Langtail

Langtail is an LLMOps platform designed to help teams develop, test, and deploy AI-powered applications. It offers tools for prompt engineering, performance testing, and real-time monitoring of language models. The platform supports various LLM providers and provides features for collaborative prompt development and management.

Langtail offers a platform for prompt engineering and LLM operations, which aligns with the idea's focus on AI productivity tools. It provides a 'Prompt Sensei' and 'Prompt Improver' which act as guided tools for prompt creation. The platform integrates with multiple LLM providers (OpenAI, Anthropic, Google, Deepseek, Grok) and offers a price comparison tool, indicating multi-model integration. While it doesn't explicitly list 150+ tools, it has a 'Template Gallery' with categorized AI templates and assistants, fulfilling the tool catalog and categories feature. User authentication and subscription tiers are clearly present on their pricing page. The platform also offers search and filter capabilities within its template gallery and LLM price comparison. Advanced users can create and manage their own prompt templates. Finally, Langtail provides an SDK and API access for integrating their tools.