Modular Prompt Library
Modular Prompt Library: A modular prompt workspace for teams that need reusable components and controlled iteration. Ranked #18 of 26 in Prompt Management Software by our editors (7.7/10); pricing: Free plan · 60-day trial; best for teams building reusable modular prompts.
At a glance
- Editor score7.7 / 10
- PricingFree plan · 60-day trial
- Best forTeams building reusable modular prompts
- Free planYes
- Prompt versioningYes
- Facts checked20 Sep 2026
Where it wins
- Reusable modules, templates, version history, and rollback
- Side-by-side testing across OpenAI, Anthropic, and Google
- Team sharing with RBAC, MFA, and organizational management
Where it doesn't
- Personal use only on the Personal Account plan
- Personal testing requires users’ own API keys
- Growth, Professional, and Enterprise prices are not stated here
Our verdict on Modular Prompt Library
Modular Prompt Library is a web-based prompt management platform for individuals and teams that need to create, organize, and maintain reusable AI prompts. It is suited to prompt engineers, content teams, software development teams, support teams, agencies, and educational institutions. The core workflow combines modular prompt components, templates, version history, rollback, variables, model settings, and run history by prompt version, giving teams a structured place to develop prompt libraries rather than keeping prompt variations in separate documents.
Its strongest fit is multi-model prompt development. The testing environment supports side-by-side comparison across OpenAI, Anthropic, and Google models using users’ own API keys. That provider coverage is useful for teams evaluating how a prompt behaves across model ecosystems, while version history and run history help connect an output to a particular prompt version. JSON and prompt exports also provide a way to move prompt assets outside the library. The service runs on the web, with no additional platform coverage listed.
The free Personal Account includes unlimited prompts and modules, version control, export capabilities, and prompt testing, but is intended for personal use. Starter is also listed at $0 per month and adds team collaboration, organizational management, granular user access control, MFA security, and JSON export. Growth, Professional, and Enterprise are positioned for larger team stages and list the same organizational capabilities, while organizational accounts include a 60-day free trial with no credit card required. Choose Modular Prompt Library when reusable structure, model comparison, and team controls matter; choose another tool if you need a non-web workflow or want prompt testing without supplying your own provider keys.
Your product? Our editors can test Modular Prompt Library in depth and publish a review, labelled as paid · from $149/mo →
Modular Prompt Library pricing
All 5 Modular Prompt Library plans and prices →
Modular Prompt Library fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Prompt versioning | Yes |
| Prompt testing | Yes |
| Prompt templates | Yes |
| Approval workflows | Not verified |
| Access controls | Yes |
| API or SDK access | Not verified |
| Model provider support | Multi-provider |
| Free trial | 60 days · no card needed |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | 2FA |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 3 integrations: OpenAI, Anthropic, Google |
| Pricing | Free plan · 60-day trial (source) |
| Website | modularprompt.com |
| Facts checked | 20 Sep 2026 |
Modular Prompt Library integrations
Modular Prompt Library lists 3 integrations on its own site.
- OpenAI
- Anthropic
Alternatives to Modular Prompt Library
- PromptHubA full prompt-operations workspace for teams managing versions, testing, approvals, and APIs.9.4
- AgentaA flexible prompt operations workspace with open-source and hosted deployment options.9.3
- LangfuseA broad LLM operations platform for tracing, prompt evaluation, experiments, and cost tracking.9.2
See all Modular Prompt Library alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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