| Made by | Sentry | Middleware |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Sentry Seer starts at $40/mo and Middleware starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
1 plan
Seer
$40/mo
- Per active contributor
- Requires a paid Sentry plan
- Autofix and AI code review
3 plans
Free Forever
Free
- Up to 100GB data
- 1k RUM sessions
- 20k synthetic checks
- 14-day retention
Pay As You Go
$0.3 / GB
- $1 per 1K RUM sessions
- OpsAI error solving
- 30-day retention
- SSO and security features
BYOC
Custom
- Bring your own cloud
- Custom data retention
- 24x7 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
Sentry Seer
- Uses real production data
- Unlimited use per contributor
- Fixes arrive as PRs
- Requires Sentry
- Add-on cost per contributor
Middleware
- Generous 100GB free tier
- Simple per-GB usage pricing
- AI agent suggests and applies fixes
- Usage costs can be hard to forecast
- Free tier keeps data only 14 days
- Smaller ecosystem than older APM vendors
Which one should you choose?
Choose Sentry Seer if you want:
- Uses real production data
- Unlimited use per contributor
- Fixes arrive as PRs
Watch out: requires sentry.
Choose Middleware if you want:
- Generous 100GB free tier
- Simple per-GB usage pricing
- AI agent suggests and applies fixes
Watch out: usage costs can be hard to forecast.
Sentry Seer vs Middleware FAQ
What is the difference between Sentry Seer and Middleware?
Sentry Seer: Sentry's AI agent that finds root causes and fixes bugs. Middleware: Full-stack observability platform with an AI SRE agent that fixes issues. Both are coding tools.
Is Sentry Seer or Middleware cheaper?
Sentry Seer starts at $40/mo and Middleware starts at See pricing page. Check both pricing pages for current plans.
Do Sentry Seer and Middleware have free plans?
Sentry Seer: No. Middleware: Yes.
Who makes Sentry Seer?
Sentry Seer is made by Sentry, based in United States.
Who makes Middleware?
Middleware is made by Middleware, based in United States.
Which should I choose, Sentry Seer or Middleware?
Choose Sentry Seer if you value uses real production data and unlimited use per contributor. Choose Middleware if you value generous 100gb free tier and simple per-gb usage pricing.