head to head · open source
Dify vs opik
Dify has 160,251 GitHub stars, 25,336 forks, 1,067 open issues and last shipped yesterday. opik has 23,122 stars, 1,923 forks, 258 open issues and last shipped yesterday. Dify leads on adoption by 593% (160,251 vs 23,122 stars). Dify is written in Python under a custom or non-standard licence; opik is written in Python under Apache-2.0. Dify has attracted 16% as many forks as stars, opik 8%. opik was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Dify | opik | |
|---|---|---|
| GitHub stars | ★ 160K | ★ 23K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 25K | ⑂ 1.9K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Dify if
- You weight community size — 160K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick opik if
- You want the opik feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and opik fits your workflow better
About Dify
Dify Cloud · Self hosting · Documentation · Dify edition overview Dify is an open source LLM app development platform. Its intuitive interface combines AI workflow, RAG pipeline, agent capabilities, model management, observability features (including Opik, Langfuse, and Arize Phoenix) and more, letting you quickly go from prototype to production. Here's a list of the core features: Quick start Before installing Dify, make sure your machine meets the following minimum system requirements: CPU = 2 Core RAM = 4 GiB The easiest way to start the Dify server is through Docker Compose. Before running Dify with the…
About opik
English 简体中文 Español Français Deutsch 日本語 Opik: Open Source LLM Observability, Evaluation & AI Agent Tracing Opik is the open source LLM observability and evaluation platform for AI agent tracing, LLM evaluation, prompt management, and production monitoring. Built by Comet . Apache 2.0 licensed, free to self host the full platform, with 20,000+ GitHub stars. Website • Slack Community • Twitter • Changelog • Documentation Last updated: 2026 07 17 🚀 What is Opik? • ⚡ Quick Start • 📊 How Does Opik Compare? • ❓ FAQ • 🛠️ Opik Server Installation • 💻 Opik Client SDK • 📝 Logging Traces 🧑⚖️ LLM as a Judge • 🔍…
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Frequently asked questions
Is Dify or opik more popular?
Dify has 160,251 GitHub stars and opik has 23,122. Dify has the larger community by that measure.
Are Dify and opik free?
Both are open source. Dify has no licence declared in this registry, and opik is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Dify and opik?
Dify is written in Python and opik in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Dify or opik?
Choose Dify if you want the larger community (160,251 stars) or its Custom / other licence terms. Choose opik if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.