kitio.aiOpik vs Cekura
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Opik has the lower starting price: about $19 a month, against $500 for Cekura.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Tracing and spans
- Evaluation metrics
- Agent optimizer
- Guardrails
- Framework integrations
- Simulated test conversations
- Production call monitoring
- Red-teaming
- Cross-platform benchmarks
- Automated prompt fixes
| Feature | Opik | Cekura |
|---|---|---|
| Best for | Comet's open-source platform for LLM tracing and evaluation | Testing and monitoring platform for voice and chat AI agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Free trial |
| Starting price | $19/mo | $500/mo |
| Free plan | Yes | No, trial available |
| Made by | Comet | Cekura |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
Opik has the lower starting price: about $19 a month, against $500 for Cekura.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Open Source
Free
- Self-hosted
- Full observability feature set
- Unlimited spans
Free Cloud
Free
- Up to 10 team members
- 25k spans per month
- 60-day data retention
Pro Cloud
$19/mo
- Up to 50 team members
- 100k spans per month
- $5 per extra 100k spans
Enterprise
Custom
- Unlimited team members
- Flexible deployments
- Single sign-on
- 2-hour response SLA
3 plans
Pay as you go
$0.25 / testing minute
- $0.05 per monitored call
- 1 free seat
- 30-day log retention
Startup
$500/mo
- About 2,000 testing minutes
- About 10,000 monitored calls
- 10 seats and 5 projects
Enterprise
Custom
- Volume discounts
- Custom limits and retention
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
Opik
- Free and self-hostable
- Automatic prompt optimization
- Many integrations
- Smaller community than Langfuse
- Hosted plan limits vary
- Docs split with Comet ML
Cekura
- Covers testing and live monitoring
- Pay-as-you-go entry option
- Compares voice platforms side by side
- Startup plan costs $500 a month
- Extra seats cost $30 each
- Short log retention on pay as you go
Which one should you choose?
Choose Opik if you want:
- Free and self-hostable
- Automatic prompt optimization
- Many integrations
Watch out: smaller community than langfuse.
Choose Cekura if you want:
- Covers testing and live monitoring
- Pay-as-you-go entry option
- Compares voice platforms side by side
Watch out: startup plan costs $500 a month.
Opik vs Cekura FAQ
What is the difference between Opik and Cekura?
Opik: Comet's open-source platform for LLM tracing and evaluation. Cekura: Testing and monitoring platform for voice and chat AI agents. Both are models & apis tools.
Is Opik or Cekura cheaper?
Opik has the lower starting price: about $19 a month, against $500 for Cekura.
Do Opik and Cekura have free plans?
Opik: Yes. Cekura: No, trial available.
Who makes Opik?
Opik is made by Comet, based in United States.
Who makes Cekura?
Cekura is made by Cekura, based in United States.
Which should I choose, Opik or Cekura?
Choose Opik if you value free and self-hostable and automatic prompt optimization. Choose Cekura if you value covers testing and live monitoring and pay-as-you-go entry option.