Prompt Bunker vs SpacePrompts
Prompt Bunker
promptbunker.comSpacePrompts
spaceprompts.comSide by side
| Figure | Prompt Bunker | SpacePrompts |
|---|---|---|
| Price from | $8/mo | $5/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| API | — | Yes |
| Plans published | 2 | 3 |
| Spec score · Prompt Management Software | 8.1 (#12) | 8.5 (#8) |
| Product | Prompt Bunker is a workspace for organizing AI prompts and turning them into repeatable team workflows. | SpacePrompts is a prompt management platform for saving, organizing, running, versioning, and reusing AI prompts. |
| Prompt library | The searchable prompt vault supports categories, tags, project context, and workspace ownership. | The service stores prompts in categories and tags and supports searching and reuse. |
| Support | The Pro plan includes priority support and faster feature access. | The site directs users to a contact form and says replies typically arrive within 24 hours. |
| Team collaboration | Shared workspaces and owner, editor, and viewer roles help teams share prompts with related notes, tasks, and status. | Team accounts provide a shared library, collaborative editing, invitations and Admin, Editor or Viewer roles. |
Plans
In their own words
Prompt Bunker
Prompt Bunker has no write-up on Specifiction yet; its figures are above.
SpacePrompts
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.