# Langfuse vs Momentic

> Langfuse: Open-source platform to trace, evaluate and improve LLM applications and agents
> Momentic: AI QA platform that writes, runs and maintains end-to-end tests from plain English

- Langfuse profile: https://finderatlas.com/tools/langfuse
- Momentic profile: https://finderatlas.com/tools/momentic
- Comparison page: https://finderatlas.com/compare/langfuse-vs-momentic
- Last reviewed: November 2026

## Verdict

Langfuse and Momentic are both Developer Tools tools. Langfuse scores higher in FinderAtlas's editorial review (8.4 vs 7.9 out of 10), led by feature depth and value for money. Both have a free plan or trial.

### Choose Langfuse if

- You want a tool built for production tracing and debugging of LLM apps and agents, prompt versioning, and systematic evaluation on real data.
- MIT-licensed core with free self-hosting, avoiding vendor lock-in.
- Covers tracing, prompt management and evaluation in one platform.

### Choose Momentic if

- You want a tool built for replacing brittle selector-based end-to-end tests, running regression suites in CI, testing web and mobile flows with email and SMS steps.
- Tests are plain-English YAML in your repo, reviewable and versioned like code.
- Permanent free plan with 2,000 monthly credits and no credit card.

## Pricing

| | Langfuse | Momentic |
| --- | --- | --- |
| Pricing model | Freemium | Freemium |
| Free plan or trial | Yes | Yes |
| Starting price | $0 | $0 |

## Features

| Feature | Langfuse | Momentic |
| --- | --- | --- |
| Tracing | Yes | Not listed |
| Evaluation | Yes | Not listed |
| Prompt Management | Yes | Not listed |
| Playground | Yes | Not listed |
| Datasets and Experiments | Yes | Not listed |
| Cost and Latency Dashboards | Yes | Not listed |
| Open-Source Self-Hosting | Yes | Not listed |
| APIs and MCP Servers | Yes | Not listed |
| Plain-English tests | Not listed | Yes |
| Auto-healing | Not listed | Yes |
| Failure triage | Not listed | Yes |
| Knowledge base | Not listed | Yes |
| Assertions on run video | Not listed | Yes |
| Email and SMS in tests | Not listed | Yes |
| Web and mobile coverage | Not listed | Yes |
| App graph | Not listed | Yes |
| Coding agent integration | Not listed | Yes |
| Enterprise controls | Not listed | Yes |

## Platforms

| Platform | Langfuse | Momentic |
| --- | --- | --- |
| Web | Yes | Yes |
| Windows | No | No |
| macOS | No | No |
| iOS | No | No |
| Android | No | No |
| API | Yes | Yes |
| Browser Extension | No | No |
| CLI | Yes | Yes |

## Langfuse strengths

- MIT-licensed core with free self-hosting, avoiding vendor lock-in.
- Covers tracing, prompt management and evaluation in one platform.
- Free Hobby tier with 50k units per month and no credit card required.
- Over 100 integrations, plus OpenTelemetry for languages without a native SDK.
- Core plan at $29/month with unlimited users.

## Langfuse limitations

- Hobby is limited to 2 users and 30 days of data access.
- SOC 2, ISO 27001 and HIPAA support start at the $199/month Pro plan, and SSO and RBAC need a $300/month add-on.
- Audit logs, SCIM and SLAs are restricted to the $2,499/month Enterprise plan.
- Usage-based unit overage adds cost for high-volume tracing.

## Momentic strengths

- Tests are plain-English YAML in your repo, reviewable and versioned like code.
- Permanent free plan with 2,000 monthly credits and no credit card.
- Auto-healing and failure classification reduce time spent on flaky tests.
- Covers web, Android and iOS (beta) in one platform, plus email and SMS steps.
- SOC 2 Type 2 on all plans and MCP access for coding agents.

## Momentic limitations

- Free plan stops at 2,000 credits with no top-ups, and mobile sessions are capped at 15 minutes.
- Pay-as-you-go starts at $125 per month, and mobile minutes are costly (8 to 15 credits per minute).
- iOS support is in beta and the Mo autonomous agent is in private beta.
- SAML SSO, SCIM and audit logs are Enterprise only.

## FAQ

**Is Langfuse better than Momentic?**

It depends on your workflow. Langfuse is built for production tracing and debugging of LLM apps and agents, prompt versioning, and systematic evaluation on real data. Momentic is built for replacing brittle selector-based end-to-end tests, running regression suites in CI, testing web and mobile flows with email and SMS steps.

**What are the key feature differences between Langfuse and Momentic?**

Langfuse: Open-source platform to trace, evaluate and improve LLM applications and agents. Momentic: AI QA platform that writes, runs and maintains end-to-end tests from plain English.

**Does Langfuse or Momentic have a free plan?**

Yes, both do. Langfuse is freemium and Momentic is freemium, and each has a free plan or trial.

**Which is cheaper, Langfuse or Momentic?**

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.