Head-to-Head Comparison · Alternative to LangSmith · 📊 analytics
LangSmith vs OpenLLMetry
Open-source observability platform for LLMs using OpenTelemetry. Monitor performance, track costs, and debug AI applications with just 2 lines of code. Here is how OpenLLMetry ($0/mo open source) stacks up against LangSmith ($35/mo) across cost, hosting, data privacy, and real-world trade-offs.
OpenLLMetry is a verified Open Source-licensed open-source replacement for LangSmith. Switching from LangSmith ($35/mo) saves $420/yr per solo seat, or $2,100/yr for a 5-person team. Deployment: Runs on Local.
The catch: Community-driven open source project without dedicated enterprise SLAs.
OpenLLMetry
$0.00/mo · Open Source
LangSmith vs OpenLLMetry Specifications
facts verified 2026-11-07
| Dimension | LangSmith (Paid) | OpenLLMetry (Replacement) |
|---|---|---|
| Monthly Price | $35 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $420 / yr | $0 / yr (Save $420) |
| 1-Year Cost (5 seats) | $2,100 / yr | $0 / yr (Save $2,100) |
| 1-Year Cost (10 seats) | $4,200 / yr | $0 / yr (Save $4,200) |
| Source & License | Proprietary SaaS | open source Open Source |
| Where It Runs | Vendor Cloud | Local (on your machine) |
| Platforms | Web / Cloud | desktopcross-platformone-click install |
| GitHub Stars | — | ★ 7.5k (active nov 2026) |
Deep Dive: Switching from LangSmith to OpenLLMetry
Trade-offs, installation & data architecture
What you trade away
Community-driven open source project without dedicated enterprise SLAs.
How to deploy OpenLLMetry
Clone https://github.com/traceloop/openllmetry or deploy with Docker Compose
What it takes to run
Download the native package or installer for your operating system.
Where your data lives
All application data lives locally on your own machine.
Why fork OpenLLMetry instead of vibe-coding a LangSmith clone?
Instead of paying recurring SaaS fees for LangSmith or rebuilding it from scratch, deploy one of the 8 battle-tested open-source alternatives like Langfuse.
LangSmith vs OpenLLMetry FAQ
Is OpenLLMetry a good free alternative to LangSmith?+
Yes. OpenLLMetry is a verified open-source (Open Source) replacement for LangSmith. Open-source observability platform for LLMs using OpenTelemetry. Monitor performance, track costs, and debug AI applications with just 2 lines of code.
What is the catch when switching from LangSmith to OpenLLMetry?+
Community-driven open source project without dedicated enterprise SLAs.
How much do you save switching from LangSmith to OpenLLMetry?+
LangSmith costs $35/mo ($420/yr) per seat, whereas OpenLLMetry is $0/mo. Switching saves $420/yr for a solo user, $2,100/yr for a 5-person team, and $4,200/yr for a 10-person team.
How do I install or self-host OpenLLMetry instead of LangSmith?+
Install: Clone https://github.com/traceloop/openllmetry or deploy with Docker Compose. Setup: Download the native package or installer for your operating system.
