
Langfuse
situationalOpen-source LLM observability — traces, prompts, evals; MIT self-host or Cloud from Hobby.
Visit langfuse.com →> **Langfuse** — situational > Verified 2026-08-19 > Limitation: A "unit" is every trace, span, generation, and score — verbose agents get expensive. > > https://noemium.com/tools/langfuse/Add to kitOpen in NoemiumFact-check this catalog entry for Langfuse (dev-infra). Verdict: situational Verdict text: langfuse.com is live (the 404 rumor is stale). Cloud is unit-metered (traces + observations + scores); Hobby is a real free POC; Core at $29 is the production on-ramp. Self-host OSS is full core features, Enterprise is the RBAC/audit layer plus ClickHouse commercial. Not a field install here. Limitations: - A "unit" is every trace, span, generation, and score — verbose agents get expensive. - Hobby hard-caps at 50k units and 2 users; no overage. - SSO/RBAC on Cloud is Pro+$300 Teams add-on or Enterprise, not Core. - Self-host Enterprise pricing is additive to ClickHouse Cloud/BYOC. Receipts: https://langfuse.com/pricing https://langfuse.com/pricing-self-host https://github.com/langfuse/langfuse Last verified: 2026-08-19 Find outdated prices, wrong claims, or missing limitations. Cite primary sources (docs, pricing pages, benchmarks, model cards). Do not use marketing pages.[](https://noemium.com/tools/langfuse/)
ledger entry · observed by @whysanesanders
langfuse.com is live (the 404 rumor is stale). Cloud is unit-metered (traces + observations + scores); Hobby is a real free POC; Core at $29 is the production on-ramp. Self-host OSS is full core features, Enterprise is the RBAC/audit layer plus ClickHouse commercial. Not a field install here.
Strengths
- MIT-licensed self-host option with full core observability features.
- Cloud Hobby is a real free POC for small teams.
- Covers traces, prompts, evals, and unit-metered usage in one tool.
Known limitations
- A "unit" is every trace, span, generation, and score — verbose agents get expensive.
- Hobby hard-caps at 50k units and 2 users; no overage.
- SSO/RBAC on Cloud is Pro+$300 Teams add-on or Enterprise, not Core.
- Self-host Enterprise pricing is additive to ClickHouse Cloud/BYOC.
Use it when
- Teams that need LLM observability and can self-host for compliance.
- Small POCs that fit inside Hobby's 50k units and 2 users.
Skip it when
- Verbose agents would blow through the per-unit meter quickly.
- You need SSO/RBAC without paying Pro, Teams add-on, or Enterprise.
- You expect overage on the free Hobby tier.
Buy-check
- ·Price — freemium, self-host OSS free (MIT); Cloud Hobby $0 (50k units/mo, 2 users); Core $29/mo; Pro $199/mo; Enterprise from $2,499/mo; overage from $8/100k units as of 2026-08-19. Open the pricing page, not a screenshot.
- ·Free tier — Free tier exists — burn it first.
- ·Cancel fallout — What happens to your data/projects on cancel — check the ToS, not the FAQ.
- ·Seat math — Per-seat pricing multiplies quietly. Count seats before the annual plan.
- ·Who skips it — Also skipped when: Verbose agents would blow through the per-unit meter quickly.; You need SSO/RBAC without paying Pro, Teams add-on, or Enterprise..
Price trailchangelog →
No price move in this repo yet.
Facts
- pricing
- freemium1
- price note
- self-host OSS free (MIT); Cloud Hobby $0 (50k units/mo, 2 users); Core $29/mo; Pro $199/mo; Enterprise from $2,499/mo; overage from $8/100k units
- free tier
- yes
- open source
- yes
- api
- yes
- self-host
- yes
- category
- dev-infra
- evidence
- source-verified
Data: trains on inputs unknown · local processing yes
Sources
- 1langfuse.com/pricing[snapshot]
- 2langfuse.com/pricing-self-host[snapshot]
- 3github.com/langfuse/langfuse[snapshot]
No source, no number.
Similar joball alternatives →
| tool | verdict | price | oss | self-host |
|---|---|---|---|---|
| Langfuse | situational | freemium | yes | yes |
| Modal | ship | freemium | no | no |
| OpenRouter | ship | freemium | no | no |
| Replicate | ship | paid | no | no |
Facts from the catalog files — not scores you can buy. Quality and speed stay in the briefing, not in a fake 1–5 grid.
Modal
Serverless GPU and compute platform for running ML and AI workloads.
APIFREE TIER
freemiumfree tier ($30/mo compute); pay-as-you-go beyond
OpenRouteranchor
One API for every major model — unified billing, fallbacks and routing.
APIFREE TIER
freemiumpay-per-token pass-through plus a small fee
Replicate
Run any community model via API — pay per second, no GPU wrangling.
API
paidpay per run; image models from ~$0.003/image