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Langfuse
FreemiumOpen-source LLM observability and prompt management for AI applications.
Best for: llm application observability, prompt management with version control
Verified by editorial·Last updated: May 2026·How we rank
Not yet in our hand-tested rotation
Langfuse is in our catalog but the editorial team has not written a hands-on review yet. The verdict and scores below are auto-derived from public data (user ratings, pricing, feature coverage) rather than first-person testing.
See the 210+ tools we have hand-tested →Editor's verdict
Langfuse is one of the strongest freemium tools in its category, rated 4.7/5 by 75 users. Best for llm application observability and prompt management with version control. Standout: open-source self-hosted is free forever. Watch out: setup more involved than proxy approach (Helicone). Has a free tier; paid plans start at $59/mo.
About Langfuse
Langfuse is the open-source LLM observability platform that became the standard tracing layer for AI applications built with LangChain, LlamaIndex, and direct OpenAI or Anthropic APIs in 2024-2025. The product captures every LLM call (prompts, responses, latency, cost) into a searchable trace UI, surfaces quality regressions across model versions, and runs evaluation suites against production traces. Open-source self-hosted is free; Langfuse Cloud has a generous free tier (50K observations per month) and paid tiers from 59 USD per month. Vs Helicone: Langfuse has stronger LangChain native integration and richer evaluation tooling; Helicone has simpler setup as a drop-in proxy and stronger cost-tracking. Y Combinator plus Series A 2024, used by Khan Academy, Samsara, and thousands of indie AI developers.
Pros & Cons
Pros
- ✓Open-source self-hosted is free forever
- ✓Strong LangChain and LlamaIndex native integration
- ✓Generous free Cloud tier (50K observations/month)
- ✓Built-in evaluation suite for production traces
- ✓Y Combinator + Series A trajectory
Cons
- ✗Setup more involved than proxy approach (Helicone)
- ✗Smaller customer base than older observability tools
- ✗Self-host requires DevOps to maintain
- ✗Community evaluation library still maturing
Best Use Cases
- →LLM application observability
- →Prompt management with version control
- →Production trace debugging
- →LLM cost tracking and analysis
- →AI application evaluation suites
Categories
Langfuse Preview
Live screenshot of Langfuse homepage. Visit the site ↗
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Pricing
Free$0 / mo
ProFrom $59 / mo
Pricing verified May 2026. Verify current pricing on the official site before purchase.
Try Langfuse Free →Trust Stack
How we rank →Editorial Score
4.5/5Hands-on testing across 7 criteria
External Aggregate
4.7/575 aggregate ratings from G2, Capterra, Product Hunt
User Reviews on MytheAi
0While reviews build here, see 75 aggregate ratings from G2, Capterra, Product Hunt above. Add yours →
Pricing Verified
May 2026Re-verified against the official site every 90 days
Editorial score is independent of External Aggregate. User reviews appear separately below.
Editorial Scoring
How Langfuse scores on our 7-criteria framework
Criterion
Weight
Score
Output Quality
Accuracy, polish, and usefulness of what the tool produces.
25%
4.5
Ease of Use
Onboarding friction, UI clarity, time to first useful result.
15%
4
Pricing Value
Output per dollar at the realistic monthly cost for a typical user.
15%
5
Feature Depth
Breadth and maturity of capabilities relative to category leaders.
15%
4.5
Integrations
Native integrations, API quality, and ecosystem coverage.
10%
4.5
Reliability
Uptime, output consistency, and battle-test through scale.
10%
4.5
Trajectory
Recent product velocity and momentum vs the category.
10%
5
Overall editorial score
100%
4.55/5
Scores are editorial assessments based on hands-on testing and verified user data. They do not reflect affiliate relationships. How we score.
Verify Independently
Cross-check Langfuse on third-party platforms
We do not ask you to take our word for it. Each link below opens the same product on an independent review or launch platform. Use these for a second opinion before deciding.
G2 ↗
Verified user reviews and rating
Capterra ↗
Software reviews and screenshots
Product Hunt ↗
Launch history and community vote
Trustpilot ↗
Customer-experience reviews
Official site ↗
Pricing and feature claims, source of record
Search-result links are programmatic - if a vendor changes their listing slug the link still resolves to the platform's search for Langfuse. We re-verify our own ratings on a 90-day cadence.
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Langfuse on MytheAi
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Try Langfuse →Frequently Asked Questions
Is Langfuse free?▼
Langfuse offers a free tier with limited features. Paid plans start from $59/month.
What is Langfuse best for?▼
Langfuse is best suited for: LLM application observability, Prompt management with version control, Production trace debugging.
How does Langfuse compare to alternatives?▼
Langfuse holds a rating of 4.7/5 from 75 reviews. Browse our comparison pages to see detailed side-by-side breakdowns against similar tools.
What does Langfuse cost?▼
Langfuse starts at $59/month and includes a free tier. Pricing may vary by plan and region - always verify on the official site.
Reviewed by
MytheAi Team
Editorial Team
The MytheAi editorial team tracks and reviews AI and SaaS tools. We built MytheAi out of frustration with pay-to-rank listicles and SEO-driven directories that prioritize ad revenue over honest guidance. Hands-on testing across 590+ tools to date.
Langfuse Review (2026): Is It Worth It?
Langfuse is a freemium tool with a free tier available. It holds a rating of 4.7/5 based on 75 reviews. Currently trending among users.
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Free tier available