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Langfuse

Trace, evaluate, and improve AI agents with one open platform. Use production data to understand behavior, collaborate on fixes, and ship better quality at lowe

Trace, evaluate, and improve AI agents with one open platform. Use production data to understand behavior, collaborate on fixes, and ship better quality at lower cost and latency.

Monthly visits (est.)

1.6M

SEO score

84/100

Visits over time

Estimated from popularity rank
0500K1M1.5M2MOct 25: 718.3KOct 25Nov 25: 818.1KDec 25: 838.4KDec 25Jan 26: 1.4MFeb 26: 897.1KFeb 26Mar 26: 1MApr 26: 1.1MApr 26May 26: 1.1MJun 26: 1.1MJun 26Jul 26: 1.2MAug 26: 1.4MAug 26Sep 26: 1.9MOct 26: 1.6MOct 26

Whois information

Domainlangfuse.com
RegistrarCloudflare, Inc.
Registrar ID1910
Created04/20/2023
Expires04/20/2027
Updated03/21/2026
Domain statusclient transfer prohibited
DNSSECSigned
Registrant countryRedacted
Name serverschad.ns.cloudflare.comelisabeth.ns.cloudflare.com

Raw whois

{
  "objectClassName": "domain",
  "handle": "2774649761_DOMAIN_COM-VRSN",
  "ldhName": "LANGFUSE.COM",
  "links": [
    {
      "value": "https://rdap.verisign.com/com/v1/domain/langfuse.com",
      "rel": "self",
      "href": "https://rdap.verisign.com/com/v1/domain/langfuse.com",
      "type": "application/rdap+json"
    },
    {
      "value": "https://rdap.verisign.com/com/v1/domain/langfuse.com",
      "rel": "related",
      "href": "https://rdap.cloudflare.com/rdap/v1/domain/LANGFUSE.COM",
      "type": "application/rdap+json"
    }
  ],
  "status": [
    "client transfer prohibited"
  ],
  "entities": [
    {
      "objectClassName": "entity",
      "handle": "1910",
      "roles": [
        "registrar"
      ],
      "links": [
        {
          "href": "http://www.cloudflare.com",
          "type": "text/html",
          "value": "https://rdap.cloudflare.com/rdap/v1/",
          "rel": "about"
        }
      ],
      "publicIds": [
        {
          "type": "IANA Registrar ID",
          "identifier": "1910"
        }
      ],
      "vcardArray": [
        "vcard",
        [
          [
            "version",
            {},
            "text",
            "4.0"
          ],
          [
            "fn",
            {},
            "text",
            "Cloudflare, Inc."
          ]
        ]
      ],
      "entities": [
        {
          "objectClassName": "entity",
          "roles": [
            "abuse"
          ],
          "vcardArray": [
            "vcard",
            [
              [
                "version",
                {},
                "text",
                "4.0"
              ],
              [
                "fn",
                {},
                "text",
                ""
              ],
              [
                "tel",
                {
                  "type": "voice"
                },
                "uri",
                "tel:+1.6503198930"
              ],
              [
                "email",
                {},
                "text",
                "[email protected]"
              ]
            ]
          ]
        }
      ]
    }
  ],
  "events": [
    {
      "eventAction": "registration",
      "eventDate": "2023-04-20T22:55:56Z"
    },
    {
      "eventAction": "expiration",
      "eventDate": "2027-04-20T22:55:56Z"
    },
    {
      "eventAction": "last changed",
      "eventDate": "2026-03-21T04:16:36Z"
    },
    {
      "eventAction": "last update of RDAP database",
      "eventDate": "2026-10-26T13:21:12Z"
    }
  ],
  "secureDNS": {
    "delegationSigned": true,
    "dsData": [
      {
        "keyTag": 2371,
        "algorithm": 13,
        "digestType": 2,
        "digest": "304867FABA6551F85E0309C4FB28DD600FBF1F1C571846C6EF66996B85867431"
      }
    ]
  },
  "nameservers": [
    {
      "objectClassName": "nameserver",
      "ldhName": "CHAD.NS.CLOUDFLARE.COM"
    },
    {
      "objectClassName": "nameserver",
      "ldhName": "ELISABETH.NS.CLOUDFLARE.COM"
    }
  ],
  "rdapConformance": [
    "rdap_level_0",
    "icann_rdap_technical_implementation_guide_1",
    "icann_rdap_response_profile_1"
  ],
  "notices": [
    {
      "title": "Terms of Service",
      "description": [
        "Service subject to Terms of Use."
      ],
      "links": [
        {
          "href": "https://www.verisign.com/domain-names/registration-data-access-protocol/terms-service/index.xhtml",
          "type": "text/html",
          "value": "https://rdap.verisign.com/com/v1/domain/langfuse.com",
          "rel": "terms-of-service"
        }
      ]
    },
    {
      "title": "Status Codes",
      "description": [
        "For more information on domain status codes, please visit https://icann.org/epp"
      ],
      "links": [
        {
          "href": "https://icann.org/epp",
          "type": "text/html",
          "value": "https://rdap.verisign.com/com/v1/domain/langfuse.com",
          "rel": "glossary"
        }
      ]
    },
    {
      "title": "RDDS Inaccuracy Complaint Form",
      "description": [
        "URL of the ICANN RDDS Inaccuracy Complaint Form: https://icann.org/wicf"
      ],
      "links": [
        {
          "href": "https://icann.org/wicf",
          "type": "text/html",
          "value": "https://rdap.verisign.com/com/v1/domain/langfuse.com",
          "rel": "help"
        }
      ]
    }
  ]
}

SEO audit

13 of 16 checks passed

84

SEO score

Response 256 ms · 571 KB

  • Served over HTTPS
  • Title tag present
  • Title length 30 to 60 characters
  • Meta description present
  • Description length 70 to 160 charactersKeep the description between 70 and 160 characters.
  • Exactly one H1 heading
  • Uses H2 sub-headings
  • Canonical URL set
  • Mobile viewport tag
  • Language declared
  • Open Graph tags
  • Twitter card tags
  • Structured data (JSON-LD)Add Organization or Product JSON-LD.
  • Images have alt textAdd alt text to 87 images.
  • At least 300 words of content
  • Responds in under 1.5 seconds
Title (49 characters)
Langfuse: Open Source Agent Evals & Observability
Description (179 characters)
Trace, evaluate, and improve AI agents with one open platform. Use production data to understand behavior, collaborate on fixes, and ship better quality at lower cost and latency.
Headings
1 H1, 9 H2, 22 H3
Words on page
1,279
Links
238 internal, 16 external
Structured data
None

On-page keywords

PhraseTypeMentions
storyread storyreadTwo words4
agent sdkTwo words4
fortune observationsTwo words3
storyread storyread storyreadThree words3
langfuse agent skillThree words3
github com langfuseThree words3
langfuseWord38
productionWord13

Tech stack and pricing

Next.js Google Analytics PostHog Vercel

Langfuse alternatives

See all

About Langfuse

What is Langfuse?

Trace, evaluate, and improve AI agents with one open platform. Use production data to understand behavior, collaborate on fixes, and ship better quality at lowe

How popular is Langfuse?

Langfuse gets an estimated 1.6M visits a month.

What are the best Langfuse alternatives?

Popular alternatives in October 2026 include Cloudflare: Build for the agent era, Search - Microsoft Bing, ChatGPT, Sentry.