Langfuse vs Opik

In short

• Both: Choice of models, API, Official SDKs, Traces and evaluates
• Only Langfuse states: Command line, Self-hosted
• Only Opik states: Agent that edits files, Knows the whole codebase

Langfuse

Langfuse traces, evaluates, and monitors AI agents and LLM applications, with prompt management, experiments, and cost analytics.

Plans

Hobby

Free

• 50k units / month included
• 30 days data access
• 2 users
• Community support via GitHub
• All platform features (with limits)

Core

• $29 / month
• $8/100k units

• 100k units / month included
• 90 days data access
• Unlimited users
• In-app support
• Everything in Hobby

Pro

• $199 / month
• $8/100k units

• 100k units / month included
• 3 years data access
• Data retention management
• Unlimited annotation queues
• High rate limits
• Prioritized in-app support

Enterprise

• $2499 / month
• $8/100k units

• 100k units / month included
• Audit Logs
• SCIM API
• Custom rate limits
• Uptime SLA
• Named lead support engineer

Prices checked 2026-09-25 on the maker’s page.

Capabilities

• Command line — “Langfuse CLI Full API access from the terminal for agent workflows, scripts, and CI/CD.” source
• Choice of models — “Test prompts on real production inputs and compare models side-by-side.” source
• Self-hosted — “Self-host at scale” source
• API — “REST APIs for everything” source
• Official SDKs — “Best-in-class SDKs: Native SDKs for Python and JavaScript” source
• Traces and evaluates — “Trace, evaluate, and improve AI agents with one open platform.” source

Security

• SOC 2 Type II — “The production service is based on the same open-source Langfuse codebase, is covered by SOC 2 Type II and ISO 27001 audits, and undergoes annual third-party penetration tests.” source
• SOC 2 — “We take active steps to demonstrate our commitment to data security and privacy such as annual SOC2 Type 2 and ISO27001 audits as well as External Penetration Tests.” source
• ISO 27001 — “The production service is based on the same open-source Langfuse codebase, is covered by SOC 2 Type II and ISO 27001 audits, and undergoes annual third-party penetration tests.” source
• GDPR — “Langfuse is GDPR compliant, and offers data retention, data masking and data deletion capabilities to manage the processing of personal data .” source
• HIPAA — “We offer a DPA , provide a HIPAA-ready region , and adhere to our Privacy Policy .” source
• Data kept in the EU — “Langfuse Cloud – fully-managed SaaS (multi-tenant) with US, EU, Japan, and HIPAA data regions” source

Latest updates

• 2026-08-17 Langfuse v4 is live: faster at scale, with more ways to search, monitor, and evaluate

  Initial table loads drop from seconds to milliseconds, and dashboards over longer time ranges load at least 10x faster.

Opik

Opik is an open-source platform for tracing, evaluating, testing, and monitoring LLM applications and AI agents.

Plans

Open Source

Free

• Full AI observability & agent testing feature set
• True OSS: same codebase as the hosted versions
• Agent tracing & analysis
• Test Suites & assertions
• Agent Playground

Free Cloud

Free

• Up to 10 team members
• 25k spans per month
• 60-day data retention
• Agent tracing & analysis
• Test Suites & assertions
• Agent Playground

Pro Cloud

• $19 Per month

• Up to 50 team members
• 100k spans per month
• 60-day data retention
• Customizable monthly span limits
• Customizable data retention periods

Enterprise

Price on request

• Unlimited team members
• Custom usage plans
• Flexible deployments
• Service accounts and view-only users
• Single sign-on
• Dedicated support and SLAs

Prices checked 2026-09-24 on the maker’s page.

Capabilities

• Agent that edits files — “Opik’s powerful coding assistant analyzes your traces, suggests fixes, and implements them in your development code — with built-in version control and regression testing.” source
• Knows the whole codebase — “Configure it to let Ollie read your agent codebase and write fixes directly to it.” source
• Choice of models — “If you’re not ready to log traces yet, we recommend trying out the prompt playground to experiment with user prompts and system prompts and compare models side by side, with no setup steps required.” source
• API — “Opik’s REST API and complete Python client can be used with both the Open-Source platform and Opik Cloud” source
• Official SDKs — “SDKs (Python, TypeScript)” source
• Traces and evaluates — “Opik logs every step your agent takes, from user interactions to context retrieval and tool calls — with automated eval workflows to find and fix errors across development, testing, and production.” source

Security

• SOC 2 Type II — “SOC 2 Type 2” source
• SOC 2 — “SOC 2 Type 2” source
• ISO 27001 — “ISO/IEC 27001:2022” source

Latest updates

• 2026-09-24 2.2.81-6780 (2.2.81-6780)

  Provision the extended free-form SQL ClickHouse user.

• 2026-09-24 2.2.80 (2.2.80)
• 2026-09-24 2.2.79 (2.2.79)