Softwr

Networking · head to head

OpenVPN vs Traceloop

OpenVPN logo

OpenVPN

Networking

Open source VPN protocol with a commercial Access Server product priced per simultaneous connection

From
Free
Rated
-
Full reviewWebsite
Traceloop logo

Traceloop

Logging

LLM reliability platform with open-source observability and evaluation

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: OpenVPN open source OpenVPN, while free, requires real technical skill to configure, secure and maintain without the Access Server admin layer; Traceloop free tier limited to 50k spans per month and 24-hour retention, restricting production use
  • They diverge on capability: OpenVPN covers Open source core, Traceloop covers Open-source SDK (OpenLLMetry).
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which OpenVPN and Traceloop actually diverge.

Attributes where OpenVPN and Traceloop differ
AttributeOpenVPNTraceloop
Pricing modelOpen source core is free; Access Server billed per simultaneous connectionFreemium with pay-as-you-go enterprise option
PlatformsLinux, Windows, macOS, iOS, AndroidCloud, On-premises, Air-gapped, Python, TypeScript, Go, Ruby
CategoryNetworkingLogging

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in OpenVPN

  • Open source core
  • Access Server admin UI
  • Per-connection licensing
  • Free tier
  • Cross-platform clients

Only in Traceloop

  • Open-source SDK (OpenLLMetry)
  • Multi-provider support
  • Observability platform integration
  • Framework support
  • Monitoring dashboard
  • Evaluation system
  • Deployment flexibility

What people use each for

The jobs each tool is most often brought in to do.

OpenVPN

  • A technical team wanting a fully free, self-configured VPN server using the open source protocol without any vendor relationshipnot Traceloop
  • A small business wanting a supported, easier-to-administer VPN server, willing to pay per concurrent connection rather than per employeenot Traceloop
  • An organisation with more staff than typical concurrent VPN usage, since Access Server bills only active simultaneous connections, not total accountsnot Traceloop
  • An IoT or large-scale deployment needing custom Enterprise pricing above 2,000 connectionsnot Traceloop

Traceloop

  • Monitoring LLM application performance in productionnot OpenVPN
  • Instrumenting LLM apps with minimal code overheadnot OpenVPN
  • Continuous evaluation and quality scoring of LLM outputsnot OpenVPN
  • Debugging LLM application issues with full trace visibilitynot OpenVPN
  • Integrating observability data into existing monitoring stacksnot OpenVPN

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

OpenVPN

  • Open source OpenVPN, while free, requires real technical skill to configure, secure and maintain without the Access Server admin layer
  • Per-connection billing on Access Server means usage spikes, such as an all-hands remote day, can push simultaneous connections over a licensed limit and block new connections until usage drops or the plan is upgraded
  • OpenVPN's traditional hub-and-spoke architecture routes traffic through a central server, unlike mesh VPN tools like Tailscale or NetBird that establish direct peer-to-peer connections where possible, which can add latency
  • Client configuration and certificate management for the open source version is more manual and error-prone than newer VPN tools with zero-config onboarding
  • Access Server pricing above the Growth tier reverts to custom Enterprise quoting, so very large deployments lose the pricing transparency of the lower tiers
  • The protocol's throughput is generally lower than newer kernel-integrated protocols like WireGuard under equivalent conditions, which matters for high-bandwidth use cases

Traceloop

  • Free tier limited to 50k spans per month and 24-hour retention, restricting production use
  • Company acquisition by ServiceNow creates uncertainty about future roadmap
  • Requires integration with separate observability platforms for visualization
  • Less feature-rich than dedicated LLM evaluation platforms

Pricing, plan by plan

OpenVPN

Free
  • Access Server FreeFree
    • Up to 2 simultaneous connections
    • All features included
  • Access Server Growth$7/month
    • Per simultaneous connection beyond the free tier
    • Annual billing
  • Access Server Enterprise/IoT$undefined/month
    • Custom pricing for 2,000+ connections

Traceloop

Free
  • FreeFree
    • 50,000 spans per month
    • Up to 5 seats
    • 24-hour data retention
  • Enterprise$undefined/custom
    • Unlimited spans per month
    • Unlimited seats
    • Custom data retention

Which should you pick?

Choose OpenVPN if

  • You need open source core.
  • You want to start without paying.
  • You work on Linux, Windows, macOS, iOS, Android.
  • You also want access server admin ui.
OpenVPN review

Choose Traceloop if

  • You need open-source sdk (openllmetry).
  • You want to start without paying.
  • You work on Cloud, On-premises, Air-gapped, Python, TypeScript, Go, Ruby.
  • You also want multi-provider support.
Traceloop review

Questions people ask

Is OpenVPN or Traceloop better?
Neither clearly leads. OpenVPN starts at Free and Traceloop at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenVPN or Traceloop?
OpenVPN starts at Free and Traceloop at Free.
Does OpenVPN or Traceloop run on more platforms?
OpenVPN runs on Linux, Windows, macOS, iOS, Android. Traceloop runs on Cloud, On-premises, Air-gapped, Python, TypeScript, Go, Ruby.
Can I use OpenVPN for free?
Both have a free tier, so you can try either at no cost before committing.
What is OpenVPN best used for?
OpenVPN is most often used for a technical team wanting a fully free, self-configured vpn server using the open source protocol without any vendor relationship, a small business wanting a supported, easier-to-administer vpn server, willing to pay per concurrent connection rather than per employee, an organisation with more staff than typical concurrent vpn usage, since access server bills only active simultaneous connections, not total accounts, an iot or large-scale deployment needing custom enterprise pricing above 2,000 connections. Of those, a technical team wanting a fully free, self-configured vpn server using the open source protocol without any vendor relationship and a small business wanting a supported, easier-to-administer vpn server, willing to pay per concurrent connection rather than per employee are not what Traceloop is typically brought in for.
What can OpenVPN do that Traceloop cannot?
OpenVPN covers Open source core, Access Server admin UI, Per-connection licensing, Free tier. Traceloop covers Open-source SDK (OpenLLMetry), Multi-provider support, Observability platform integration, Framework support.

Answered from the vendors’ own pages

OpenVPN: Is OpenVPN free?

The open source protocol and software are free under the GPL; Access Server, the commercial packaged product, charges per simultaneous connection beyond a free 2-connection tier.

Traceloop: Is OpenLLMetry open-source?

Yes, OpenLLMetry is Traceloop's open-source SDK built on OpenTelemetry standards. It allows teams to instrument LLM applications with just 2 lines of code and send data to 25+ observability platforms.

Source
OpenVPN: What counts as a connection for billing purposes?

A simultaneously active connected device, not a registered user account or total device count; unlimited accounts and devices can be created but only the licensed number can be connected at once.

Traceloop: What is the impact of ServiceNow acquisition?

Traceloop is joining ServiceNow, representing a strategic acquisition that will broaden enterprise adoption and integration capabilities. Current operations continue with free and enterprise options available.

Source
OpenVPN: How does OpenVPN compare with WireGuard-based tools like Tailscale?

OpenVPN uses a traditional hub-and-spoke VPN architecture rather than the mesh, peer-to-peer approach used by newer tools like Tailscale or NetBird.

Traceloop: How many LLM providers and frameworks does Traceloop support?

Traceloop supports 20+ LLM providers including OpenAI and Anthropic, and integrates with frameworks like LangChain and LlamaIndex. It can send data to 25+ observability platforms.

Source
Share

Related pages

More on OpenVPN

More on Traceloop

Keep looking

Other head to heads