Verified pricing
WhyLabs pricing
WhyLabs has transitioned to a fully open-source model following its acquisition, though legacy SaaS pricing based on the number of monitored models remains published on the AWS Marketplace.
The entire WhyLabs platform, including whylogs and langkit, is now free and open-source under the Apache 2.0 license. A '1 Model (free tier)' remains listed on AWS Marketplace.
Tiers
- Complete WhyLabs platform
- whylogs data logging library
- langkit LLM monitoring toolkit
- Statistical summaries (profiles)
- Monitoring for one model
- Automated alerting
- Data drift detection
- Upstream data quality monitoring
- Monitoring for two models
- Data and model monitoring
- Automated monitoring and alerting
- Privacy-preserving data logging
- Monitoring for three models
- Data health tracking
- Model performance monitoring
- AI Governance features
- Enterprise contract with model monitoring at scale
- SOC 2 Type 2 compliance
- RBAC and SAML SSO
- API controls
Hidden costs
Costs that do not appear in the headline price. Sourced from the same pricing pages and product docs as the tiers above.
- AWS infrastructure costs
- Highcharts license for visualization (legacy)
Contract terms
Available via monthly or annual contracts on AWS Marketplace. No refunds are provided. Access to entitlements expires if the contract is not renewed or replaced.
How WhyLabs compares
WhyLabs was a pioneer in AI observability, offering a unique model-based pricing structure that did not penalize users for high data throughput. Following its acquisition by Apple in 2025, the platform transitioned to a fully open-source model, making it a highly cost-effective alternative to commercial competitors like Arize AI and Aporia for teams willing to manage their own hosting.
Alternatives by price
Who this fits
Best for teams seeking an open-source AI observability platform with robust data logging (whylogs) or those requiring model-based pricing that doesn't scale with data volume.
Notes
- WhyLabs, Inc. discontinued commercial operations in early 2025 following a strategic acquisition by Apple.
- The complete platform has been open-sourced to the community.
- Legacy pricing remains visible on cloud marketplaces as of 2026.
- The pricing model is based on the number of models rather than data volume or features.
Get a real quote
Prices above are list. Enterprise contracts almost always settle below list with annual commitment, multi-product bundles, or volume tiers. Send WhyLabs a quote request through AI Compliance Vendors and the conversation starts with the right context.
Our pricing methodology
Every tier on this page cites a public source. We do not paraphrase analyst reports or print numbers we cannot link to. If a tier exists but its price is hidden, we mark it "Contact vendor" rather than guess. If you spot a stale price, tell us and we will re-verify within 48 hours.
For context across all 10 vendors with public pricing, read AI Compliance Vendor Pricing in 2026.