kitio.aiPydantic Logfire vs OpenLIT
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Pydantic Logfire starts at $49/mo and OpenLIT 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
- OpenTelemetry tracing
- LLM call views
- Auto-instrumentation
- SQL queries on traces
- Dashboards
- LLM and agent tracing
- Evals
- Guardrails
- Prompt management
- Cost and GPU monitoring
| Feature | Pydantic Logfire | OpenLIT |
|---|---|---|
| Best for | OpenTelemetry observability for Python apps and AI agents | Open-source observability and evals for LLM apps and agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | $49/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Pydantic | OpenLIT |
| Based in | United Kingdom | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Pydantic Logfire starts at $49/mo and OpenLIT starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Personal
Free
- 10M records per month, hard-capped
- 3 projects, 30-day retention
- 1 seat + 2 read-only guests
Team
$49/mo
- 10M records included, $2/M after
- 5 seats included, $25/extra seat
- AI evaluations and human review
Growth
$249/mo
- Unlimited seats and projects
- Up to 90-day retention
- Priority support and BAA
Enterprise
Contact sales
- Compliance support
- Self-hosting options
2 plans
Open source
Free
- Self-hosted
- Tracing, evals and prompt management
- Apache 2.0
Enterprise
Contact sales
- Role-based access control
- Audit logs
- Alerts to Slack and PagerDuty
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
Pydantic Logfire
- Full-stack plus LLM traces
- Easy setup for Python
- SQL access to data
- Python-first experience
- Fewer eval tools than rivals
- Volume pricing needs monitoring
OpenLIT
- Free to self-host
- Built on OpenTelemetry
- Covers tracing, evals and prompts
- Hosted version is not yet available
- Enterprise features need a license
- Requires running your own infrastructure
Which one should you choose?
Choose Pydantic Logfire if you want:
- Full-stack plus LLM traces
- Easy setup for Python
- SQL access to data
Watch out: python-first experience.
Choose OpenLIT if you want:
- Free to self-host
- Built on OpenTelemetry
- Covers tracing, evals and prompts
Watch out: hosted version is not yet available.
Pydantic Logfire vs OpenLIT FAQ
What is the difference between Pydantic Logfire and OpenLIT?
Pydantic Logfire: OpenTelemetry observability for Python apps and AI agents. OpenLIT: Open-source observability and evals for LLM apps and agents. Both are models & apis tools.
Is Pydantic Logfire or OpenLIT cheaper?
Pydantic Logfire starts at $49/mo and OpenLIT starts at See pricing page. Check both pricing pages for current plans.
Do Pydantic Logfire and OpenLIT have free plans?
Pydantic Logfire: Yes. OpenLIT: Yes.
Who makes Pydantic Logfire?
Pydantic Logfire is made by Pydantic, based in United Kingdom.
Who makes OpenLIT?
OpenLIT is made by OpenLIT.
Which should I choose, Pydantic Logfire or OpenLIT?
Choose Pydantic Logfire if you value full-stack plus llm traces and easy setup for python. Choose OpenLIT if you value free to self-host and built on opentelemetry.