OpenObserve vs Resend — Pricing, Plans, and Verified Costs (2026)
Resend starts at $20/mo. OpenObserve uses custom pricing — request a quote to compare.
See price history: OpenObserve · Resend
How pricing works
These two tools don't price the same way, so the headline numbers below aren't directly comparable until you plug in your own volume.
- OpenObserve (Per Usage) — OpenObserve bills purely on usage — $0.50/GB ingest + $0.01/GB query (30% off annual, no per-seat fees). There is no fixed per-seat fee, so the monthly cost depends entirely on how much you consume.
- Resend (Hybrid) — Resend is hybrid: a fixed subscription from $20/mo plus metered usage on top (Emails/month). Your real bill moves with volume, not seat count.
Per-minute, per-credit and per-token rates exclude any downstream model, speech or telephony costs unless the vendor states otherwise.
OpenObserve is a Datadog/Splunk/New Relic alternative positioned on transparent pay-as-you-go pricing with no per-seat or per-host fees. Cloud PAYG: $0.50/GB ingestion + $0.01/GB query (30% off with annual commit). Includes 15-month metrics retention + 30-day non-metrics retention default. Enterprise adds SSO/RBAC, AI SRE agent, BYO bucket infinite retention. Self-hosted OSS is free; Self-hosted Enterprise free up to 50GB/day.
Modern email API positioned as the developer-first alternative to SendGrid and Postmark. Distinctive for React email templates (write HTML emails as React components) and for its founders' background at AWS + Vercel — the API design shows it. Priced free-$1200/mo (3K to 1M emails/mo). Popular with early-stage SaaS teams shipping transactional email and product updates. Series A in 2024.
All plans compared
| Tier role | Plan | OpenObserve monthly | OpenObserve annual | Resend monthly | Resend annual |
|---|---|---|---|---|---|
| Free / starter | Cloud Professional (PAYG) / Free | Free | Free | Free | Free |
| Entry paid | — / Pro | — | — | $20 | $20 |
| Pro / power | — / Scale | — | — | $90 | $90 |
| Enterprise | Cloud Enterprise / Enterprise | Custom | Custom | Custom | Custom |
Tier names differ across vendors. Rows are aligned by tier role, not name. Full tier structures on each tool's page.
What each is best for
OpenObserve is worth it if… OpenObserve is ideal for teams migrating off Datadog, Splunk, or New Relic who want radically transparent pay-per-GB pricing with no seat fees. Best if your telemetry cost is dominated by log and metric volume rather than user count.
Resend is worth it if… developers building transactional email (welcome emails, password resets, notifications) who want React Email templates and clean API — particularly if SendGrid/Postmark feel too enterprise-focused. Free tier covers 3K emails/mo; Pro adds more sends and domains; Scale for high-volume.
Bottom line: Choose based on how you want to pay — OpenObserve is per usage, Resend is hybrid.
Choose OpenObserve over Resend if…
Choose OpenObserve if…
- You want to pay only for actual usage (per usage, a free entry tier).
- You match the profile OpenObserve is built for: ideal for teams migrating off Datadog, Splunk, or New Relic who want radically transparent pay-per-GB pricing with no seat fees.
- You need a general-purpose developer & infrastructure option rather than a vertical-specific one.
Choose Resend if…
- You're fine with a base subscription plus metered usage on top (from $20/mo).
- You match the profile Resend is built for: developers building transactional email (welcome emails, password resets, notifications) who want React Email templates and clean API — particularly if SendGrid/Postmark feel too enterprise-focused.
- You need a general-purpose developer & infrastructure option rather than a vertical-specific one.
At a glance
| OpenObserve | Resend | |
|---|---|---|
| Free plan | Yes | Yes |
| Entry price | Free | $20/mo |
| Enterprise available | Yes | Yes |
| Pricing model | Per Usage | Hybrid |
| Verification | Pricing under review | Checked October 3, 2026 |
| Full pricing | View full pricing | View full pricing |
Pricing last verified October 3, 2026. Verification cadence varies by tool; check each tool page.