Tool Comparison · 2026 Edition

New Relic vs Splunk: APM-First or Log-First Observability?

New Relic is an APM-first platform with consumption pricing. Splunk is a log-and-SIEM-first platform. Both offer the other category, but each has a clear center of gravity. Here's how to choose.

TL;DR

Key takeaways

  • New Relic's core is APM; it added logs, infra, and NRQL as it matured. Consumption pricing (per GB) means your bill tracks telemetry volume.
  • Splunk's core is log search + SIEM; it added APM via SignalFx. Pricing is per-GB-ingested or workload-based.
  • If your biggest pain is 'why is my app slow?', New Relic is a better starting point.
  • If your biggest pain is 'what happened across these 20 TB of logs for the past 90 days?', Splunk wins.

APM depth

New Relic APM has 15+ language agents, distributed tracing, service maps, and a strong developer experience.

Splunk APM uses NoSample tracing — 100% of transactions ingested — which is a differentiator for debugging rare tail latencies.

For most teams, New Relic APM feels more polished day-to-day. For high-volume systems where sampling bias matters, Splunk APM has an edge.

Logs and SIEM

Splunk's Search Processing Language (SPL) is the industry gold standard for log analytics; Splunk Enterprise Security (ES) is the leader in SIEM.

New Relic Logs is competent — tied into the APM telemetry graph — but not a Splunk ES replacement.

If your SOC runs on Splunk, you cannot replace it with New Relic without a significant capability drop.

Pricing

New Relic: $0.30/GB ingested, 100 GB free, $49–$549/full-user/month. Predictable per-GB; unpredictable when telemetry volume spikes.

Splunk: Workload pricing (compute-based) replaces traditional per-GB-ingested-per-day. Still enterprise-tier.

For low-volume workloads, New Relic is dramatically cheaper. At enterprise log scale, Splunk has specialized architecture that justifies its price.

Atatus as the middle path

Atatus provides APM + logs + infra + RUM + SIEM-light at flat per-host pricing — no per-GB meter.

For most mid-market and startup teams, Atatus covers both the 'why slow?' and 'what happened?' use cases at a fraction of the combined cost.

On-prem option and OTel-native ingest match or exceed either platform's flexibility.

Side-by-side comparison

New Relic

Pros

  • Strong APM
  • 100 GB/month free
  • NRQL for queries
  • Consumption pricing

Cons

  • Unpredictable at scale
  • Weaker SIEM
  • Logs cost per GB

Pricing: $0.30/GB + per-user

Best for: APM-first teams, variable volume

Splunk

Pros

  • SPL for log search
  • Industry-leading SIEM
  • Massive retention
  • NoSample APM

Cons

  • Expensive
  • APM less polished than New Relic
  • Steep learning curve

Pricing: Workload / per-GB ingest

Best for: SOC + compliance + logs scale

Atatus

Pros

  • Flat per-host pricing
  • APM + logs + infra + RUM + SIEM-light
  • OTel-native
  • On-prem option

Cons

  • No Splunk-grade SIEM depth

Pricing: Flat per-host, all signals included

Best for: Mid-market needing both APM and logs

Verdict

New Relic is the pick if APM depth and generous onboarding matter more than log analytics. Splunk is the pick if your team lives in SPL and runs a SOC. Atatus is the pick if you want both — minus the enterprise price tag.

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