PromptLayer and SuperPrompts both manage prompts, but PromptLayer is a much larger product.
PromptLayer is a full prompt-ops suite: a registry for prompts, a tool registry, skill collections, multi-step workflows with branching, dataset management, evaluations, production tracing, AB testing with live traffic routing, and enterprise self-hosting. If your team's job is "we run LLM systems in production and need every layer of that stack handled", PromptLayer is built for that. The pricing reflects the surface area: $500 a month for the Team plan that unlocks webhooks and serious request volume.
SuperPrompts does prompt management as the whole product: a sections editor with {{ variables }}, content-addressed versions, a production pointer with rollback, a REST API, a Node SDK, and an MCP server so Claude Code or Cursor can edit prompts directly. No workflows. No tracing. No AB testing. No evals.
Where PromptLayer is genuinely ahead
Four things stand out as real PromptLayer wins that we don't have and aren't planning soon.
Production AB testing. Route a percentage of live traffic between prompt variants and measure outcomes. For mature teams iterating with real users, this is the cleanest way to ship a change without guessing.
Evaluations. Datasets, backtests, regression tests, LLM-as-judge grading and human review. We removed our evaluation feature because almost nobody used it; PromptLayer's is a core part of the product.
Workflows and orchestration. Multi-step chains, branching logic, skill collections and tool registries as first-class objects.
Webhook-driven CI/CD. When a prompt commits, PromptLayer can trigger a downstream pipeline (Team plan and above).
Where SuperPrompts wins
Focus and price. The editor works in sections so a diff shows which rule changed. Variables are detected as you type and listed by the API, so the code that fills them in cannot drift from the prompt. Staging reads ?version=latest, production reads the published version, same id. The MCP server is one claude mcp add command and exposes read, write and publish tools, which PromptLayer does not document as a first-class feature.
We also ship Prompt Guard, an optional anti-injection layer appended to served prompts. PromptLayer surfaces attack patterns via observability but does not modify what you serve.
The pricing reality
PromptLayer's Free plan is capped at 10 prompts, 5 users and 2,500 requests a month. Pro at $49 removes the prompt cap. Team at $500 is the first plan with webhooks and 100k+ requests. Enterprise unlocks self-hosting, RBAC and HIPAA.
That curve is reasonable if you grow into the full feature set. It is a lot if you only want prompt management. SuperPrompts is EUR 9.99 a month for unlimited projects, prompts and users, and the free plan (one project, five prompts, 60 requests a minute) is enough to ship a real side project. Read more in REST API vs hardcoded prompts.
Honest summary
Pick PromptLayer if you need AB testing, evaluations, workflows or production tracing, or you're scaling into Team-tier request volume anyway. Pick SuperPrompts if prompt management is the main job, you want it editable from your coding agent, and you'd rather pay a small flat fee.
Both are honest choices for different sizes of problem.
SuperPrompts keeps versioned system prompts behind one REST call, with a Node SDK and an MCP server for Claude Code and Cursor. Try it free.