If you want a full-featured tool to build prompts for your AI models, PROMPTMETHEUS is a great option. The service lets you write, test, optimize and run prompts on more than 80 Large Language Models (LLMs) from different sources. It's got a prompt toolbox, the ability to select the best models, performance testing, and the ability to run prompts on your own endpoints so you can integrate with third-party services like Notion, Zapier and Airtable. PROMPTMETHEUS also has features like composability, history, cost estimation, data export, insights and collaboration.
Another option is OctiAI, a more advanced AI prompt generator that can use multiple models like ChatGPT and Mid Journey. It's got an "Optimize" feature to tweak prompts, cross-platform support and an AI discord community for collaboration. OctiAI is geared for businesses, startups and professionals who want to optimize their operations and get more out of their AI by optimizing prompts.
If you're focused on optimizing prompts for a specific model like GPT-4 and ChatGPT, PromptPerfect is a good option. It's geared for quick optimization so you can get the best results fast, which is good for people who need to optimize fast.
Last, GeneratedBy is an all-purpose platform for building, testing and sharing AI prompts. It's got a prompt editor with optimization tools, support for multimodal content and integration with Large Language Models. You can use prebuilt prompts as inspiration and deploy micro-SaaS applications easily, so it's good for a lot of different use cases.