True cost comparison — not just what the pricing page says
Quick Verdict
Amplitude saves you 5%
Best for Amplitude
Product analytics platform for digital products. Free for 50K monthly tracked users, then usage-base
Best for Datadog
Cloud monitoring and observability platform. Free for 5 hosts, then per-host pricing from $15-$23/ho
Product analytics platform for digital products. Free for 50K monthly tracked us...
Advertised
$0
/month
True Cost
$1000
/month (typical)
Opaque Growth Plan Pricing
Growth plan pricing is custom and based on monthly tracked users (MTUs). Estimates range from $500-$...
Feature Flags & Experiments Add-On
Amplitude Experiment (A/B testing, feature flags) is a separate product with its own pricing. Not in...
CDP Add-On Costs
Amplitude CDP (Customer Data Platform) for data unification and audience syncing is priced separatel...
Cloud monitoring and observability platform. Free for 5 hosts, then per-host pri...
Advertised
$0
/month
True Cost
$505
/month (typical)
Log Management Per-GB Ingestion
Log management costs $0.10/GB ingested per month. A mid-size app generating 500GB/mo of logs = $50/m...
APM Per-Host Add-On
Application Performance Monitoring is a separate product at $31/host/mo (APM) or $35/host/mo (APM + ...
Custom Metrics Overage
Each plan includes 100 custom metrics. Additional custom metrics cost $0.05/metric/mo. Apps with det...
Amplitude advertises $0/mo. Datadog advertises $0/mo.
Amplitude has 3 documented hidden fees. Datadog has 3.
Amplitude confidence: 70%. Datadog confidence: 75%.
| Metric | Amplitude | Datadog | Winner |
|---|---|---|---|
| Advertised Price | $0/mo | $0/mo | Amplitude |
| True Monthly Cost | $1000/mo | $505/mo | Datadog |
| Hidden Fee Total | +$1000/mo | +$505/mo | Datadog |
| # Hidden Fees | 3 | 3 | Amplitude |
| Confidence Score | 70% | 75% | Datadog |
| Pricing Tiers | 3 | 3 | — |
| Affiliate Program | None | None | — |
Amplitude advertises $0/mo and Datadog advertises $0/mo. However, when you include hidden fees, Amplitude has 3 documented hidden fees adding +$1000/mo, while Datadog has 3 hidden fees adding +$505/mo. Based on true cost, Amplitude is typically 5% cheaper.
Amplitude has 3 documented hidden fees: Opaque Growth Plan Pricing, Feature Flags & Experiments Add-On, CDP Add-On Costs. These add approximately +$1000/mo on top of the $0/mo advertised price.
Datadog has 3 documented hidden fees: Log Management Per-GB Ingestion, APM Per-Host Add-On, Custom Metrics Overage. These add approximately +$505/mo on top of the $0/mo advertised price.
Choose Amplitude if: Product analytics platform for digital products. Free for 50K monthly tracked users, then usage-base. Choose Datadog if: Cloud monitoring and observability platform. Free for 5 hosts, then per-host pricing from $15-$23/ho. The right choice depends on your team size, usage volume, and which features you need most.
This comparison is based on manual research of official pricing pages, terms of service, and user reports. Amplitude data has a 70% confidence score and Datadog has 75%. Prices were last verified in April 2026. For the most accurate estimate, enter your specific usage in our calculator.
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