PromptLayer
Prompt management platform for engineers and domain experts.
Description
PromptLayer is a prompt management and evaluation platform built by Magniv, Inc., founded in 2021 by Jared Zoneraich and Jonathan Pedoeem and headquartered in New York City. The product separates prompts from application code so subject matter experts in healthcare, legal, education, and customer support can iterate on prompts without engineering redeploys. Customers include Gorgias and Speak, with over 10,000 free and paid users across North America, Europe, and Asia.
Key Capabilities:
Visual prompt editor for non-technical collaborators
Prompt registry with versioning, commit messages, and Jinja2 or f-string templating
A/B testing and batch model comparison across OpenAI, Anthropic, Google, and Mistral
LLM evaluation with 20+ scoring criteria and scheduled regression tests
Real-time observability for production LLM applications
Cost analysis and API usage monitoring
Agent versioning, tracing, and regression sets
Python SDK and JavaScript SDK for application instrumentation
Alternative tools
- OpenAI Playground
Browser-based prompt iteration environment for the OpenAI API.
- Galileo AI
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- LangWatch
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- Adaline
End-to-end prompt management platform covering iteration, evaluation, deployment, and monitoring.
- Maxim AI
End-to-end AI evaluation platform with pre-production agent simulation and production observability
- Athina AI
Collaborative AI development platform for prototyping, evaluating, and monitoring LLM features.