PromptHub vs SpacePrompts

PromptHub is a community-driven platform for finding, managing, testing, and deploying prompts. Public prompts can be shared with the community; private prompts with teammates are available on paid plans. Git-based versioning tracks prompt changes, and an API supports prompt management and deployment. Evaluations compare outputs across test cases, while pipelines can run checks on commits or merges for secret leaks, profanity, and regressions. Listed model providers include OpenAI, Anthropic, Azure, Google, Meta, Bedrock, and Mistral. Prompts can also be deployed through shareable forms or Zapier. The Free plan includes unlimited public prompts and team members, but not private prompts; it also has 2,000 requests per month and limited API access. Pro costs $12 a month for one user, and Team costs $20 a month per user. Enterprise pricing is custom and not listed. Customers supply their own LLM API keys and pay providers' token costs separately. The pricing page says prompts, variables, and outputs are encrypted at rest and in transit using AES-246, TLSv1.2+, and regularly rotating keys. The company is Tethered Software Inc.

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.