Langfuse vs Bunny.net
Open-source LLM engineering platform — observability, prompts, evals
vs. Ridiculously affordable CDN + video streaming + edge compute
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
Bunny.net
CDN Volume — 1-2 PB
$0.002/GB at 1-2 PB volume.
$0/mo
CDN Volume — First 500 TB
$0.005/GB Volume Network (10 PoPs) for high-volume.
$0/mo
CDN Standard — EU/NA
$0.01/GB. 119 PoPs Standard Network in Europe + North America.
$0/mo
CDN Standard — Asia + Oceania
$0.03/GB.
$0/mo
CDN Standard — South America
$0.045/GB.
$0/mo
CDN Standard — ME/Africa
$0.06/GB.
$0/mo
Monthly Minimum
Minimum $1/month.
$1/mo
Free-tier quotas head-to-head
Comparing hobby on Langfuse vs volume-1pb-2pb on Bunny.net.
| Metric | Langfuse | Bunny.net |
|---|---|---|
| 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.
Bunny.net · 14 features
- Bunny CDN — Standard + Volume networks. 119 PoPs globally.
- Bunny Database — Edge-distributed key-value DB.
- Bunny DNS — Free anycast DNS.
- Bunny Optimizer — On-the-fly image + video optimization.
- Bunny Shield (WAF + DDoS) — DDoS protection + WAF + bot defense.
- Bunny Stream — Video hosting + transcoding + HLS delivery.
- Custom Hostname — Use yourdomain.com with CDN.
- Edge Scripting — JavaScript at the edge (like CF Workers).
- Edge Storage — Object storage replicated across regions.
- Free Let's Encrypt SSL — Auto cert issuance/renewal.
- Hot-linking Protection — Block unauthorized embeds.
- Instant Purge — Global invalidation.
- Magic Containers — Serverless containers at edge.
- Real-Time Analytics — Per-zone + per-country usage stats.
Developer interfaces
| Kind | Langfuse | Bunny.net |
|---|---|---|
| SDK | langfuse-js, langfuse-python | bunnycdn.js (community) |
| REST | Langfuse REST API | Bunny.net API |
| MCP | Langfuse MCP Server | — |
| OTHER | Langfuse Dashboard, OpenTelemetry endpoint | Bunny Dashboard, CDN HTTP base URL, Edge Scripting |
Staxly is an independent catalog of developer platforms. Outbound links to Langfuse and Bunny.net are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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