# a prompt versioning tool

**Prompt versioning is already crowded with live tools, but teams still want better branching, history, and compare workflows.**

Confidence: high  ·  123 signals  ·  checked 2026-08-01

[Full report with live links](https://showsitsworks.com/idea/prompt-versioning-tool)

## Who is already building this

*From data*

- Pezzo is a live open-source LLMOps platform for prompt design, version management, delivery, collaboration, troubleshooting, and observability; it has 3,262 stars and last pushed on 2026-07-29.
  - [pezzolabs/pezzo](https://github.com/pezzolabs/pezzo) `github` — 2023-04-22
- Promptify is a live Python project focused on prompt engineering and prompt versioning; it has 4,629 stars and last pushed on 2026-03-27.
  - [promptslab/Promptify](https://github.com/promptslab/Promptify) `github` — 2022-12-12
- PromptHub is a live TypeScript toolbox for prompt, skill, and agent management with cloud sync, backup, and version control; it has 1,548 stars and last pushed on 2026-07-31.
  - [legeling/PromptHub](https://github.com/legeling/PromptHub) `github` — 2025-11-29
- RESTai includes prompt versioning as part of a broader AIaaS platform; it has 513 stars and last pushed on 2026-08-02.
  - [apocas/restai](https://github.com/apocas/restai) `github` — 2023-05-18
- PromptLedger is a local-first prompt versioning project in SQLite, but the HN launch got only 2 points and the repo signal is weak compared with the larger incumbents.
  - [Show HN: PromptLedger – local-first prompt versioning in SQLite](https://news.ycombinator.com/item?id=47562328) `hackernews` — 2026-03-29
- Harpy is a dead competitor: it has 2,599 stars, but its last push was 2018-12-27.
  - [ArtSabintsev/Harpy](https://github.com/ArtSabintsev/Harpy) `github` — 2012-11-14

## What people actually say

*From data*

- "I have a prompt for a content rewriting task. I want to experiment with two very different methodologies" — a Langfuse issue asking for branches because linear prompt versioning breaks non-linear exploration.
  - [feat(prompt-management): Add branch support for prompt versioning](https://github.com/langfuse/langfuse/issues/11997) `githubissues` — 2026-02-12
- "I guess I'm not the only one who messed up a perfect running prompt to smithereens my changing a tiny bit in the system prompt." — a Discourse user describing how fragile prompt edits are.
  - [Versioning for the LLM system prompt](https://community.home-assistant.io/t/versioning-for-the-llm-system-prompt/832316) `discourse` — 2025-01-19
- "I have been trying to build a proper evaluation pipeline for months but every tool we've tested has significant limitations." — an HN commenter on AI eval tooling, which overlaps with prompt iteration and version comparison.
  - [Ask HN: What tools are you using for AI evals? Everything feels half-baked](https://news.ycombinator.com/item?id=44194187) `hackernews` — 2025-06-05
- "How are you cataloging, maintaining, versioning your prompts?" — an HN user explicitly asking for prompt workflow advice.
  - [Ask HN: How are you managing your prompts?](https://news.ycombinator.com/item?id=43753180) `hackernews` — 2025-04-21
- "Prompt engineering today is mostly trial and error." — an HN launch post for a prompt testing tool, showing the pain around iterating prompts.
  - [Show HN: Asserto AI – Write and test LLM prompts with assertions](https://news.ycombinator.com/item?id=43878614) `hackernews` — 2025-05-03
- "The closest I've found is..." — an HN user looking for a collaborative prompt-writing playground with versioning, history, and evaluation.
  - [Ask HN: Seeking a collaborative LLM prompt-writing playground, hitting dead end](https://news.ycombinator.com/item?id=41522870) `hackernews` — 2024-09-12

## People asking to be sold to

*From data*

- "I would love to see a prompt management tool like this either integrated into flowise or leveraging Langfuse." — direct demand for integration, not just a nice-to-have.
  - [Prompt Versioning & Management Integration](https://github.com/FlowiseAI/Flowise/issues/4462) `githubissues` — 2025-05-19
- "Use a prompt version control to track different prompt versions and rollback more easily." — a GitHub issue stating the core purchase reason in plain terms.
  - [job chat: Prompt versioning tool](https://github.com/OpenFn/apollo/issues/107) `githubissues` — 2024-11-12
- "Support prompt versioning and labeling. It should include prompt version which will display single prompt with multiple version and a label like dev, qa, prod or custom label." — a feature request for a productized workflow.
  - [(Feature): LiteLLM support for prompt versioning](https://github.com/BerriAI/litellm/issues/16233) `githubissues` — 2025-11-04
- "Store immutable snapshots of each saved prompt state and allow restore." — a spec-level request for version history and rollback.
  - [Prompt versioning & history (VersionHistory)](https://github.com/pakbaz/HelloWorld/issues/8) `githubissues` — 2026-06-11
- "Enable A/B comparison of prompt variants on the same historical data to measure the impact of prompt changes" — users want compare workflows, not just storage.
  - [Implement prompt versioning integration for A/B comparison](https://github.com/PatrickFanella/augr/issues/311) `githubissues` — 2026-03-25
- "Version control feature for the instructions" — a user asking for team-scale prompt versioning in a shared workspace.
  - [I need prompt version control feature & powerful UI for integrating third-party APIs for my company custom GPTs](https://community.openai.com/t/i-need-prompt-version-control-feature-powerful-ui-for-integrating-third-party-apis-for-my-company-custom-gpts/1228955) `discourse` — 2025-04-10

## Where the opening is

*Model estimate*

- The clearest gap is not basic prompt storage; it is branching, side-by-side comparison, and restore flows that work when teams try fundamentally different prompt approaches rather than a linear edit history.
  - [feat(prompt-management): Add branch support for prompt versioning](https://github.com/langfuse/langfuse/issues/11997) `githubissues` — 2026-02-12
  - [Prompt versioning & history (VersionHistory)](https://github.com/pakbaz/HelloWorld/issues/8) `githubissues` — 2026-06-11
  - [Implement prompt versioning integration for A/B comparison](https://github.com/PatrickFanella/augr/issues/311) `githubissues` — 2026-03-25
- Several tools cover prompt versioning inside larger LLMOps platforms, but the signals do not show a focused product that treats prompt branches, labels like dev/qa/prod, and compare runs as the primary workflow.
  - [pezzolabs/pezzo](https://github.com/pezzolabs/pezzo) `github` — 2023-04-22
  - [legeling/PromptHub](https://github.com/legeling/PromptHub) `github` — 2025-11-29
  - [apocas/restai](https://github.com/apocas/restai) `github` — 2023-05-18
  - [(Feature): LiteLLM support for prompt versioning](https://github.com/BerriAI/litellm/issues/16233) `githubissues` — 2025-11-04
- There is also an implied gap for collaborative, non-technical-friendly prompt versioning; one HN user explicitly wanted a shared playground with versioning, history tracking, and dataset evaluation, but only found partial fits.
  - [Ask HN: Seeking a collaborative LLM prompt-writing playground, hitting dead end](https://news.ycombinator.com/item?id=41522870) `hackernews` — 2024-09-12
- The data does not show an unmet need for 'prompt versioning' in general; it shows demand for safer iteration, branch management, and evaluation around prompt changes.
  - [Versioning for the LLM system prompt](https://community.home-assistant.io/t/versioning-for-the-llm-system-prompt/832316) `discourse` — 2025-01-19
  - [job chat: Prompt versioning tool](https://github.com/OpenFn/apollo/issues/107) `githubissues` — 2024-11-12
  - [Ask HN: How are you managing your prompts?](https://news.ycombinator.com/item?id=43753180) `hackernews` — 2025-04-21
  - [Implement prompt versioning integration for A/B comparison](https://github.com/PatrickFanella/augr/issues/311) `githubissues` — 2026-03-25

## How big the market might be

*Model estimate*

- This search found 12 named open-source projects, with 8 active, 2 dead, and 2 slow.
  - [Piebald-AI/claude-code-system-prompts](https://github.com/Piebald-AI/claude-code-system-prompts) `github` — 2025-11-18
  - [promptslab/Promptify](https://github.com/promptslab/Promptify) `github` — 2022-12-12
  - [ArtSabintsev/Siren](https://github.com/ArtSabintsev/Siren) `github` — 2015-01-03
  - [pezzolabs/pezzo](https://github.com/pezzolabs/pezzo) `github` — 2023-04-22
  - [ArtSabintsev/Harpy](https://github.com/ArtSabintsev/Harpy) `github` — 2012-11-14
  - [legeling/PromptHub](https://github.com/legeling/PromptHub) `github` — 2025-11-29
  - [larryaasen/upgrader](https://github.com/larryaasen/upgrader) `github` — 2018-12-03
  - [apocas/restai](https://github.com/apocas/restai) `github` — 2023-05-18
  - [badlogic/cchistory](https://github.com/badlogic/cchistory) `github` — 2025-08-02
  - [WEIFENG2333/phistory](https://github.com/WEIFENG2333/phistory) `github` — 2026-05-21
  - [KinetiNode/claude-fable-5-system-prompt-clean](https://github.com/KinetiNode/claude-fable-5-system-prompt-clean) `github` — 2026-07-19
  - [elder-plinius/Google-Gemini-System-Prompt](https://github.com/elder-plinius/Google-Gemini-System-Prompt) `github` — 2023-12-06
- The largest repo in the set has 12,143 stars, and other live projects are also well above hobby scale, including 4,629 stars, 4,295 stars, 3,742 stars, 3,262 stars, and 1,548 stars.
  - [Piebald-AI/claude-code-system-prompts](https://github.com/Piebald-AI/claude-code-system-prompts) `github` — 2025-11-18
  - [promptslab/Promptify](https://github.com/promptslab/Promptify) `github` — 2022-12-12
  - [ArtSabintsev/Siren](https://github.com/ArtSabintsev/Siren) `github` — 2015-01-03
  - [Hunyuan-PromptEnhancer/PromptEnhancer](https://github.com/Hunyuan-PromptEnhancer/PromptEnhancer) `github` — 2025-09-09
  - [pezzolabs/pezzo](https://github.com/pezzolabs/pezzo) `github` — 2023-04-22
  - [legeling/PromptHub](https://github.com/legeling/PromptHub) `github` — 2025-11-29
- There were 40 first-hand complaints and 0 unsolved questions, spread across 6 matching communities: community.home-assistant.io, community.openai.com, discuss.elastic.co, discuss.python.org, forum.djangoproject.com, and meta.discourse.org.
  - [Versioning for the LLM system prompt](https://community.home-assistant.io/t/versioning-for-the-llm-system-prompt/832316) `discourse` — 2025-01-19
  - ["View code" for responses API does not use prompt_id and prompt_version](https://community.openai.com/t/view-code-for-responses-api-does-not-use-prompt-id-and-prompt-version/1353997) `discourse` — 2025-08-22
  - [Removal of arrows to navigate between prompt versions](https://community.openai.com/t/removal-of-arrows-to-navigate-between-prompt-versions/1382047) `discourse` — 2026-05-30
  - [Aug 3 version prompts regenerate when pasting code, gets stuck, resets after 5-10 mins](https://community.openai.com/t/aug-3-version-prompts-regenerate-when-pasting-code-gets-stuck-resets-after-5-10-mins/317042) `discourse` — 2023-08-06
  - [I need prompt version control feature & powerful UI for integrating third-party APIs for my company custom GPTs](https://community.openai.com/t/i-need-prompt-version-control-feature-powerful-ui-for-integrating-third-party-apis-for-my-company-custom-gpts/1228955) `discourse` — 2025-04-10
  - [Switching between different versions of a prompt doesn't work when the response to one of them had multiple parts (was "continued")](https://community.openai.com/t/switching-between-different-versions-of-a-prompt-doesnt-work-when-the-response-to-one-of-them-had-multiple-parts-was-continued/983921) `discourse` — 2024-10-18
- There is usage, not just interest, in adjacent tooling: npm packages for prompt versioning show 15,287 monthly downloads for opencode-plugin-langfuse, 285 for @eidentic/prompts, 91 for @talocode/promptlane, 88 for @orqo/foundationmodels-eval, 41 for @orka-js/prompts, and 15 for prompt-version.
  - [npm: opencode-plugin-langfuse](https://www.npmjs.com/package/opencode-plugin-langfuse) `registries` — 2026-01-21
  - [npm: @eidentic/prompts](https://www.npmjs.com/package/@eidentic/prompts) `registries` — 2026-07-11
  - [npm: @orqo/foundationmodels-eval](https://www.npmjs.com/package/@orqo/foundationmodels-eval) `registries` — 2026-07-18
  - [npm: @orka-js/prompts](https://www.npmjs.com/package/@orka-js/prompts) `registries` — 2026-04-07
  - [npm: @talocode/promptlane](https://www.npmjs.com/package/@talocode/promptlane) `registries` — 2026-07-17
  - [npm: prompt-version](https://www.npmjs.com/package/prompt-version) `registries` — 2026-03-23
- The HN side is active but not huge: threads here show 94 points and 31 comments for Openlayer, 8 comments on prompt management questions, and smaller launch posts around prompt versioning tools.
  - [Launch HN: Openlayer (YC S21) – Testing and Evaluation for AI](https://news.ycombinator.com/item?id=38532593) `hackernews` — 2023-12-05
  - [How do you manage prompt versioning and iteration?](https://news.ycombinator.com/item?id=47003317) `hackernews` — 2026-02-13
  - [Ask HN: What tools are you using for AI evals? Everything feels half-baked](https://news.ycombinator.com/item?id=44194187) `hackernews` — 2025-06-05
  - [Show HN: OXPT – Visual branching canvas for prompt versioning (Korean support)](https://news.ycombinator.com/item?id=47263773) `hackernews` — 2026-03-05
  - [Show HN: EvalsHub: Your AI is failing in production and you don't know it](https://news.ycombinator.com/item?id=47458726) `hackernews` — 2026-03-20
  - [Show HN: Standardising 'Unit Tests' for Prompts](https://news.ycombinator.com/item?id=43525158) `hackernews` — 2025-03-30
  - [Ask HN: How are you managing your prompts?](https://news.ycombinator.com/item?id=43753180) `hackernews` — 2025-04-21
  - [Show HN: PromptOps – Git-native prompt management for LLMs](https://news.ycombinator.com/item?id=44445237) `hackernews` — 2025-07-02
  - [Show HN: Folio: Prompt management tool with versioning and templating](https://news.ycombinator.com/item?id=42077586) `hackernews` — 2024-11-07
  - [Show HN: I made PromptForge – a tool to build and manage intelligent AI prompts](https://news.ycombinator.com/item?id=44233990) `hackernews` — 2025-06-10
  - [Show HN: Promptorium, a Versioning System for LLM Prompts](https://news.ycombinator.com/item?id=45967723) `hackernews` — 2025-11-18
  - [Show HN: Asserto AI – Write and test LLM prompts with assertions](https://news.ycombinator.com/item?id=43878614) `hackernews` — 2025-05-03

## What could go wrong

*Model estimate*

- This is a crowded category with several active open-source competitors and some well-funded or broader LLMOps platforms already bundling versioning.
  - [Piebald-AI/claude-code-system-prompts](https://github.com/Piebald-AI/claude-code-system-prompts) `github` — 2025-11-18
  - [promptslab/Promptify](https://github.com/promptslab/Promptify) `github` — 2022-12-12
  - [pezzolabs/pezzo](https://github.com/pezzolabs/pezzo) `github` — 2023-04-22
  - [legeling/PromptHub](https://github.com/legeling/PromptHub) `github` — 2025-11-29
  - [apocas/restai](https://github.com/apocas/restai) `github` — 2023-05-18
- A lot of the demand may be absorbed as a feature inside existing products like Langfuse-style platforms rather than as a standalone tool.
  - [Prompt Versioning & Management Integration](https://github.com/FlowiseAI/Flowise/issues/4462) `githubissues` — 2025-05-19
  - [(Feature): LiteLLM support for prompt versioning](https://github.com/BerriAI/litellm/issues/16233) `githubissues` — 2025-11-04
  - [Best Prompt Versioning Tools for Production Teams (2026) - Articles - Braintrust](https://www.braintrust.dev/articles/best-prompt-versioning-tools-2025) `tavily`
  - [Ask HN: Seeking a collaborative LLM prompt-writing playground, hitting dead end](https://news.ycombinator.com/item?id=41522870) `hackernews` — 2024-09-12
- The biggest dead-simple versioning problem is already understood, so a new product that only does linear history and rollback will look interchangeable.
  - [feat(prompt-management): Add branch support for prompt versioning](https://github.com/langfuse/langfuse/issues/11997) `githubissues` — 2026-02-12
  - [Prompt versioning & history (VersionHistory)](https://github.com/pakbaz/HelloWorld/issues/8) `githubissues` — 2026-06-11
  - [Implement prompt versioning integration for A/B comparison](https://github.com/PatrickFanella/augr/issues/311) `githubissues` — 2026-03-25
- Some search results are about unrelated prompt-upgrade apps or system-prompt leaks, so the market is noisy and easy to overread if you do not stay narrow.
  - [ArtSabintsev/Siren](https://github.com/ArtSabintsev/Siren) `github` — 2015-01-03
  - [ArtSabintsev/Harpy](https://github.com/ArtSabintsev/Harpy) `github` — 2012-11-14
  - [larryaasen/upgrader](https://github.com/larryaasen/upgrader) `github` — 2018-12-03
  - [KinetiNode/claude-fable-5-system-prompt-clean](https://github.com/KinetiNode/claude-fable-5-system-prompt-clean) `github` — 2026-07-19
  - [elder-plinius/Google-Gemini-System-Prompt](https://github.com/elder-plinius/Google-Gemini-System-Prompt) `github` — 2023-12-06

## What to do this week

*Model estimate*

- Build around branching and compare-runs first, not just save/version/restore. That is the strongest repeated pain in the signals.
  - [feat(prompt-management): Add branch support for prompt versioning](https://github.com/langfuse/langfuse/issues/11997) `githubissues` — 2026-02-12
  - [Prompt versioning & history (VersionHistory)](https://github.com/pakbaz/HelloWorld/issues/8) `githubissues` — 2026-06-11
  - [Implement prompt versioning integration for A/B comparison](https://github.com/PatrickFanella/augr/issues/311) `githubissues` — 2026-03-25
- Make the product opinionated about labels and environments like dev, qa, and prod, since users explicitly asked for that model.
  - [(Feature): LiteLLM support for prompt versioning](https://github.com/BerriAI/litellm/issues/16233) `githubissues` — 2025-11-04
- Support immutable snapshots, diffing, and fast restore from day one; those are the clearest concrete requirements people asked for.
  - [job chat: Prompt versioning tool](https://github.com/OpenFn/apollo/issues/107) `githubissues` — 2024-11-12
  - [Prompt versioning & history (VersionHistory)](https://github.com/pakbaz/HelloWorld/issues/8) `githubissues` — 2026-06-11
  - [Document prompt versioning and run comparison workflows](https://github.com/AgentFoundryExamples/prompt-evaluator/issues/39) `githubissues` — 2025-12-22
- If you want a wedge, target teams already using Langfuse, Flowise, LiteLLM, or similar tooling and give them a better prompt-branch workflow rather than a whole new LLMOps stack.
  - [Prompt Versioning & Management Integration](https://github.com/FlowiseAI/Flowise/issues/4462) `githubissues` — 2025-05-19
  - [(Feature): LiteLLM support for prompt versioning](https://github.com/BerriAI/litellm/issues/16233) `githubissues` — 2025-11-04
  - [Best Prompt Versioning Tools for Production Teams (2026) - Articles - Braintrust](https://www.braintrust.dev/articles/best-prompt-versioning-tools-2025) `tavily`
- Do not start with a generic prompt library; the market signals point to workflow and governance problems, not prompt authoring alone.
  - [Versioning for the LLM system prompt](https://community.home-assistant.io/t/versioning-for-the-llm-system-prompt/832316) `discourse` — 2025-01-19
  - [Ask HN: How are you managing your prompts?](https://news.ycombinator.com/item?id=43753180) `hackernews` — 2025-04-21
  - [I need prompt version control feature & powerful UI for integrating third-party APIs for my company custom GPTs](https://community.openai.com/t/i-need-prompt-version-control-feature-powerful-ui-for-integrating-third-party-apis-for-my-company-custom-gpts/1228955) `discourse` — 2025-04-10
  - [Ask HN: Seeking a collaborative LLM prompt-writing playground, hitting dead end](https://news.ycombinator.com/item?id=41522870) `hackernews` — 2024-09-12

## Competitor strength

| Project | Stars | Downloads/mo | Activity |
|---|---:|---:|---|
| [Piebald-AI/claude-code-system-prompts](https://github.com/Piebald-AI/claude-code-system-prompts) | 12,143 | — | active |
| [promptslab/Promptify](https://github.com/promptslab/Promptify) | 4,629 | — | slow |
| [ArtSabintsev/Siren](https://github.com/ArtSabintsev/Siren) | 4,295 | — | active |
| [Hunyuan-PromptEnhancer/PromptEnhancer](https://github.com/Hunyuan-PromptEnhancer/PromptEnhancer) | 3,742 | — | active |
| [pezzolabs/pezzo](https://github.com/pezzolabs/pezzo) | 3,262 | — | active |
| [ArtSabintsev/Harpy](https://github.com/ArtSabintsev/Harpy) | 2,599 | — | dead |
| [legeling/PromptHub](https://github.com/legeling/PromptHub) | 1,548 | — | active |
| [larryaasen/upgrader](https://github.com/larryaasen/upgrader) | 640 | — | active |
| [apocas/restai](https://github.com/apocas/restai) | 513 | — | active |
| [badlogic/cchistory](https://github.com/badlogic/cchistory) | 484 | — | slow |
| [receyuki/comfyui-prompt-reader-node](https://github.com/receyuki/comfyui-prompt-reader-node) | 462 | — | dead |
| [WEIFENG2333/phistory](https://github.com/WEIFENG2333/phistory) | 457 | — | active |

## Domain names

- `promptversioning.com` — taken
- `promptversioning.io` — available
- `prompt.com` — taken
- `getprompt.com` — taken

---

Sources searched: hackernews (30), github (20), githubissues (20), discourse (20), intent (none), stackexchange (none), registries (15), tavily (8), devto (10)

Generated by Shows Its Work — https://showsitsworks.com/idea/prompt-versioning-tool
Findings link to their sources. Estimates are marked as estimates.