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LangWatch Pricing

freemiumopen source · Apache-2.0last verified September 6, 2026official site ↗

At a glance

Open-source core (Apache-2.0 license) for self-hosted LLM observability, guardrails, and agent evaluations with $0 software license fees. LangWatch Cloud offers a Developer Free tier ($0/mo, 50k events/mo, 2 seats, 14-day retention), Growth tier ($34/core-seat/mo with 200k events/mo included, $6/100k overage, 30-day retention, unlimited lite-users, and private Slack support), and Enterprise custom tiers (VPC/On-premise deployment, custom data retention, SAML 2.0 SSO, granular RBAC, audit logs, and dedicated 99.9% Uptime SLAs).

Self-hosting cost

LangWatch is open source under the Apache-2.0 license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage. Any hosted, managed, or API plans remain separately priced.

Free & cheaper AI Monitoring & Observability

same category, free plan or open-source license

OpenLITopen source100% free and open source under the Apache-2.0 license ($0 self-hosted on Docker and Kubernetes). Features OpenTelemetry-native LLM tracing, GPU hardware metrics (NVIDIA/AMD/Intel), Prompt Hub, and security guardrails. Managed OpenLIT Cloud edition is available for hosted enterprise deployments.Grafanaopen sourceGrafana is free and open-source under AGPL-3.0 for self-hosting. Grafana Cloud features a generous free tier (10k metrics series, 50GB logs/traces) and a Pro tier starting at $19/month plus pay-as-you-go usage.Latitudeopen sourceLatitude is an open-source AI agent observability and evaluation platform under the MIT license. It offers a free self-hosted edition and a free cloud Starter tier (20,000 credits/mo), alongside a Pro plan at $99/month for growing teams and custom Enterprise pricing.Judgevalopen sourceJudgeval is an open-source Python SDK (Apache-2.0) for AI agent evaluation and tracing. Judgment Labs offers hosted enterprise agent behavior monitoring and evaluation platform access via custom quotes.
LangWatch overview →alternatives →review: 78/100 →

FAQ

How much does LangWatch cost?

Open-source core (Apache-2.0 license) for self-hosted LLM observability, guardrails, and agent evaluations with $0 software license fees. LangWatch Cloud offers a Developer Free tier ($0/mo, 50k events/mo, 2 seats, 14-day retention), Growth tier ($34/core-seat/mo with 200k events/mo included, $6/100k overage, 30-day retention, unlimited lite-users, and private Slack support), and Enterprise custom tiers (VPC/On-premise deployment, custom data retention, SAML 2.0 SSO, granular RBAC, audit logs, and dedicated 99.9% Uptime SLAs). Paid pricing starts at $34/core.

Does LangWatch have a free plan?

Yes — LangWatch has a free plan alongside its paid tiers.

Can you self-host LangWatch for free?

LangWatch is open source under the Apache-2.0 license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage. Any hosted, managed, or API plans remain separately priced.

What are free or cheaper LangWatch alternatives?

OpenLIT, Grafana, Latitude are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified September 6, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.