Langfuse
Product status: Status not recorded
No lifecycle review is recorded for this listing. Its inclusion in the directory does not confirm current availability; check the vendor before relying on it.
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An AI engineering platform for traces, prompts, datasets and evaluations, with an MIT core, commercial extensions and managed Cloud. No lifecycle review is recorded for this listing. Its inclusion in the directory does not confirm current availability; check the vendor before relying on it.
Product preview
Decision notes
Official-document research
Based on the cited documentation. We did not use the product, purchase a plan, or run quality, speed or reliability tests in this review.
Consider it for
- Teams able to minimize trace data and manage access
Choose another approach if
- Assuming all code is MIT or all traces have zero retention
Pricing and conditions
Documented terms
USD before applicable taxes under standard direct terms; marketplace/reseller orders differ. Hobby: free, 50k units/month, 2 users, 30-day access. Core USD29/month includes 100k units, first overage tier USD8/100k, with graduated volume tiers; Pro USD199/month and Teams add-on USD300/month. Enterprise USD2499/month display requires yearly commitment. Units are not a verified trace/token conversion; 90-day Core/3-year Pro access is not deletion timing. Confirm region, order, credit conditions, actual units and extra model/operations costs.
Pricing source read:
Pricing or terms sourceCode, model and service licensing
MIT covers the core with notices; ee, web/src/ee and worker/src/ee use a commercial Enterprise License. Its development/testing exception is not permission for unrestricted production or distribution. Cloud is contractual access: standard PAYG identifies Langfuse GmbH, with signed-agreement exceptions. Customers retain data; service processing and non-confidential Usage Data rights differ. Cloud AI Data may improve products but not train/fine-tune models, with prospective admin opt-out of improvement. AI feature activation is separate from improvement tracing; configured self-hosted models have their own terms. Retrieve/delete before termination; deleted content's backups/cache/references can take up to 30 days. No model/output clearance or universal zero retention follows from the code license.
Basis and limits of the recorded score
Original 4.6/5 retained; the original scoring worksheet and hands-on evidence are unavailable. This documentation review did not re-score the product.
Overview
Langfuse records application traces and supports prompt management, datasets, evaluator workflows and metrics. The repository separates MIT core directories from commercially licensed Enterprise code.
Cloud, self-hosting and optional AI-powered features have distinct contracts and data flows. Data-access windows shown in a plan are not a blanket deletion promise or evidence of better model quality.
Sources
The factual claims in this review were read from the pages below. Each date is when an editor last opened the source, not when the product changed.
- Vendor documentation Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor pricing page Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
- Vendor documentation Checked 2026-10-15
Pros / Cons
Pros
- Tracing and evaluation in one workflow
- Core can be self-hosted
Cons
- Sensitive prompts can enter traces
- Enterprise code and Cloud are separate commercial rights
Who it's for
Debugging AI application calls
Prompt and dataset evaluation workflows
Bottom line
Compare core, Enterprise and Cloud rights alongside trace retention and access.
Key Features
Tags
Frequently asked questions
Is Langfuse currently available?
No lifecycle review is recorded for this listing. Its inclusion in the directory does not confirm current availability; check the vendor before relying on it.
What is Langfuse?
Langfuse is a AI Platforms tool developed by Langfuse / ClickHouse. An AI engineering platform for traces, prompts, datasets and evaluations, with an MIT core, commercial extensions and managed Cloud.
What costs and terms should I check for Langfuse?
USD before applicable taxes under standard direct terms; marketplace/reseller orders differ. Hobby: free, 50k units/month, 2 users, 30-day access. Core USD29/month includes 100k units, first overage tier USD8/100k, with graduated volume tiers; Pro USD199/month and Teams add-on USD300/month. Enterprise USD2499/month display requires yearly commitment. Units are not a verified trace/token conversion; 90-day Core/3-year Pro access is not deletion timing. Confirm region, order, credit conditions, actual units and extra model/operations costs.
Is Langfuse open source?
MIT covers the core with notices; ee, web/src/ee and worker/src/ee use a commercial Enterprise License. Its development/testing exception is not permission for unrestricted production or distribution. Cloud is contractual access: standard PAYG identifies Langfuse GmbH, with signed-agreement exceptions. Customers retain data; service processing and non-confidential Usage Data rights differ. Cloud AI Data may improve products but not train/fine-tune models, with prospective admin opt-out of improvement. AI feature activation is separate from improvement tracing; configured self-hosted models have their own terms. Retrieve/delete before termination; deleted content's backups/cache/references can take up to 30 days. No model/output clearance or universal zero retention follows from the code license.
What are the best alternatives to Langfuse?
Notable AI Platforms alternatives include Hugging Face, Replicate, Ollama. Browse all 138 tools in our AI Platforms category for a full overview.
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Basic Info
- Pricing
- Freemium
USD before applicable taxes under standard direct terms; marketplace/reseller orders differ. Hobby: free, 50k units/month, 2 users, 30-day access. Core USD29/month includes 100k units, first overage tier USD8/100k, with graduated volume tiers; Pro USD199/month and Teams add-on USD300/month. Enterprise USD2499/month display requires yearly commitment. Units are not a verified trace/token conversion; 90-day Core/3-year Pro access is not deletion timing. Confirm region, order, credit conditions, actual units and extra model/operations costs.
- Editorial score
- ★ 4.6 / 5 How we score
- Platforms
- WebAPISelf-host
- Last verified
- Not recorded
