Langfuse vs CircleCI
Open-source LLM engineering platform — observability, prompts, evals
vs. Fast, configurable CI/CD with Docker, ARM, GPU runners and orbs
Pricing tiers
Langfuse
Hobby (Cloud Free)
Free. 50k units/month included. 30 days data access. 2 users. Community support.
Free
Self-Hosted (OSS)
MIT-licensed. Docker Compose or Kubernetes deployment. Unlimited.
$0 base (usage-based)
Core
$29/month. 100k units included ($8 per 100k overage). 90 days retention. Unlimited users. In-app support.
$29/mo
Pro
$199/month. 100k units included + same overage. 3 YEARS retention. Unlimited annotation queues. High rate limits.
$199/mo
Teams Add-on
+$300/month. Adds Enterprise SSO + fine-grained RBAC + dedicated Slack support to Pro.
$300/mo
Enterprise
$2,499/month. Everything + custom rate limits, uptime SLA, dedicated support engineer. Yearly options.
$2499/mo
CircleCI
Free
$0. 6,000 build minutes/mo (Linux medium). 30 users. Unlimited projects.
Free
Performance
$15/mo (3 users). Credit-based: 80K-240K credits/mo bundles. More concurrency.
$15/mo
Scale
$2,000/mo+ (custom). High concurrency, self-hosted runner support, SSO.
$2000/mo
CircleCI Server
Custom. On-prem deployment of CircleCI. Enterprise only.
Custom
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs free on CircleCI.
| Metric | Langfuse | CircleCI |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Langfuse · 16 features
- Annotation Queues — Human reviewers rate traces. Unlimited on Pro+.
- Dashboards — Aggregate metrics, cost, quality across projects.
- Datasets — Curate test sets from production traces. Run experiments.
- EU Cloud Region — GDPR-compliant hosting in EU.
- Evaluations — LLM-as-judge, manual scores, custom model-graded evaluators.
- LLM Cost Tracking — Automatic cost calculation per provider/model.
- OpenTelemetry Native — OTel SDK → Langfuse endpoint works out of box.
- Playground — Test prompts + models + variables live.
- Prompt Management — Version, tag, label prompts. Reference from code by label.
- Public API — Full REST API for ingest, query, prompt management.
- Python @observe decorator — One-line decorator to trace any function.
- Self-Hosting — Docker Compose + k8s Helm chart.
- Sessions — Group related traces (conversations, agent runs).
- Tracing — Capture every LLM call, tool call, nested span with inputs/outputs/cost.
- Users Tracking — Segment traces by user ID, track per-user cost.
- Webhooks — Subscribe to trace completion events.
CircleCI · 17 features
- ARM + GPU Runners — ARM64 + T4 GPU resource classes.
- .circleci/config.yml — Single source of truth (YAML 2.1).
- Contexts — Org-scoped shared env vars.
- Deploy Markers — Track deployments + rollback.
- Docker Layer Caching — Reuse Docker layers.
- Dynamic Config — Generate config based on changed paths.
- Manual Approval — Gate workflows with manual step.
- Matrix Jobs — Parameterized parallel jobs.
- Orbs — Packaged reusable jobs + commands.
- Parallelism — Split a job across N parallel containers.
- Rerun with SSH — SSH into failed job.
- Restricted Contexts — RBAC for secrets.
- Scheduled Pipelines — Cron-triggered runs.
- Self-Hosted Runners — On your infra.
- Test Insights — Flaky test detection + trends.
- Test Splitting — By timings, filenames, classnames.
- Workflows (DAG) — Fan out, fan in, conditional.
Developer interfaces
| Kind | Langfuse | CircleCI |
|---|---|---|
| CLI | — | circleci CLI |
| SDK | langfuse-js, langfuse-python | — |
| REST | Langfuse REST API | CircleCI REST API v2 |
| MCP | Langfuse MCP Server | — |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | .circleci/config.yml, CircleCI Orbs Registry, CircleCI Webhooks, CircleCI Web UI, Self-Hosted Runner |
Staxly is an independent catalog of developer platforms. Outbound links to Langfuse and CircleCI are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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