Skip to content
aicoolies logo
WhyLabs logo

WhyLabs

Discontinued

Discontinued AI observability company with open-source platform handoff

WhyLabs was an AI observability platform for monitoring ML models, LLM apps, and data pipelines. WhyLabs, Inc. has discontinued operations; docs say the AI Control Center became Apache-2.0 OSS on January 23, 2025 and hosted SaaS access ended March 9, 2025. The whylogs, LangKit, and whylabs-oss repos remain public, so this page is a self-hosted OSS handoff, not an active managed SaaS recommendation.

About WhyLabs

WhyLabs was an AI observability platform created at the Allen Institute for Artificial Intelligence (AI2) by Amazon Machine Learning alumni. WhyLabs, Inc. has discontinued operations, and the AI Control Center became an open-source project on January 23, 2025. Hosted SaaS access for existing customers was available until March 9, 2025, so this page now reflects the self-hosted OSS handoff rather than an active managed SaaS.

The platform monitors ML models, LLM applications, and data pipelines, surfacing data drift, quality issues, performance degradation, and bias. Automated alerting across dozens of data vitals comes with out-of-the-box configurations. Purpose-built agents analyze raw data without moving or duplicating it, ensuring privacy and security.

For LLM applications, WhyLabs extracts telemetry from prompts and responses to detect malicious prompts, toxicity, hallucinations, and jailbreak attempts. The system processes 100% of data without sampling, supporting tabular, image, text, and embedding data types across any platform.

The OSS handoff centers on the whylabs-oss platform plus whylogs for privacy-preserving data logging and LangKit for LLM monitoring. The repositories remain public under Apache-2.0, but WhyLabs docs say the AI Control Center OSS project is not accepting community contributions or new feature requests from the former team.

Historical integrations included Azure, SageMaker, MLflow, Apache Spark, Pandas, Kafka, Ray, Airflow, dbt, and Databricks. Teams evaluating the code now should plan for self-hosting, Highcharts licensing where dashboards require it, and their own maintenance path.

Pricing & Platform Specs

Pricing Summary

Freemium AI observability and LLM guardrails platform. The core data profiling library whylogs is 100% open source under Apache-2.0 ($0). The cloud-hosted WhyLabs platform offers a Free Starter tier ($0/mo) for up to 2 models/datasets, 10M daily data points, and 14-day data retention. Enterprise tier offers custom pricing for unlimited models, extended data retention, SAML SSO, LangKit LLM guardrails, SOC 2 Type II compliance, and private VPC/on-premise deployments.

Supported Platforms

Self-hosted OSS; hosted SaaS discontinued

Why it was discontinued

discontinued March 9, 2025

WhyLabs discontinued its managed SaaS operations. Core open-source profiling libraries remain available, while teams needing active production ML observability and LLM tracing use Evidently AI or Arize Phoenix.

use instead: Beszel, TensorZero

Explore categories, tags & use cases

Lightweight server monitoring with Docker stats and alerts

Beszel is a lightweight, self-hosted server monitoring platform built in Go that tracks CPU, memory, disk, network, GPU, temperature, and Docker container metrics with historical data visualization and configurable alerts. Its simple hub-and-agent architecture deploys in minutes and consumes minimal resources compared to traditional monitoring stacks like Prometheus and Grafana.

freeOpen Source

Open-source LLM gateway with built-in optimization and A/B testing

TensorZero is an open-source LLMOps platform in Rust that unifies an LLM gateway, observability, prompt optimization, and A/B experimentation in a single binary. It routes requests across providers with sub-millisecond P99 latency at 10K+ QPS while capturing structured data for continuous improvement. Supports dynamic in-context learning, fine-tuning workflows, and production feedback loops. Backed by $7.3M seed funding, 11K+ GitHub stars.

freeOpen Source

Side-by-Side Comparisons

Evidently AI logo
Evidently AI
vs
Arize Phoenix logo
Arize Phoenix
vs
WhyLabs logo
WhyLabs

Evidently AI vs Arize Phoenix vs WhyLabs — ML Monitoring & Data Drift Detection Tools Compared

Machine learning models degrade silently in production as data distributions shift, features drift, and concept relationships change. Catching these problems before they impact business outcomes requires dedicated monitoring infrastructure. This comparison examines three leading ML observability platforms: Evidently AI as the open-source monitoring standard with expanding LLM capabilities, Arize Phoenix as an OpenTelemetry-native evaluation platform backed by significant funding, and WhyLabs as a privacy-first monitoring solution with real-time guardrails.

Community experience

Sources & verification

Sources checked
Content verified

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is WhyLabs?

WhyLabs was an AI observability platform for monitoring ML models, LLM apps, and data pipelines. WhyLabs, Inc. has discontinued operations; docs say the AI Control Center became Apache-2.0 OSS on January 23, 2025 and hosted SaaS access ended March 9, 2025. The whylogs, LangKit, and whylabs-oss repos remain public, so this page is a self-hosted OSS handoff, not an active managed SaaS recommendation.

Is WhyLabs free?

WhyLabs offers a free tier alongside paid plans. Freemium AI observability and LLM guardrails platform. The core data profiling library whylogs is 100% open source under Apache-2.0 ($0). The cloud-hosted WhyLabs platform offers a Free Starter tier ($0/mo) for up to 2 models/datasets, 10M daily data points, and 14-day data retention. Enterprise tier offers custom pricing for unlimited models, extended data retention, SAML SSO, LangKit LLM guardrails, SOC 2 Type II compliance, and private VPC/on-premise deployments.

Is WhyLabs open source?

Yes — WhyLabs is open source.

Is WhyLabs still available?

No — WhyLabs was discontinued on March 9, 2025. WhyLabs discontinued its managed SaaS operations. Core open-source profiling libraries remain available, while teams needing active production ML observability and LLM tracing use Evidently AI or Arize Phoenix. Consider Beszel, TensorZero instead.

What are the best WhyLabs alternatives?

The first editor-selected WhyLabs alternatives are Beszel, TensorZero.