PromptLayer vs PromptVersions
PromptLayer
promptlayer.comPromptVersions
promptversions.comSide by side
| Figure | PromptLayer | PromptVersions |
|---|---|---|
| Price from | $49/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 4 | 3 |
| Spec score · AI Prompt Management Software | 7.9 (#12) | 7.1 (#23) |
| Spec score · Prompt Management Software | 7.9 (#14) | 7.1 (#24) |
| Intended users | PromptLayer describes its platform as serving engineers and domain experts who build and improve AI products together. | The maker describes the product as built for prompt engineers and says it supports product managers, writers, and analysts who edit prompts. |
Plans
In their own words
PromptLayer
PromptLayer combines a prompt registry and visual prompt CMS with evaluations, observability, and agent tracing for teams building AI products. Teams can visually edit, version, test, and deploy prompts without waiting for an application redeploy, allowing domain experts and non-technical stakeholders to work alongside engineers. Evaluations can run when prompt versions change, through the API, or on demand in the UI. They include historical backtests and side-by-side model comparisons. Tracking covers requests, traces, cost, latency, token usage, scores, and custom metadata, with OpenTelemetry span support. The OpenAI integration includes versioned prompts, release labels, request observability, evaluations, and model comparisons. Free, Pro, and Team are cloud-hosted in the US; Enterprise offers self-hosting on GCP, AWS, or Azure, EU cloud hosting, or single-tenant cloud hosting. PromptLayer states that it maintains SOC 2 Type 2, HIPAA, GDPR, and CCPA compliance. Free costs nothing, Pro costs $49 a month, and Team costs $500 a month. Enterprise pricing is custom.
PromptVersions
PromptVersions has no write-up on Specifiction yet; its figures are above.