PrompTessor generates, optimizes and reverse-engineers AI prompts and saves them in a library. Free plan; paid plans from $10/month.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
PrompTessor is a web-based AI prompt workspace. It helps users generate, analyze, optimize, refine and reverse-engineer prompts, then save the best versions in a prompt library. The site describes it as a way to get better results from AI without paying for a more expensive model.
The product is aimed at creators, marketers, developers and prompt engineers. It covers prompts for language models such as ChatGPT, Claude and Gemini, as well as image and video generators. A Chrome extension is listed as coming soon.
The generator uses a chat-style builder. A user describes the prompt they want, and PrompTessor produces a numbered version. In the homepage example, a sustainable fashion campaign request becomes a strategic prompt, then a platform-specific version, then a reusable template with variables such as {brand_name} and {campaign_goal}.
Each generated prompt comes with context, recommended models, variables, an estimated token count for input and output, and usage notes. Users can move a result into analysis, optimization or refinement. PrompTessor says its model recommendations map task type, capabilities and constraints to documented model-family guidance, and describe fit rather than guaranteed quality.
Six tools make up the core workspace: Prompt Generator, Prompt Analysis, Prompt Optimizer, Prompt Refinement, Reverse Prompt and Prompt Library. Reverse Prompt accepts images, videos, URLs or text. Prompt History keeps every version across generations, optimizations, refinements and reverse prompts in one place.
Templates support variables and saved presets, and the interface includes an output language setting. The site also lists multi-language support. For developers, PrompTessor provides a versioned REST API, signed webhooks with delivery retries, and a hosted MCP server that uses OAuth instead of API keys.
PrompTessor is an AI prompt workspace for generating, analyzing, optimizing, refining and reverse-engineering prompts. Users can save their best prompts in a library and track every version in a history.
PrompTessor has a free plan at $0 with 5 prompt usages per month. Paid plans are Pro at $10 per month, Pro+ at $15 per month and Max at $20 per month, with 1,500, 3,000 and 5,000 prompt usages per month respectively.
Yes. The Free plan is listed as forever free and includes limited access to features, 5 prompt usages per month, prompt templates and the library, and support. The sources do not mention a separate free trial.
It supports prompts for LLMs and assistants such as ChatGPT, Claude, Gemini, Grok, Llama, Mistral, DeepSeek and Perplexity. It also covers image models such as Midjourney, FLUX and Stable Diffusion, and video models such as Veo, Runway and Kling.
Yes. It offers a versioned REST API, signed webhooks and a hosted MCP server that connects through OAuth. Public API and MCP access are included on the Pro, Pro+ and Max plans.
Setup guides cover ChatGPT, Claude and Claude Desktop, Codex, Claude Code, Gemini CLI, Cursor, VS Code and Devin. Other clients that support remote Streamable HTTP servers and MCP OAuth discovery can also connect.
Reverse Prompt turns images, videos, URLs or text into prompts that users can reuse and adapt. It is one of the six core tools alongside the generator, analysis, optimizer, refinement and library.
It is aimed at creators, marketers, developers and prompt engineers who write prompts regularly. It also suits teams that want an organized library of approved, reusable prompts.