o11y = observability · updated 2026-10-24

The free tier is the product.
We watch it for you.

O11y Watch tracks what you actually get for $0 across 73 monitoring, logging, error-tracking, uptime, on-call and LLM-observability tools — copied from each vendor’s pricing page, with a source link and a weekly diff.

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Why it matters

3

free tiers removed, sunset, or prices raised in 2026 that we logged with a source (UptimeRobot, Lunary, Highlight.io). See the log

+$72/yr

more for UptimeRobot Team on annual billing: $396 → $468 (+18%), detected by our 2026-10-24 diff. Source ↗

8

of 45 verified free tiers cap you at one user or seat. The real paywall is your second engineer.

What lands in your inbox

From: O11y Watch · Subject: O11y Watch #002 — UptimeRobot +18%, Lunary ends free signups

This week’s changes

  • Bugsnag: Free plan now listed as 1 user with 7.5K events and 1M spans per month (we previously recorded "solo users; 7 days retention"). Old snapshot was overwritten, so we cannot confirm whether this is a change or a fuller reading.
  • Uptrace: Cloud free tier stated as 50 GB and 5,000 timeseries per month; self-hosted Community Edition is free with no limits.
  • UptimeRobot: Paid prices rose ~18%: Team $39→$46/mo (monthly) and $33→$39/mo (annual); Scale $83→$98/mo (monthly) and $67→$79/mo (annual); annual Team $396→$468/yr. Free plan unchanged in our snapshot.

Free tier of the week: Axiom

500 GB/mo data loading compute; 10 GB-hours query compute; 25 GB storage; no card

Read the full sample issue →

Placeholder: reader testimonials and subscriber count will appear here once real ones exist. We will not show invented ones.

73vendors tracked
70verified from pricing pages
45verified free tiers
10logged changes

Browse by category

APM & full-stack

14 vendors · 8 verified free

Logs

14 vendors · 3 verified free

Error tracking

10 vendors · 7 verified free

Uptime, cron & status pages

16 vendors · 13 verified free

On-call & incidents

7 vendors · 4 verified free

LLM observability

10 vendors · 9 verified free

Product analytics & replay

2 vendors · 1 verified free

Latest changes

  • · free tier detail
    Bugsnag — Free plan now listed as 1 user with 7.5K events and 1M spans per month (we previously recorded "solo users; 7 days retention"). Old snapshot was overwritten, so we cannot confirm whether this is a change or a fuller reading. source ↗
  • · free tier detail
    Uptrace — Cloud free tier stated as 50 GB and 5,000 timeseries per month; self-hosted Community Edition is free with no limits. source ↗
  • · price increase
    UptimeRobot — Paid prices rose ~18%: Team $39→$46/mo (monthly) and $33→$39/mo (annual); Scale $83→$98/mo (monthly) and $67→$79/mo (annual); annual Team $396→$468/yr. Free plan unchanged in our snapshot. source ↗
  • · free tier removed (new users)
    Lunary — Pricing page: "Payment is required to activate your workspace." Cloud starts at $20/user/mo; existing Free workspaces stay the same. source ↗
  • · source moved
    Bugsink — /pricing/ now returns 404; pricing lives on the homepage. Source URL updated. source ↗
Full change log →

Biggest stated allowances

New Relic

Free tier

100 GB data ingest/mo; 1 free full platform user; unlimited basic users; $0.40/GB beyond

Axiom

Free tier

500 GB/mo data loading compute; 10 GB-hours query compute; 25 GB storage; no card

PostHog

Free tier

1M analytics events, 5K session recordings, 1M feature-flag requests/mo; 1 project; usage stops at limits

Uptrace

Free tier

Cloud: 50 GB and 5,000 timeseries free per month, then from $0.075/GB

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