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  4. Kiln
Kiln logo

Kiln

Observability

Open-source AI engineering workbench for model evaluation, dataset curation, fine-tuning, and app reliability workflows.

Visit websiteDocs

Related tools

Explore products with related capabilities. Check their details for your use case.

Browse the category
MLflow logo
MLflow

Observability· mlflow.org

Open source

MLflow is an open-source AI engineering platform with GenAI evaluation, tracing, monitoring, and optimization workflows for agents, LLM apps, and models.

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Is this your company?Verify ownership · Add products · See activity
OverviewProduct evaluationResourcesCompany evidence

Product evaluation

Review Kiln for your team’s requirements before a technical pilot.

Commercial model

Open source

View vendor website

Listed pricing category. Confirm current rates, limits and enterprise contract terms with the vendor.

Implementation

API listed · Open source listed

DocumentationSource repository

Validate integration, deployment and operational requirements in your own environment.

Enterprise review

Security, data handling, support and contract terms require vendor confirmation. Linked sources do not establish certification or approval.

Company evaluation and adoption evidence

Enterprise fit

Buyer brief for procurement and architecture review

Source-labeled signals for cost, reliability, security, integration, and adoption proof. Missing compliance evidence is shown as a gap, not guessed.

Compare for enterpriseExport brief
Inferred

Commercial model

Open source profile signal; exact enterprise terms need buyer review.

View source
Needs verification

Reliability

No status page, uptime, or SLA evidence attached

Buyer recommendation

Shortlist only after verifying Reliability and Security/compliance.

API signal supports workflow automation.Docs are linked for implementation review.Open-source path can reduce lock-in review.At least one buyer evidence source is linked or verified.

Real data backfill while adoption proof grows

These are source-linked enrichment paths for missing fields. They are treated as proxies until claimed-company data and first-party tokens& adoption events replace them.

GitHub repository APIfreeStars, forks, license, topics, releases, default branch, repo freshness, and public contributor signal.OpenSSF ScorecardfreeOpen-source security posture checks for repos before enterprise review.npm downloads API

AgentRank trust profile

Public proof buyers and agents can trust

AgentRank

51

Public signals · ★ 5,254

Trust Score

47

observed

Category Rank

#12

Observability · public signals

Protocols

API, SDK

Agent-readable metadata

Tracked Developers

0

Known active developer activity

Profile Status

Unclaimed

Owner action needed

Trust Registry

AgentRank evidence file
observed

Source breakdown

GitHub5,254

68% confidence

Protocol support

APISDK
Adoption over time
Last 8 weeks+80 GitHub stars in 30d · cohort private · trust 47

Timeline appears after verified events.

We do not draw a fake adoption chart before live usage, self-reported proof, or challenge activity exists for this product.

Private (N<7)

active developers

Private (N<7)

verified adoptions

Private (N<7)

retention

Growth and Enterprise capabilities

Developer identities, account mapping, retention cohorts, and competitor overlap are available on Growth and Enterprise plans.

Talk to sales
Developer identities
See the builders behind saves, docs clicks, API calls, and retained usage.
Account map
Resolve developer activity into companies, teams, and enterprise accounts.
Retention cohorts
Track first API call through 7/30/90-day retention and expansion.
Competitor overlap
Find developers evaluating alternatives and switching between tools.
Category benchmark
Compare activation, retention, and growth against your market.
Resources
Official siteWEBSITE

Official product homepage or source page.

DocumentationDOCS

Builder documentation or implementation guide.

GitHub repositoryGITHUB

Public source repository used for verification.

Company details

Sign in to follow this company, vote for its product, or save it to your workspace.

Community support for Kiln. Votes do not verify product usage.

Pricing
Open source
Open source
Yes
API available
Yes

GitHub Stats

Stars
5,254
Forks
399
Issues
43
28,707
6,593
Open source
DeepEval logo
DeepEval

Observability· deepeval.com

Open source

Open-source evaluation framework for testing LLM apps, agents, RAG systems, and prompts with repeatable metrics, regression checks, and CI-friendly workflows.

19,261
2,163
Open source
OpenPipe ART logo
OpenPipe ART

Observability· art.openpipe.ai

Open source

Agent Reinforcement Trainer for improving LLM agent reliability with GRPO-based reinforcement learning workflows.

10,822
1,008
Open source

Keep evaluating Kiln

Comparisons, category adoption data, and shortlist guides that answer the questions this profile raises next.

Check the adoption evidence

  • Observability developers actually keep usingFiltered to products with verified usage events, cohort breadth, and retention.
  • AgentRank category rankingsHow every category is ordered by adoption proof, trust, and protocol support.
  • Best Open Source AI ToolsShortlist guide for this category, with the tradeoffs written out.
  • Best AI Observability ToolsShortlist guide for this category, with the tradeoffs written out.

Own Kiln? Generate its adoption badge embed, or claim the profile to send verified usage events.

Needs verification

Security/compliance

No security, trust, or compliance source attached

Source linked

Integration fit

API profile signal with implementation source linked

View source
Needs verification

Adoption proof

No public adoption proof attached

Vendor value loop

Vendors receive anonymous aggregate evaluation demand by default. Account details are shared only after explicit buyer contact or consent.

Request vendor contact
free
Public JavaScript package download trends for SDK/tool adoption proxies.
PyPI StatsfreePublic Python package download trends for SDK/tool adoption proxies.
Product Hunt APIfreemiumLaunch timing, maker activity, and early-adopter demand signals when products launch publicly.

Agent-readable protocol evidence raises trust and commercial readiness.

Benchmark proof

Automated measurements unavailable

Automated performance measurements are unavailable until a separately verified empirical evaluator is configured. Community reports do not unlock this component.

Trust gaps

Verify publisher ownership
Send SDK/API telemetry
Automated performance measurements unavailable

Enterprise verification can enrich evidence and export proof packages, but cannot buy rank.

Next best action

Verify ownership to manage Kiln.

Review aggregate activity and connect product usage evidence. Private reports retain their existing permissions and plan requirements.

Public projects and activity accumulate here before your company joins. Claim this existing profile to manage it and review aggregate activity.

Claim this tool to review aggregate activity
Recommended actions
Prioritized DevRel, product, and sales plays based on live adoption signals.