# ChainForge vs Promptmetheus

**Leader by Vioscale score:** Promptmetheus

| Attribute | ChainForge | Promptmetheus |
|---|---|---|
| **Vioscale score** | 36.9 (32% (low)) | 55.1 (66% (medium)) |
| activity.commits_last_30d | 0 | - |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 3,027 | - |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | An open-source platform that enables users to experiment with multiple language models, compare outputs across different prompts and settings, and evaluate LLM quality without requiring extensive coding knowledge. | A platform for building structured prompts through modular components, testing across 150+ language models, evaluating outputs, and enabling teams to collaboratively develop shared prompt libraries and workflows. |
| features.capabilities | `{"ab_testing":true,"pricing_model":"open-source-self-host","self_hostable":true,"deployment_model":"self-hosted","multi_step_flows":true,"non_engineer_editing":true,"multi_model_playground":true,"llm_judge_or_human_eval":true}` | `{"ab_testing":true,"pricing_model":"usage/seat-based-saas","deployment_model":"managed-SaaS","multi_step_flows":true,"tracing_included":true,"versioning_model":"UI-hosted registry","diff_and_rollback":true,"non_engineer_editing":true,"multi_model_playground":true,"llm_judge_or_human_eval":true}` |
| integrations.count | 5 | - |
| integrations.list | `[{"name":"OpenAI"},{"name":"Google Gemini"},{"name":"Alpaca"},{"name":"Llama"},{"name":"Dalai"}]` | - |
| language.primary | TypeScript | - |
| license.spdx | MIT | - |
| market.availability | - | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","summary":"Open source and free to use","freeTier":true,"sourceUrl":"https://chainforge.ai","retrievedAt":"2026-08-21T11:06:45.686Z"}` | `{"type":"subscription","plans":[{"free":false,"name":"Team","summary":"$19/month per additional user","components":[{"kind":"per_unit","unit":"seat","amount":19,"period":"month","currency":"USD"}],"description":"Team collaboration with shared workspaces","contactSales":false},{"free":false,"name":"Enterprise","contactSales":true}],"summary":"7-day free trial. $19/month per additional user. Enterprise available.","currency":"USD","freeTier":false,"sourceUrl":"https://promptmetheus.com","retrievedAt":"2026-08-21T11:09:39.935Z","freeTrialDays":7,"startingPrice":{"unit":"seat","amount":19,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | yes | no |
| pricing.model | open_source | commercial |
| pricing.price_level | free | mid |
| pricing.starting_price | - | `{"amount":19,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| release.cadence_days | 24 | - |
| release.history | `[{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3.6","date":"2025-05-11T19:44:26Z","type":"stable","version":"v0.3.6"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3.5","date":"2025-04-15T03:10:54Z","type":"stable","version":"v0.3.5"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3.4","date":"2025-02-28T19:59:33Z","type":"stable","version":"v0.3.4"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3.2.5","date":"2024-12-19T20:51:44Z","type":"stable","version":"v0.3.2.5"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3.1.5","date":"2024-04-25T18:01:52Z","type":"stable","version":"v0.3.1.5"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3.1","date":"2024-03-31T02:59:20Z","type":"stable","version":"v0.3.1"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.3","date":"2024-03-06T04:30:09Z","type":"stable","version":"v0.3"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/add-prettier","date":"2024-02-24T16:50:10Z","type":"stable","version":"add-prettier"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.9.5","date":"2024-01-20T01:49:21Z","type":"stable","version":"v0.2.9.5"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.8.9","date":"2024-01-08T23:53:59Z","type":"stable","version":"v0.2.8.9"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.8","date":"2023-12-13T19:03:09Z","type":"stable","version":"v0.2.8"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.6.5","date":"2023-10-23T20:55:41Z","type":"stable","version":"v0.2.6.5"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.6","date":"2023-08-27T19:43:31Z","type":"stable","version":"v0.2.6"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/docs","date":"2023-08-05T15:45:55Z","type":"stable","version":"docs"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.5","date":"2023-07-26T16:21:13Z","type":"stable","version":"v0.2.5"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.1.2","date":"2023-07-19T21:35:37Z","type":"stable","version":"v0.2.1.2"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2.1","date":"2023-07-12T21:33:20Z","type":"stable","version":"v0.2.1"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.2","date":"2023-06-30T19:15:52Z","type":"stable","version":"v0.2"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.1.7.2","date":"2023-06-23T13:38:30Z","type":"stable","version":"v0.1.7.2"},{"url":"https://github.com/ianarawjo/ChainForge/releases/tag/v0.1.7","date":"2023-06-21T14:25:53Z","type":"stable","version":"v0.1.7"}]` | - |
| reliability.status_page | - | yes |
| security.gdpr | - | yes |
| security.pci | - | yes |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fianarawjo%2Fchainforge&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Prompt Management)

| Capability | ChainForge | Promptmetheus |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Versioning model | - | UI hosted registry |
| Diff and rollback | - | ✓ |
| Deploy without redeploy | - | - |
| Non engineer editing | ✓ | ✓ |
| Multi model playground | ✓ | ✓ |
| Ab testing | ✓ | ✓ |
| LLM judge or human eval | ✓ | ✓ |
| Multi step flows | ✓ | ✓ |
| Approval workflow | - | - |
| Tracing included | - | ✓ |
| Self hostable | ✓ | - |
| Deployment model | Self hosted | Managed SaaS |
| Pricing model | Open source self host | Usage/seat based saas |

*Source: Vioscale. Generated 2026-09-01T17:07:14.168Z. "-" = undocumented, not absent.*