Langfuse
Helicone AI
LangSmith
LangChain
PromptLayer
Portkey
Braintrust.dev
Openlayer
PDFMakerAPI
APITemplate.io
CraftMyPDF
PDF Generator API
Langfuse is an open-source LLM engineering platform designed to empower developers by providing insights into user interactions with their LLM applications. We offer tools that help developers understand usage patterns, diagnose issues, and improve application performance based on real user data. By integrating seamlessly into existing workflows, Langfuse streamlines the process of monitoring, debugging, and optimizing LLM applications. Our platform's robust documentation and active community support make it easy for developers to leverage Langfuse for enhancing their LLM projects efficiently. Whether you're troubleshooting interactions or iterating on new features, Langfuse is committed to simplifying your LLM development journey.
PDFMakerAPI is a PDF template builder and PDF generation API. Instead of hard-coding documents or wrestling with HTML-to-PDF converters that break when your content changes, you design a reusable template once in a visual, no-code editor — placing text, tables, images, and dynamic fields exactly where you want them — then feed it data to produce a finished, editable PDF.
Generate a single document or thousands. Fill a template in yourself, share a link so anyone completes it in the browser as a fillable PDF form, send JSON to the REST API, trigger generation from no-code tools like Zapier, Make, and n8n, or create documents straight from AI agents like Claude and ChatGPT. Prefer to start from a prompt? Describe what you need and let Quill build it.
Teams use PDFMakerAPI for invoices, receipts, certificates, reports, and contracts — anything you'd otherwise rebuild by hand every time the data changes. Start building free with 100 PDFs a month.
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Based on our record, Langfuse seems to be more popular. It has been mentiond 32 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Langfuse is the other serious option in this category if you also want observability, evals and traces bundled with prompt management. Different scope, more setup, worth comparing honestly. - Source: dev.to / 8 days ago
Langfuse with Microsoft.Extensions.AI has an appealing story: update prompts without redeploying. A prompt fetches its config blob—model, tokens, temperature—which the code passes straight to the LLM. - Source: dev.to / 11 days ago
Langfuse is not a replacement for OpenTelemetry; it is a specialization layer built on top of it. Langfuse was engineered specifically for the unique telemetry needs of LLM applications. It acts as the semantic layer that OTel lacks. - Source: dev.to / 16 days ago
Langfuse and LangSmith exist for this. Use them. The 30 minutes you spend setting up observability saves you the 87 hours you'd spend debugging blind. - Source: dev.to / 29 days ago
In this project we will build a Python banking assistant agent using Strands Agents and make it observable and continuously evaluated using Langfuse — step by step. - Source: dev.to / 2 months ago
Helicone AI - Open-source LLM Observability for Developers
APITemplate.io - APITemplate.io allows you to auto-generate social images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML required.
LangSmith - Build and deploy LLM applications with confidence
CraftMyPDF - PDF generation API for developers who ship fast.
LangChain - Framework for building applications with LLMs through composability
PDF Generator API - Generate PDF documents from templates and JSON data. Enable your users to create PDFs and manage document templates using a browser-based drag-and-drop editor!
