Prompt Tools

Tools for prompt engineering, prompt management, and AI output optimization.

Langfuse

Open-source LLM observability and tracing

API AI Model Open Source

LangSmith

LangChain's platform for debugging and evaluating LLM apps

API AI Model

Helicone

Open-source observability and cost tracking for LLM APIs

API Open Source

Portkey

AI gateway for unified LLM access with guardrails

API AI Model

Promptfoo

Open-source CLI for testing and red-teaming LLM prompts

API Open Source

PromptHero

Community platform for discovering AI art prompts

AI Model

FlowGPT

Community library of AI prompts and workflow templates

AI Model

PromptBase

Marketplace for buying and selling engineered AI prompts

PrompTessor

Workspace for generating, testing, and refining AI prompts

AI Model

PromptLayer

LLM prompt management, versioning, and analytics

API AI Model

Braintrust

Evaluation and observability for AI apps in production

PromptHub

Collaborative prompt management, testing, versioning, and deployment platform.

API Web App

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