LangWatch vs. Humanloop: Migrating is easy

 The comprehensive platform that replaces Humanloop's discontinued services while unlocking advanced agent testing capabilities with free migration support included.

 The comprehensive platform that replaces Humanloop's discontinued services while unlocking advanced agent testing capabilities with free migration support included.

How LangWatch compares to Humanloop

Feature

LangWatch

Humanloop

Core Purpose

Core Purpose

Agent testing, evaluations & observability

Agent testing, evaluations, & observability

LLM evaluations

LLM evaluations

Open Source

Open Source

Observability

Observability


Full tracing, automation triggers, alerts, custom metrics


Full tracing, automation triggers, alerts, custom metrics

OpenTelemetry Support

OpenTelemetry Support


Native OTEL support


Native OTEL support

Custom Metrics & Dashboards

Custom Metrics & Dashboards


Built-in, API accessible


Built-in, API accessible

Prompt Management

Prompt Management


Prompt experimentation & versioning


Prompt experimentation & versioning

Evaluations (Platform)

Evaluations (Platform)


GUI + workflows for devs & PMs


GUI + workflows for devs & PMs

Evaluations (Code)

Evaluations (Code)


W&B-style API, DSPy support


W&B-style API, DSPy support

Guardrails and Alerting

Guardrails and Alerting


Built-in rules engine & alerting


Built-in rules engine & alerting

DSPy Support

DSPy Support


Native DSPy integration, optimization studio


Native DSPy integration, optimization studio

Humanloop

Agent Simulation

Agent Simulation


Multi-turn, API/tool call evals


Multi-turn, API/tool call evals

Dataset Management

Dataset Management


Any format, Excel-style editing


Any format, Excel-style editing

Annotations

Annotations


Google Docs-style queues & comments


Google Docs-style queues & comments

UI/UX

UI/UX

Dev & PM friendly

for collaboration

Dev & PM friendly

for collaboration

Dev & PM friendly for collaboration

Dev & PM friendly for collaboration

Humanloop

Feature

Feature

LangWatch

Humanloop

LangWatch

Humanloop

Feature

Feature

LangWatch

Humanloop

LangWatch

Humanloop

Feature

Feature

LangWatch

Humanloop

LangWatch

Humanloop

Feature

Feature

LangWatch

Humanloop

LangWatch

Humanloop

Feature

Feature

LangWatch

Humanloop

LangWatch

Feature

LangWatch

Feature

LangWatch

Humanloop

Humanloop

Feature

LangWatch

What makes LangWatch different?

LangWatch provides all of Humanloop's core LLM evaluation and observability features plus industry-leading agent simulation capabilities for complex AI systems.

Open source, now and in the future

Open-source platform with long-term stability, essentially eliminating the risk of sudden acquisitions or platform discontinuations that can disrupt AI operations.

Complimentary migration support

Complimentary migration support with one-on-one onboarding to seamlessly transfer all your Humanloop traces, evaluations, and workflows before the sunset.

Migration takes less than a day

Thanks to our comprehensive support, migration takes less than a day:

  • One-on-one onboarding to understand your current Humanloop setup

  • Scripted exports for all your Humanloop traces and evaluation results

  • Workflow rebuilding for evals, traces, and tagging systems

  • SDK/API setup tailored to your existing stack (LangChain, OpenAI SDK, etc.)