head to head · open source
Grafana Loki vs Logfire
Grafana Loki has 29,124 GitHub stars, 4,174 forks, 1,620 open issues and last shipped yesterday. Logfire has 4,535 stars, 354 forks, 191 open issues and last shipped yesterday. Grafana Loki leads on adoption by 542% (29,124 vs 4,535 stars). Grafana Loki is written in Go under AGPL-3.0; Logfire is written in Python under MIT. Grafana Loki has attracted 14% as many forks as stars, Logfire 8%. Grafana Loki was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (logging), 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
| Grafana Loki | Logfire | |
|---|---|---|
| GitHub stars | ★ 29K | ★ 4.5K |
| License | AGPL-3.0 | MIT |
| Written in | Go | Python |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 4.2K | ⑂ 354 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Grafana Loki if
- You weight community size — 29K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick Logfire if
- You want the Logfire feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and Logfire fits your workflow better
About Grafana Loki
Loki: like Prometheus, but for logs. Loki is a horizontally scalable, highly available, multi tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate. It does not index the contents of the logs, but rather a set of labels for each log stream. Compared to other log aggregation systems, Loki: does not do full text indexing on logs. By storing compressed, unstructured logs and only indexing metadata, Loki is simpler to operate and cheaper to run. indexes and groups log streams using the same labels you’re already using with Prometheus, enabling you to…
read the full Grafana Loki overview →
About Logfire
Pydantic Logfire: Know more. Build faster. From the team behind Pydantic Validation, Pydantic Logfire is an observability platform built on the same belief as our open source library: that the most powerful tools can be easy to use. What sets Logfire apart: Simple and Powerful: Logfire's dashboard is simple relative to the power it provides, ensuring your entire engineering team will actually use it. Python centric Insights: From rich display of Python objects, to event loop telemetry, to profiling Python code and database queries, Logfire gives you unparalleled visibility into your Python application's…
read the full Logfire overview →
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Frequently asked questions
Is Grafana Loki or Logfire more popular?
Grafana Loki has 29,124 GitHub stars and Logfire has 4,535. Grafana Loki has the larger community by that measure.
Are Grafana Loki and Logfire free?
Both are open source. Grafana Loki is licensed under AGPL-3.0 and Logfire under MIT. Neither carries a licence fee.
What is the difference between Grafana Loki and Logfire?
Grafana Loki is written in Go and Logfire 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, Grafana Loki or Logfire?
Choose Grafana Loki if you want the larger community (29,124 stars) or its AGPL-3.0 licence terms. Choose Logfire if its feature set, stack or MIT licence fits better. Both are self-hostable.