Amplitude vs Portkey
Digital analytics + experimentation + CDP
vs. Enterprise AI gateway + observability + guardrails + prompt mgmt
Pricing tiers
Amplitude
Starter (Free)
10K Monthly Tracked Users, 10M events/mo. Session Replay + unlimited feature flags + Web Experimentation + AI Feedback included.
Free
Plus
$49/mo (annual). Up to 300K MTUs + 25M events. Unlimited product analytics, behavioral cohorts, feature tagging, custom audiences.
$49/mo
Growth
Custom. Causal insights, Feature Experimentation, real-time streaming, predictive audiences.
Custom
Enterprise
Custom. Cross-product analysis, advanced data controls, mutual exclusion groups, multi-armed bandit.
Custom
Portkey
Developer (Free)
Free forever. 10k logs/month. Universal API + key management. 3 prompt templates. Basic observability.
Free
Gateway (OSS)
MIT-licensed gateway only (no observability UI). Self-host for routing/fallbacks.
$0 base (usage-based)
Production
$49/month. 100k logs ($9 per additional 100k). Fallbacks, load balancing, retries, semantic caching. Unlimited prompts. RBAC.
$49/mo
Enterprise
Custom. 10M+ logs/month. Custom guardrails, advanced evals, SSO, budget controls, VPC + on-prem, SOC2, HIPAA, GDPR.
Custom
Free-tier quotas head-to-head
Comparing starter on Amplitude vs free on Portkey.
| Metric | Amplitude | Portkey |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
Amplitude · 13 features
- AI Feedback (Asking) — Natural language questions over your Amplitude data.
- Amplitude CDP — Customer Data Platform — identify, segment, sync to 150+ destinations.
- Causal Insights — AI identifies why a metric changed — root cause.
- Cross-Product Analysis — Analyze across multiple apps/products in the same org.
- Data Governance — Taxonomies, schemas, approvals, category management.
- Data Warehouse Sync — Sync data to/from Snowflake, BigQuery, Redshift, Databricks.
- Feature Experimentation — Server-side / SDK-level experiments. Growth+.
- Feature Flags — Targeting rules + rollouts. Unlimited in Starter.
- North Star Metric — Pre-built dashboards for key metric tracking.
- Predictive Audiences — ML-based forecasting of user behavior.
- Product Analytics — Core events + funnels + retention + segmentation.
- Session Replay — Pixel-perfect user session recording + privacy masking.
- Web Experimentation — A/B test visual changes on your site without deploy.
Portkey · 18 features
- AI Gateway — Unified OpenAI-compatible API to 250+ LLMs.
- Alerts — Thresholds on latency, error rate, cost, usage.
- Budget Controls — Per-key + per-team spending limits.
- Evaluations — Built-in evaluator templates + custom.
- Fallbacks — Config-driven provider fallback chains.
- Guardrails — Pre/post processors for safety + compliance.
- Load Balancing — Round-robin, weighted, least-latency across providers.
- MCP Support — Use MCP servers as tools through gateway.
- Observability — Logs, traces, feedback, alerts, cost tracking.
- OSS Gateway — Open-source gateway (portkey-ai/gateway).
- Prompt Library — Shared prompt library + public marketplace.
- Prompt Templates — Version + test + collaborate on prompts.
- Retries — Configurable retry policies per route.
- Role-Based Access Control — Team permissions on prompts + keys.
- Semantic Caching — Vector-based cache on query meaning.
- Simple Caching — Exact-match cache.
- Virtual Keys — Per-app keys with budget + rate limits + permissions.
- VPC Deployment (Ent) — Deploy in your own VPC for compliance.
Developer interfaces
| Kind | Amplitude | Portkey |
|---|---|---|
| CLI | — | Portkey CLI |
| SDK | amplitude-analytics-python, @amplitude/analytics-react-native, amplitude-android, amplitude-js / browser-sdk, amplitude-node, AmplitudeSwift (iOS) | portkey-ai (Node), portkey-ai (Python) |
| REST | Amplitude HTTP API v2, Batch Event API, Export API | Portkey API (OpenAI-compat) |
| MCP | — | Portkey MCP |
| OTHER | Data Destinations (webhooks) | Portkey Dashboard |
Staxly is an independent catalog of developer platforms. Outbound links to Amplitude and Portkey are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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