Helicone AI
Langfuse
LangSmith
Portkey
liteLLM
Eden AI
OpenRouter
LangChain
PDFMakerAPI
APITemplate.io
CraftMyPDF
PDF Generator API
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.
Helicone AI PDFMakerAPIBased on our record, Helicone AI seems to be more popular. It has been mentiond 5 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.
Helicone takes the simplest possible approach to LLM monitoring: it's a proxy. Change your OpenAI base URL from api.openai.com to oai.helicone.ai, add your Helicone API key as a header, and every LLM request is logged — latency, tokens, cost, prompts, and completions. No SDK integration, no code changes beyond a URL swap. - Source: dev.to / 3 months ago
You're monitoring production traffic. You need Langfuse / Phoenix / Helicone / Braintrust for that. Online eval is a different problem class: implicit feedback, drift detection, hallucination rates on your data, not on HellaSwag. - Source: dev.to / 3 months ago
For many teams, especially those starting out or with simpler needs, commercial solutions like Portkey, Helicone, OpenPipe, or LiteLLM Proxy offer off-the-shelf capabilities that cover many common proxy use cases (caching, logging, cost tracking). NeuroLink itself can be seen as an SDK that complements these, allowing you to integrate with them or build similar features on top. - Source: dev.to / 5 months ago
TL;DR: Go with Langfuse if you want open-source and self-hosted. Pick Helicone if you want the fastest setup (2 minutes, no SDK). Stick with LangSmith if your stack already runs on LangChain. And if your org already pays for Datadog, their LLM module slots right in. - Source: dev.to / 6 months ago
Hey HN, we're Justin and Cole, the founders of Helicone (https://helicone.ai) or self-deploy with our new fully open-source helm chart (https://helicone.ai/selfhost). Yet even with detailed traces, probabilistic systems are notoriously hard to debug at scale. So, we released evaluators (either via LLM-as-judge or custom Python evaluators leveraging the CodeSandbox SDK - https://codesandbox.io/docs/sdk/sandboxes).... - Source: Hacker News / over 1 year ago
Langfuse - Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
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.
Portkey - Build production-grade & reliable AI apps with Portkey
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!