Langfuse vs PromptForge
Langfuse
langfuse.com
PromptForge
promptforge-app.comSide by side
| Figure | Langfuse | PromptForge |
|---|---|---|
| Price from | $29/mo | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 10 | 4 |
| Spec score · Prompt Management Software | 9.2 (#3) | 7.9 (#13) |
| Integrations | Langfuse lists more than 100 integrations spanning OpenTelemetry, Python and TypeScript, model providers, agent frameworks, gateways, and developer tools. | The integrations page lists providers and tools including OpenAI, Anthropic Claude, Google Gemini, Grok, Groq, Mistral, Vercel AI SDK, Ollama, Cohere, Together AI, Azure OpenAI, and AWS Bedrock. |
| Security | Langfuse reports annual SOC 2 Type II and ISO 27001 audits, external penetration tests, encryption, access controls, GDPR compliance, and a HIPAA-ready region. | The privacy policy describes bcrypt password hashing, SHA-256 plus peppered API-key hashing, rate limiting, expiring session tokens, user-scoped access controls, and encryption at rest and in transit where provided by processors. |
| Support | Hobby includes community support via GitHub, Core includes in-app support, Pro includes prioritized in-app support, and Enterprise includes support SLA and a named lead support engineer. | The terms direct users to contact Mavity by email with questions. |
Plans
Langfuse
- HobbyFree
- HobbyFree
- Core$29 a month
- Core$29 a month
- Pro$199 a month
- Pro$199 a month
- Teams Add-on$300 a month
- Teams Add-on$300 a month
- Enterprise$2,499 a month
- Enterprise$2,499 a month
In their own words
Langfuse
Langfuse is an open-source AI engineering platform for teams debugging, analyzing, and iterating on AI agent applications. Its tracing records prompts, model responses, token use, latency, tool calls, retrieval steps, and metadata. Prompt Management stores, versions, deploys, and tests prompts, then links them to traces. Evaluation features include LLM-as-a-judge, code evaluators, user feedback, manual labeling, datasets, and experiments. Integrations include Python and JS/TS SDKs, OpenTelemetry, an API, CLI, MCP Server, and popular AI frameworks. Teams can self-host the MIT-licensed core on customer infrastructure using Docker, with options including Docker Compose, Kubernetes, AWS, and Azure. Langfuse reports annual SOC 2 Type 2 and ISO 27001 audits, external penetration tests, GDPR compliance, a DPA, and a HIPAA-ready region. Its Cloud traffic uses TLS 1.2+ and stored data uses AES-256 encryption. The free Hobby plan is free and includes 50k units per month, 30 days of data access, two users, and community support via GitHub. Core costs $29 a month, billed monthly.
PromptForge
PromptForge manages AI prompt templates and makes them available through a REST API. It is aimed at AI developers who want to update prompt text without redeploying application code. Templates can include reusable placeholders using {{variable}} syntax. Each edit creates an immutable version, and users can compare line-by-line changes and roll back. Applications can request a stable, latest, or specific prompt version; API requests use Bearer token authentication and GET or POST methods. Listed integrations include OpenAI, Anthropic Claude, Google Gemini, Grok, Groq, Mistral, Vercel AI SDK, Ollama, Cohere, Together AI, Azure OpenAI, and AWS Bedrock. PromptForge stores, organizes, versions, and shares text prompts; it does not perform AI generation, analysis, or training. The free Hobby plan is billed forever and allows one production prompt and 1,000 API requests per month. Starter costs $9 a month, Pro $29 a month, and Business $49 a month. The terms state that there is no export feature or formal SLA or uptime credits.