Traceloop
Observability & Evals · Free + paid
OpenTelemetry-based LLM observability
At a glance
- Made by
- Traceloop
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- Web, API
- Open source
- Apache-2.0 (OpenLLMetry SDK)
- GitHub
- 7,492 stars · Apache-2.0
What is Traceloop?
Traceloop automatically monitors the quality of LLM outputs and helps you debug and test model and prompt changes. It is based on OpenTelemetry: you install OpenLLMetry, an open-source SDK, in your app, or use Traceloop Hub as a proxy for LLM calls. It automatically checks real data with built-in metrics such as faithfulness, relevance, and safety, and you can add your own annotations to train custom evaluators. It can be deployed in cloud, on-premises, and air-gapped environments.
- Track prompts, responses, and latency in real time with one line of code
- Automatically run built-in quality metrics for faithfulness, relevance, and safety
- Train custom evaluators with example annotations
- Automatic evaluation on every PR and in real time (CI/CD integration)
- Real-time model quality alerts (monitors)
- Prompt management
- OpenLLMetry SDK (Python, TypeScript, Go, Ruby) and Hub gateway
- On-premises and air-gapped deployment
Who uses Traceloop and for what
- Catch model quality degradation (drift) before production
- Roll out model and prompt changes gradually
- Debug and replay production issues in your IDE
Pricing
What you get for free — Yes (Free Forever: 50K spans/month, up to 5 seats, 24-hour retention)
| Plan | Price | Main limits |
|---|---|---|
| Free Forever | $0/mo | 50K spans/month, up to 5 seats, 24-hour data retention |
| Enterprise | Contact sales | Contact sales (Let's chat), over 50K spans/month, unlimited seats, custom retention, on-premises option |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Traceloop (alternatives)
Traceloop vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Traceloop | Free + paid | 0 | 5 | Yes | — | No |
| AgentOps | Free + paid | 0 | 5 | Yes | $40/mo | No |
| Helicone | Free | 0 | 5 | Yes | $79/mo | No |
| Langfuse | Free | 0 | 5 | Yes | $29/mo | No |
| Opik | Free | 0 | 5 | Yes | $19/mo | No |
5 of these 5 tools have a free plan. Cheapest paid plan: Opik ($19/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Traceloop on AI Galaxy Map
- One of 27 AI tools in the Observability & Evals field.
- Connected to 5 other tools — #6 in its field.
Frequently asked questions
Can I use Traceloop for free?
Yes (Free Forever: 50K spans/month, up to 5 seats, 24-hour retention). Prices can change, so check the official site before paying.
What AI can I use instead of Traceloop?
Tools that do the same job, such as AgentOps, Helicone, Langfuse, Opik, are connected to it on the map.
Can I use Traceloop in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.