head to head · open source
SigNoz vs cost-xray
SigNoz has 32,525 GitHub stars, 2,576 forks, 1,557 open issues and last shipped yesterday. cost-xray has 5,814 stars, 375 forks, 13 open issues and last shipped 3 days ago. SigNoz leads on adoption by 459% (32,525 vs 5,814 stars). SigNoz is written in TypeScript under a custom or non-standard licence; cost-xray is written in Python under MIT. SigNoz has attracted 8% as many forks as stars, cost-xray 6%. SigNoz was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (observability), 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
| SigNoz | cost-xray | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 5.8K |
| License | Custom / other | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-11-04 | 2026-11-02 |
| Forks | ⑂ 2.6K | ⑂ 375 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SigNoz if
- You weight community size — 33K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick cost-xray if
- You want the cost-xray feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and cost-xray fits your workflow better
About SigNoz
中文 · Deutsch · Português SigNoz is an open source observability platform built on OpenTelemetry. We’re building an enterprise grade alternative to fragmented monitoring stacks, with logs, metrics, traces, alerts, and dashboards in one place. Choose how to run SigNoz SigNoz Cloud (Recommended) Fully managed SigNoz with a 30 day free trial, no credit card required, usage based pricing that starts at $49, and regional data hosting. Start free → Enterprise Enterprise Cloud, BYOC, or Enterprise Self Hosted with compliance, support, custom retention, RBAC, ingestion controls, data residency, and region selection…
read the full SigNoz overview →
About cost-xray
cost xray See what your AI coding agent actually sends to the API — and what each part costs. Most usage tools read local logs. That shows the total cost of a call or session, but it misses the request time context assembled before the model is invoked: system prompts, tool schemas, MCP blocks, tool results, cache reads/writes, and previous thinking blocks. cost xray captures the actual local API traffic for Claude Code and Codex, then attributes tokens and dollars back to the sources inside the request. It shows not just how much a turn cost, but why it cost that much. Home — every session by agent · project ·…
read the full cost-xray overview →
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Frequently asked questions
Is SigNoz or cost-xray more popular?
SigNoz has 32,525 GitHub stars and cost-xray has 5,814. SigNoz has the larger community by that measure.
Are SigNoz and cost-xray free?
Both are open source. SigNoz has no licence declared in this registry, and cost-xray is licensed under MIT. Both are free to self-host.
What is the difference between SigNoz and cost-xray?
SigNoz is written in TypeScript and cost-xray 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, SigNoz or cost-xray?
Choose SigNoz if you want the larger community (32,525 stars) or its Custom / other licence terms. Choose cost-xray if its feature set, stack or MIT licence fits better. Both are self-hostable.