TLDR Tech / Data
Scaling Prometheus in 2026: The Complete Comparison Guide
Prometheus-compatible long-term storage has matured into clear options: VictoriaMetrics for most teams needing 4-5x less RAM and low operational burden, Thanos for the lowest-friction migration from existing Prometheus, OpenObserve for full-stack observability at lower cost, GreptimeDB for unified SQL-first metrics/logs/traces, and Mimir for large enterprises with 500+ developers and dedicated SREs. The key decision factor is not just infrastructure cost but “Ops Tax”.
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