PromptLayer is a comprehensive prompt engineering platform designed for managing, testing, deploying, and analyzing prompts for large language models. The platform offers prompt versioning, performance evaluations, model analytics, and team collaboration tools, enabling product, marketing, and content teams to edit prompts directly without engineering releases while providing insights into user interactions.

Key Features:

• Prompt Version Control: Track iterations, diff versions, and roll back changes
• Dashboard Prompt Testing: Update and test prompts directly from interface
• Team Collaboration Tools: Comment, write notes, and share feedback on prompts
• Interactive Publishing: Deploy new prompts for production and development
• Human and AI Grading: Rigorously test prompts before deployment
• Historical Data Testing: Compare new prompt versions against past performance
• Automated Evaluations: Trigger tests every time a prompt is updated
• LLM Observability: Monitor and log all LLM interactions
• Performance Analytics: Track prompt effectiveness and model behavior
• Visual Prompt Tools: Simplified prompt creation interface
• Non-Technical User Access: Enable non-engineers to manage prompts
• Decoupled Deployments: Update prompts independently from code releases

Pricing: PromptLayer offers a freemium plan with limited features. Paid plans with specific pricing not publicly disclosed - contact vendor for pricing details. No free trial available but freemium version accessible.

Alternatives:

• LangSmith - LLM development platform
• Helicone - LLM observability platform
• Agenta - Prompt management and testing
• Literal AI - Prompt engineering platform