LLM observability & evaluation · Humanloop

Humanloop

Prompt management, evaluation, and observability platform aimed at product teams collaborating on LLM features with domain experts.

Visit Humanloop Alternatives

Humanloop combines prompt versioning, evaluation, and production logging in one platform, with an emphasis on letting non-engineers (domain experts, product managers) collaborate on prompts and review model outputs alongside engineers. It supports running evaluation suites against datasets, human-in-the-loop review queues, and monitoring logged production traffic for quality regressions over time. Unlike pure tracing tools, its evaluation and collaboration workflow is a first-class feature rather than an add-on. Humanloop does not publish self-serve monthly pricing beyond a limited free trial (capped at a small number of members, evaluation runs, and monthly logs); production and larger deployments, including an optional VPC add-on, are sold through direct sales with volume-based and academic/non-profit discounts mentioned but not itemized publicly.

At a glance

Vendor Humanloop
Pricing model Quote only
Free tier Yes
Deployment Cloud, Self-hosted
Open source No
Best for Product teams that need non-engineers to collaborate directly on prompts and evaluation, not just engineers viewing traces.

Pricing

A capped free trial (limited members, eval runs, and monthly logs) is available for evaluation; beyond that, pricing is negotiated directly with sales and not published.

Plan Price Notes
Free trial $0 2 members, 50 eval runs, 10K logs/month, limited access to all features
Enterprise Custom SSO + SAML, RBAC, hands-on support with SLA, optional VPC deployment add-on

Prices read from the vendor's own page on September 21, 2026. Vendors change prices; check the source before you budget.

Features

  • Prompt versioning and collaborative editing for technical and non-technical users
  • Evaluation suites against curated datasets
  • Human-in-the-loop review queues
  • Production logging and quality monitoring
  • Role-based access control
  • Optional VPC deployment for Enterprise

Integrations

Profile last reviewed September 21, 2026

Alternatives

Braintrust Evaluation-first platform for testing, scoring, and comparing LLM application changes, with production tracing built in. LangSmith Tracing, evaluation, and deployment platform for LLM applications, built by the team behind LangChain and LangGraph. PromptLayer Prompt management and request-logging platform with versioning, playgrounds, and evaluation for LLM applications.

Humanloop in the index now

Terms to know

Data quality The degree to which data is accurate, complete, consistent and fit for the purpose it is being used for. Machine learning Building models that learn patterns from data to make predictions or decisions, rather than following hand-coded rules. LLM observability Monitoring a language model's live behavior in production, tracking its inputs, outputs, latency, cost, and failure patterns. Role-based access control (RBAC) Granting data or system permissions based on a user's assigned role rather than configuring access for each person individually.

Related guides

How to choose an LLM observability tool Pick an LLM tool by whether you need tracing, scoring or a gateway first — most teams eventually need all three, rarely from one vendor. How to evaluate LLM applications Offline evals, LLM-as-judge, human review and production monitoring, aimed at the whole pipeline rather than the model alone.