PromptLayer review

PromptLayer is the most prompt-centric tool on the list. Its Prompt Registry acts as the system of record for prompt templates: each template holds messages, variables and model settings, gets saved as a new version with a commit message, and is released to the app through labels such as prod or staging. The SDK runs a prompt by name and release label, so moving a label changes what production serves without a redeploy. Around that sit a playground for testing edits, A/B testing, snippets for reusable text, and Tables for scoring prompt outputs against datasets and past requests. The free plan covers 5 users and 2.5k requests a month but only 10 prompts, so most teams land on Pro at $49 a month, which adds unlimited prompts, workspaces and playground runs with pay-as-you-go overage. The gap is governance: deployment approvals, RBAC and SSO are Enterprise features, and the next public tier after Pro is Team at $500 a month.

Who it is for

Teams where product managers and domain experts own prompt wording and need a review and release flow that feels like version control.

Price

Free for 5 users and 2.5k requests a month; Pro $49 per month.

PRO for small teams $49 per month
Quoted from the vendor pricing page on November 7, 2026.

Key features

• Prompt Registry with folders, tags and workspace search
• Versions saved with commit messages and version diffs
• Release labels such as prod or staging, with approval flows on important labels
• A/B testing and dynamic release labels
• Tables for datasets, scoring and request-history backtests

Strengths and weaknesses

• Strength: Free plan allows 5 users
• Strength: Release labels let the app pick a version at runtime without code changes
• Strength: SOC2 Type 2, GDPR, HIPAA and CCPA listed on the pricing page
• Weakness: Free plan is capped at 10 prompts
• Weakness: Deployment approvals and RBAC are Enterprise only
• Weakness: Team plan jumps to $500 a month

Key facts

• Free: $0, 5 users, 2.5k requests a month, 10 prompts
• Pro: $49 per month, unlimited prompts and workspaces
• Team: $500 per month, 25 users, 100k+ requests
• Overage: $0.003 per transaction on Pro

Where it ranks

PromptLayer is No. 2 in our Best AI Prompt Management Tools verdict.