Langfuse vs Probabl
Langfuse vs Probabl, compared side by side on 21 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Langfuse is on 55/100 and Probabl on 54/100.
Where each one leads
Langfuse
- agent readiness: 43/100 against 29/100
- domain rating: 79/100 against 57/100
Probabl
- headcount: 55 against 21
- funding raised: $18.5M against $2.5M
At a glance
| Measure | Langfuse | Probabl |
|---|---|---|
| What it is | Open-source LLM engineering platform for debugging, monitoring, and improving production-grade LLM applications. | Track experiments, validate models, and collaborate with confidence using Skore, the methodology layer for AI coding tools. |
| Category | MLOps, Observability, Developer Tools, API Platform | MLOps, DataOps, Developer Tools, AI Coding Assistant |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Software |
| Founded | 2022 | 2023 |
| Headquarters | Berlin, Germany | Paris, France |
| Status | Active | Active |
Size, funding and growth
| Measure | Langfuse | Probabl |
|---|---|---|
| Employees | 21 | 55 |
| Headcount growthLast 12 months | +81.0% | Not published |
| Total funding | $2.5M | $18.5M |
| Latest round | Seed | Seed |
| LinkedIn followers | 13,143 | 14,660 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Langfuse | Probabl |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 55/100 | 54/100 |
| Traction | 45/100 | 54/100 |
| Team | 70/100 | 70/100 |
| Search visibility | 58/100 | 24/100 |
| Quality | 58/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (43/100) | F (29/100) |
| Domain ratingLink authority, 0-100 | 79/100 | 57/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Langfuse | Probabl |
|---|---|---|
| Hosting | Vercel | AWS |
| CDN | Vercel | Not detected |
| Frameworks | Next.js, Tailwind CSS | Astro |
| Analytics | Google Analytics 4, Google Tag Manager, Segment | Not detected |
| Support stack | HubSpot | Not detected |
| Open source | Yes | No |
Product and pricing
| Measure | Langfuse | Probabl |
|---|---|---|
| Key features | Full Context Tracing, Cost & Latency Monitoring, Output Quality Evaluation, Prompt Management & Experimentation, Testing & Benchmarking | Not published |
Langfuse vs Probabl: common questions
Which is better, Langfuse or Probabl?
On our 0-100 score Langfuse rates higher (55/100 against 54/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 21 data points above: read the rows that match what you are buying for.
How do Langfuse and Probabl compare on the numbers?
Langfuse leads on agent readiness (43/100 against 29/100), domain rating (79/100 against 57/100). Probabl leads on headcount (55 against 21), funding raised ($18.5M against $2.5M).
Read the full Langfuse review and pricing or the Probabl review and pricing. You can also browse other Langfuse alternatives we track.