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PromptLayer Pricing

freemiumlast verified September 6, 2026official site ↗

At a glance

Freemium LLM prompt management and observability platform. Free tier includes 5 users, 2,500-5,000 requests/mo, 10 prompt templates, and 250 evaluation executions/mo. Pro starts at $49/mo for unlimited workspaces, playgrounds, 150MB datasets, and pay-as-you-go request metering. Team/Scale ($199-$500/mo) includes 100k-250k+ requests/mo, 7.5k+ eval executions, 1GB dataset capacity, webhooks, and role-based access. Enterprise offers custom pricing for VPC/on-prem deployments, SAML SSO, EU data residency, custom SLAs, and SOC 2 compliance.

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.
PromptLayer overview →alternatives →review: 78/100 →

FAQ

How much does PromptLayer cost?

Freemium LLM prompt management and observability platform. Free tier includes 5 users, 2,500-5,000 requests/mo, 10 prompt templates, and 250 evaluation executions/mo. Pro starts at $49/mo for unlimited workspaces, playgrounds, 150MB datasets, and pay-as-you-go request metering. Team/Scale ($199-$500/mo) includes 100k-250k+ requests/mo, 7.5k+ eval executions, 1GB dataset capacity, webhooks, and role-based access. Enterprise offers custom pricing for VPC/on-prem deployments, SAML SSO, EU data residency, custom SLAs, and SOC 2 compliance. Paid pricing starts at $49/mo.

Does PromptLayer have a free plan?

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

What are free or cheaper PromptLayer 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.