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PromptBase is a marketplace dedicated to AI prompts. Users can buy and sell high-quality, tested prompts for popular AI models to save time and API costs.
Other tools in the Prompt Engineering category
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How tools are selected
Every tool on aistacks is manually reviewed before being added. We look at real-world usage, workflow fit, and whether it genuinely saves time — not just popularity.
What belongs in a good stack
Tools are grouped by workflow role — not thrown together. Each stack is built around a specific persona and task, so every tool has a clear reason for being there.
Have thoughts on this tool?
Be the first to share how you use it, what workflow it fits into, or a tip that others might miss. Real usage notes help everyone.
Pay per prompt (usually $1.99 - $4.99)
Free developer tier, paid tiers for teams
Open-source LLM observability platform with prompt tracking.
Free up to 100k requests/mo, Pro at $50/mo
Open-source LLM engineering platform for traces, evals, and prompts.
Open-source/free tier available, cloud plans scale with usage