PromptForge vs SpacePrompts

PromptForge manages AI prompt templates and makes them available through a REST API. It is aimed at AI developers who want to update prompt text without redeploying application code. Templates can include reusable placeholders using {{variable}} syntax. Each edit creates an immutable version, and users can compare line-by-line changes and roll back. Applications can request a stable, latest, or specific prompt version; API requests use Bearer token authentication and GET or POST methods. Listed integrations include OpenAI, Anthropic Claude, Google Gemini, Grok, Groq, Mistral, Vercel AI SDK, Ollama, Cohere, Together AI, Azure OpenAI, and AWS Bedrock. PromptForge stores, organizes, versions, and shares text prompts; it does not perform AI generation, analysis, or training. The free Hobby plan is billed forever and allows one production prompt and 1,000 API requests per month. Starter costs $9 a month, Pro $29 a month, and Business $49 a month. The terms state that there is no export feature or formal SLA or uptime credits.

SpacePrompts is a prompt management platform for people and teams working with AI. It runs on the web, through an API, and with Chrome, Edge, and Firefox extensions. Users can save, organize, run, version, and reuse prompts. The Playground combines an editor, variables, model selection, and immediate runs. An Evaluator scores prompts, highlights weak areas, and gives improvement guidance. Every save creates a version that can be restored later. The prompt manager extension can turn highlighted webpage text into a prompt. Its token counter supports OpenAI, Claude, Gemini, and DeepSeek models, showing token counts and estimated costs. Pro and Team plans provide API access, limited to 60 requests per minute per key. Team workspaces add shared libraries, collaborative editing, and role permissions for up to five members. Free includes 50 prompts and daily usage limits; Pro is $5 a month billed annually, and Team is $9 a month billed annually.