KingPrompt vs PromptHub (2026)
By Noahlast updated
KingPrompt
KingPromptA free web workbench and template library for developers building model-specific prompts, AGENTS.md files and Cursor skills, plus a directory of AI tools.
- Pricing
- Free tier · paid from $19 one-time
- License
- Freemium
Best for Turning a reusable system prompt into model-specific syntax, such as XML tags for Claude or Markdown for GPT and Gemini, with a token and cost-per-run estimate before shipping it
PromptHub
PromptHubA prompt management platform for teams building LLM features, with Git-style versioning, side-by-side model testing, evaluations, CI pipelines and an API, free for public prompts.
- Pricing
- Free tier · paid from $12/mo
- License
- Freemium
Best for Versioning and testing the production prompts behind an LLM feature, with branches, merge requests and evaluation pipelines that stop a regressed prompt from shipping
Which should you choose?
Choose KingPrompt if…
wins 2/6 use cases
- You want a prompt builder that is free with no account, and PromptHub's free plan, which makes every prompt public, is not acceptable
- You want a prompt compiled into one of KingPrompt's six syntax profiles, such as XML hierarchy for Claude or standard Markdown for GPT and Gemini
- You want a live token count and an estimated cost per run for a chosen model, priced from per-million-token rates, before shipping a prompt
- You write AGENTS.md files or Cursor skills and want KingPrompt's AGENTS.md optimizer and its catalog of 77 Cursor SKILL.md skills
- You want quick starting points, such as Dockerfile, database schema or OWASP audit prompts, from KingPrompt's 23 Express templates
Choose PromptHub if…
wins 3/6 use cases
- You need Git-style branches, commits and merge requests that log every change to a prompt's text, parameters and model
- You want to compare outputs from OpenAI, Anthropic, Azure, Google, Meta, Bedrock and Mistral models side by side and run batch tests over datasets
- You want pipelines that run evaluators on every commit or merge request and block a failing prompt version, on PromptHub Team at $20/user/month ($15 billed yearly)
- Your application should fetch or run the latest prompt commit through PromptHub's REST API instead of hard-coding prompts
- Several people edit the same prompts, which KingPrompt's browser-only vault cannot share or sync
KingPrompt vs PromptHub: feature comparison
| Feature | KingPrompt | PromptHub |
|---|---|---|
| Starting price | Yesfree; no paid plan for prompt users | Yesfree plan; Pro from $12/mo, or $9/mo billed yearly |
| Free tier | Yesworkbench, templates, skills catalog and vault, no account needed | Yesunlimited members, 2,000 requests a month, public prompts only |
| Private prompts | Yesfree, saved in browser local storage | Yesunlimited from $12/mo (Pro, single user) |
| Cloud sync and sharing | Nono sync, backup or sharing, even after sign-in | Yesshared projects with unlimited members on Free and Team |
| Platforms | Partialweb only | Partialweb only |
| Version control | Unknown | Yesbranches, commits and merge requests, included on Free |
| Model-specific syntax compiling | Yessix profiles, including XML hierarchy, Markdown and Llama header format | Unknown |
| Token count and cost-per-run estimate | Yesper-million-token prices for each target model | Unknown |
| Side-by-side model testing | Partialtoken and cost estimates only | YesOpenAI, Anthropic, Azure, Google, Meta, Bedrock and Mistral |
| Evaluations and CI pipelines | Unknown | Yesfrom $20/user/mo (Team), or $15 billed yearly |
| API and deployment | Partialcopy or export prompts as .md | YesREST API (/head, /run), Zapier actions and forms; full API from $12/mo (Pro) |
| Templates and developer extras | Yes23 Express templates, 77 Cursor skills, AGENTS.md optimizer | Yescommunity library of public prompts |
| Team permissions and SSO | Novault is local to one browser | Yesteam permissions on Team; SSO and SAML on Enterprise |
| Compliance | Unknown | PartialSOC 2 listed as in progress |
| Support and documentation | Nono documentation beyond directory submission terms | Partialprivate Slack support on Team; API docs link returned a 404 in October 2026 |
| Learning curve | Partialmoderate | Partialmoderate |
KingPrompt vs PromptHub: pricing
Every tier both tools publish, as we last checked them — not just the entry price.
KingPrompt
- CommunityFree workbench, templates, skills catalog and vault; tool makers get a free directory listing after 24-48 hour manual review if their site carries a dofollow KingPrompt badge.Free
- Platform ContributorFor tool makers: permanent placement in the top VIP showcase, instant approval through Stripe, highest search priority and no badge requirement.$19 once
PromptHub
- FreeUnlimited team members and public prompts, no private prompts, 2,000 LLM requests and 10 prompt enhancements a month, limited API access.Free
- ProBilled monthly, or $9/month billed yearly; single user, unlimited private prompts, 10,000 requests and 200 prompt enhancements a month, full API access.$12/mo
- TeamPer user, billed monthly, or $15/user/month billed yearly; unlimited members, 50,000 requests and 500 prompt enhancements a month, evaluations, pipelines, team permissions and private Slack support.$20/mo
- EnterpriseCustom; SSO and SAML, custom limits and roles, custom model support and dedicated support; SOC 2 listed as in progress.Custom
KingPrompt vs PromptHub pricing: which costs less?
KingPrompt costs less: the KingPrompt workbench, templates, skills catalog and vault are free with no paid user plan, while PromptHub is free only for public prompts and charges $12/month for private prompts on Pro and $20/user/month for evaluations and pipelines on Team.
PromptHub's yearly billing lowers Pro to $9/month and Team to $15/user/month, and Enterprise is custom-priced. Every PromptHub plan caps LLM requests, at 2,000, 10,000 or 50,000 a month, and model token costs are paid separately to OpenAI, Anthropic or other providers through the customer's own API keys. KingPrompt's only paid item is for tool makers: a $19 one-time Platform Contributor listing that skips the free directory listing's dofollow badge requirement and its 24-48 hour manual review.
Which is easier to use, KingPrompt or PromptHub?
Both carry a moderate learning curve: KingPrompt's Express mode fills one of 23 templates quickly but its Studio mode asks for a persona, rules, few-shot examples and a context stack, while PromptHub adds Git-style branches, merge requests, datasets and evaluators.
KingPrompt needs no account, so a developer can start building in the browser at once, but KingPrompt has no documentation beyond its directory submission terms, and its 'Contribute a prompt on GitHub' link returned a 404 in October 2026. PromptHub's free plan includes version control, batch testing, prompt chains and forms, so a team can try the full workflow before paying, but PromptHub's footer link to its API documentation also returned a 404 in October 2026, and its product blog's latest post is dated October 23, 2025.
Is KingPrompt more private than PromptHub?
On free plans, yes: KingPrompt keeps saved prompts in the browser's local storage, while every prompt on PromptHub's free plan is public and private prompts start at $12/month on Pro.
KingPrompt's local-only vault has a cost: clearing browser data or switching devices loses saved prompts, and there is no account sync or backup even after signing in with GitHub or Google. Exporting prompts as .md files is the way to keep copies. PromptHub's paid plans keep prompts private inside shared projects, PromptHub Enterprise adds SSO and SAML, and PromptHub lists SOC 2 as in progress. PromptHub requests run on the customer's own model API keys.
Which is better for teams, KingPrompt or PromptHub?
PromptHub is better for teams, with unlimited members on its Free and Team plans, merge requests that log every change, team permissions on Team and SSO on Enterprise, while KingPrompt has no way to sync or share saved prompts.
PromptHub's Team plan, at $20/user/month or $15 billed yearly, adds evaluations, pipelines that block failing versions, team permissions, 50,000 requests a month and private Slack support. Heidi Health, an AI medical scribe company, reports 3x faster prompt testing after moving its prompt work off spreadsheets and Jupyter notebooks onto PromptHub. KingPrompt suits an individual developer: prompts can be copied or exported as Markdown and passed along by hand, but the KingPrompt vault lives in one browser.
Strengths and weaknesses
KingPrompt
Pros
- Express and Studio modes cover quick template fills and full structured builds with persona, constraints, few-shot examples and a tools-and-memory context stack.
- Six syntax profiles and a target-model menu spanning Claude, GPT, Gemini, Grok, DeepSeek, Llama, Qwen and Meta's Muse Spark, each shown with per-million-token prices.
- Built-in AGENTS.md optimizer and a catalog of 77 Cursor-native SKILL.md skills.
- The core workbench needs no account or payment and exports prompts as Markdown.
Cons
- The vault has no cloud sync; clearing browser data or switching devices loses saved prompts.
- Small library: 23 Express templates, against thousands in AIPRM or PromptBase.
- No documentation or pricing page beyond the directory submission terms, and the 'Contribute a prompt on GitHub' link returned a 404 when checked in October 2026.
- Free directory submissions wait on 24-48 hour manual review and a mandatory dofollow footer badge.
PromptHub
Pros
- The free plan includes unlimited team members, version control, batch testing, prompt chains and forms.
- Branches, commits and merge requests log every change to a prompt's text, parameters and model for review.
- Team-plan pipelines run evaluators on commits or merge requests and block versions that fail, guarding against secret leaks, profanity and regressions.
- One playground compares outputs from OpenAI, Anthropic, Azure, Google, Meta, Bedrock and Mistral models side by side.
- Heidi Health, an AI medical scribe company, reports 3x faster prompt testing after moving off spreadsheets and Jupyter notebooks.
Cons
- All free-plan prompts are public; private prompts start at $12/month for a single user.
- Evaluations and pipelines require the Team plan at $20 per user per month ($15 billed yearly).
- Model token costs are billed separately by the providers, and every plan caps LLM requests per month (2,000, 10,000 or 50,000).
- Signs of slower upkeep: the footer's API documentation link returned a 404 in October 2026, and the product blog's latest post is dated October 23, 2025.
Which fits your use case?
| Use case | Pick | Why |
|---|---|---|
| Solo developer drafting a system prompt for Claude on no budget | KingPrompt | KingPrompt is free with no account and compiles the prompt into XML-tag syntax for Claude with a token and cost estimate; PromptHub's free plan would make the prompt public. |
| Product team shipping an LLM feature with staging and production prompt versions | PromptHub | PromptHub branches map to environments such as staging and production, merge requests log every change, and apps fetch the latest commit through the /head endpoint. |
| Team that wants regression checks before a prompt reaches users | PromptHub | PromptHub Team pipelines, at $20/user/month or $15 billed yearly, run evaluators on commits and merge requests and block a version that misses its pass threshold. |
| Developer cleaning up an AGENTS.md file or looking for Cursor skills | KingPrompt | KingPrompt's AGENTS.md optimizer trims instruction files with free client-side heuristics, adds 10 AI deep scans a day after sign-in, and sits next to a catalog of 77 Cursor SKILL.md skills. |
| Choosing which model to run a prompt on | Tie | KingPrompt estimates cost per run from per-million-token prices for Anthropic, OpenAI, Google, xAI, Meta, DeepSeek and Qwen models, while PromptHub compares actual outputs side by side across seven providers. |
| Developer who works across a laptop and a desktop | PromptHub | KingPrompt's vault lives in one browser's local storage with no sync, while PromptHub keeps prompts in shared projects; private PromptHub prompts start at $12/month on Pro. |
Neither a match?
Both lists carry verified pricing and honest weaknesses for every option.
Popular comparisons
KingPrompt vs PromptHub: migration FAQ
Should I use KingPrompt or PromptHub?
- Use KingPrompt if you want a free, no-account workbench to build and compile individual prompts with cost estimates; use PromptHub if your team needs versioned, tested prompts served to an application through an API.
Is KingPrompt cheaper than PromptHub?
- Yes — KingPrompt's workbench is free with no paid user plan, while PromptHub charges $12/month (Pro) for private prompts and $20/user/month (Team) for evaluations and pipelines. PromptHub's free plan makes every prompt public.
Can PromptHub replace KingPrompt?
- Yes for writing, storing and testing prompts, especially in a team, but PromptHub's published features center on versioning, testing and deployment rather than KingPrompt's six-profile syntax compiler, cost-per-run estimate, AGENTS.md optimizer or Cursor skills catalog. Private prompts on PromptHub also start at $12/month.
Does KingPrompt save prompts to the cloud?
- No — KingPrompt saves prompts only in the browser's local storage, so clearing browser data or switching devices loses them, even after signing in. Prompts can be exported as Markdown files to keep copies.
Is PromptHub free?
- Yes, PromptHub has a free plan with unlimited team members and 2,000 requests a month, but every prompt on PromptHub's free plan is public. Model token costs are paid separately to providers such as OpenAI or Anthropic.