ClickHouse acquired Langfuse (announced 16 Jan 2026); Langfuse stays open source. Source
| Hard budgets (team / key / user) (scored) | n/a Observability only, not in the request path |
|---|---|
| Rate & spend limits (scored) | n/a Not in the request path |
| Cost attribution / chargeback tags (scored) | yes Cost and tokens aggregated by user and tags; Metrics API |
| FOCUS export (scored) | unknown No FOCUS export found |
| EU data residency option (scored) | yes EU cloud region (AWS eu-west-1, Ireland) |
| Public pricing (scored) | yes Source: langfuse.com/pricing |
| Open source | yes MIT, except ee/ directories |
| Hosting | Both Langfuse Cloud or self-host Source: langfuse.com/pricing |
| Supported providers / models | n/a SDK/OpenTelemetry instrumentation, not a proxy |
| Caching | n/a |
| Pricing model | Open source + cloud tiers Source: langfuse.com/pricing |
| Public price points | Cloud Core $29/mo, Pro $199/mo, each incl. 100k units; overage from $8 per 100k units; self-host free Source: langfuse.com/pricing |
Not verified yet: FOCUS export. "unknown" means we could not confirm it in public sources. Vendors can send evidence to update a cell; see get verified. Verification never changes the scoring rules.