kitio.aiDatadog LLM Observability vs Manifest
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Datadog LLM Observability starts at See pricing page and Manifest starts at $19/mo. Check both pricing pages for current plans.
LLM and agent monitoring inside the Datadog observability platform
Free trialAt a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Agent and LLM tracing
- Quality evaluations
- Prompt-injection checks
- Cost and token tracking
- APM correlation
- Multi-provider routing
- Automatic failure recovery
- Local model support
- Usage and cost tracking
- Self-hosted or cloud
| Feature | Datadog LLM Observability | Manifest |
|---|---|---|
| Best for | LLM and agent monitoring inside the Datadog observability platform | Open-source LLM gateway that routes agents to any provider |
| Category | Models & APIs | Models & APIs |
| Pricing model | Free trial | Freemium |
| Starting price | See pricing page | $19/mo |
| Free plan | No, 14-day trial | Yes |
| Made by | Datadog | Manifest |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Datadog LLM Observability starts at See pricing page and Manifest starts at $19/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Self-hosted
Free
- Unlimited routed requests
- All providers and local models
- Community support on Discord
Manifest Cloud
$19/mo
- Hosted gateway
- Same-day updates
- Servers and uptime managed
Enterprise
Contact sales
- On-premise or VPC
- SSO and audit logs
- Support contract
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
Datadog LLM Observability
- Joins AI and infra monitoring
- Built-in safety checks
- Enterprise-ready
- Expensive at scale
- Best only if you use Datadog
- Less flexible eval workflows
Manifest
- Free self-hosting with no request limits
- Works with subscriptions and local models
- Code is open for review
- No free tier on the hosted cloud
- Community-only support when self-hosted
Which one should you choose?
Choose Datadog LLM Observability if you want:
- Joins AI and infra monitoring
- Built-in safety checks
- Enterprise-ready
Watch out: expensive at scale.
Choose Manifest if you want:
- Free self-hosting with no request limits
- Works with subscriptions and local models
- Code is open for review
Watch out: no free tier on the hosted cloud.
Datadog LLM Observability vs Manifest FAQ
What is the difference between Datadog LLM Observability and Manifest?
Datadog LLM Observability: LLM and agent monitoring inside the Datadog observability platform. Manifest: Open-source LLM gateway that routes agents to any provider. Both are models & apis tools.
Is Datadog LLM Observability or Manifest cheaper?
Datadog LLM Observability starts at See pricing page and Manifest starts at $19/mo. Check both pricing pages for current plans.
Do Datadog LLM Observability and Manifest have free plans?
Datadog LLM Observability: No, 14-day trial. Manifest: Yes.
Who makes Datadog LLM Observability?
Datadog LLM Observability is made by Datadog, based in United States.
Who makes Manifest?
Manifest is made by Manifest.
Which should I choose, Datadog LLM Observability or Manifest?
Choose Datadog LLM Observability if you value joins ai and infra monitoring and built-in safety checks. Choose Manifest if you value free self-hosting with no request limits and works with subscriptions and local models.