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Best Langfuse Alternatives

Reviewed byRoman K

3 alternatives to Langfuse in AI & ML, compared by pricing, DX grade, security, and vendor lock-in.

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Langfuse

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LLM engineering platform

Pricing: freemium, from $0/mo

Stars: 11.2k

Langtrace

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Pricing

freemium

GitHub Stars

3.8k

Datadog

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Pricing

freemium ($15+/mo)

Sentry

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Pricing

freemium ($26+/mo)

GitHub Stars

44.2k

Weekly Downloads

26.0M

Pricing and traction at a glance

Of the 3 alternatives listed, 3 are tracked with full data: 3 keep a free plan. Paid entries run from $0/mo (Langtrace) to $26/mo (Sentry). Sentry carries the most GitHub traction with 44,200 stars. Switching cost is usually driven by lock-in, not by the sticker price.

Tool	Pricing	Free plan	GitHub stars
Langtrace	freemium — from $0/mo	yes	3,800
Datadog	freemium — from $15/mo	yes	—
Sentry	freemium — from $26/mo	yes	44,200

FAQ

What are the best Langfuse alternatives in 2026?

The top alternatives to Langfuse are Langtrace, Datadog, Sentry. Each offers different trade-offs in pricing, developer experience, and lock-in risk.

Is there a free alternative to Langfuse?

Several Langfuse alternatives offer free tiers or self-hosted options: check individual pricing pages for current free tier availability.

How many Langfuse alternatives are tracked here?

3 in the AI & ML category, compared on price difference, lock-in risk and developer experience where editorial data exists.

Full Langfuse Profile →

Frequently asked questions

What are the best Langfuse alternatives in 2026?▾

The top alternatives to Langfuse are Langtrace, Datadog, Sentry. Each offers different trade-offs in pricing, developer experience, and lock-in risk.

Is there a free alternative to Langfuse?▾

Several Langfuse alternatives offer free tiers or self-hosted options: check individual pricing pages for current free tier availability.

How many Langfuse alternatives are tracked here?▾

3 in the AI & ML category, compared on price difference, lock-in risk and developer experience where editorial data exists.