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Alternatives

Products that do what Relari – Auto Prompt Optimizer as Lightweight Alternative to Finetuning does

Hi HN, we are the founders of Relari (https://www.relari.ai). We launched our LLM evaluation stack on HN a few months ago (https://news.ycombinator.com/item?id=39641105), which is now used in production by AI teams at companies like Vanta and PwC. We have since expanded to directly optimizing parts of an LLM pipeline using a data-driven approach. In particular, we see a lot of potential in the Auto Prompt Optimization—which could be an attractive alternative to fine-tuning in many cases—to use data to align LLMs for domain-specific tasks. Here’s a demo video:…

  1. 1

    An AI Cost Optimization Infrastructure for LLM Applications

    Mar 2026

  2. 2
    Pioneer113

    Fine-tune any LLM in minutes, with one prompt

    Apr 2026

  3. 3

    LLM reinforcement fine-tuning platform to improve LLM output

    2025

  4. 4

    Like Ahrefs for LLM optimization

    2024

  5. 5
    Taylor AI118

    Fine-tune open source LLMs in minutes

    2023

  6. 6

    AI Prompt Generator, Optimizer & Library

    2025

  7. 7

    The context manager and skills library for marketing teams

    Apr 2026

  8. 8HP

    Hi HN. I heard you like dev tools and AI, so we wanted to share our project that we’ve been working on. We’re working on Horizon [1] - a higher level abstraction for LLMs so that developers can spend less time trying to grapple with LLMs to make them work and more time with users. This is the starting feature set which takes an auto-ML approach to identify the optimal LLM model, hyperparameters, and prompt - instead of just giving you the tooling to figure it out yourself. You can read more about it in our documentations. Our view is that as LLMs become increasingly commoditized and prompts…

    2023 · gethorizon.ai

  9. 9

    AI fine-tuning platform to create custom LLMs

    2024

  10. 10

    Intelligently cut token costs by 80% in AI context workflows

    2025

  11. 11

    Fine-tuning, RL, and inference in one CLI

    Dec 2025

  12. 12PR

    Hi HN, While building RAG agents, I noticed a lot of token budget was wasted on formatting overhead (HTML tags, JSON structure, whitespace). Existing solutions felt too heavy (often requiring torch&#x2F;transformers), so I wrote this lightweight, zero-dependency library to solve it. It includes strategies for context packing, PII redaction, and tool output compression. Benchmarks show it can save ~15% of tokens with negligible latency overhead (<0.5ms). Happy to answer any questions!

    Dec 2025 · github.com

  13. 13

    Intelligent LLM Cost Optimization Platform

    Mar 2026

  14. 14

    Prompt Optimization for Vibe Coding

    Mar 2026

  15. 15

    Run local LLMs faster and smoother on your device

    May 2026

  16. 16AO

    Hi, We are building an open-source framework for loading and structuring LLM context to create accurate and explainable LLM answers using knowledge graphs and vector stores. We built the tool with four main concepts in mind: 1. Loader -> uses dlt in the backend to load and structure the data 2. Cognify step -> creates a graph with summaries, labels and factoids that are interconnected across the documents and stored as a representation in the vector store 3. Optimizer -> Uses DSPy to optimize LLM queries, and we plan to extend it to most of the knobs we can turn, like chunking etc. 4. Search…

    2024 · github.com

  17. 17PR
  18. 18

    From idea to optimized AI prompt – structured & fast

    Feb 2026

  19. 19
    VizPy27

    Turn prompt failures into executable rules — for AI agents

    Mar 2026

  20. 20HL

    At testup.io we have been working for a while to bring artificial intelligence to the field of test automation. Just a few years ago, the primary challenge laid in accurately identifying UI elements following minor structural changes, such as updates to IDs or paths. The emergence of Large Language Models (LLMs) raised the bar for what it meant to be smart. Now, we anticipate the robot to do lots of things autonomously, such as retry in cases of unresponsiveness or handle minor error reports. A more challenging, but soon expected feature, would involve the test robot navigating your web shop…

    2024 · github.com

  21. 21IL

    LLM Application development is extremely iterative, more so than any other types of development. This is because in addition to all the activities involved in regular application development, we also need to make the LLM Application accurate and reduce hallucination. To improve performance, we need to trial and error various combinations of LLM models, prompt templates (e.g., few-shot, chain-of-thought), prompt context with different RAG architecture, try different agent architecture, and more. There are thousands of permutations to try. We need to be able to easily experiment with these…

    2024 · palico.ai

  22. 22PA

    Hey HN, I built a tool to solve my biggest LLM workflow frustration: context switching. The idea came from trying to meta-prompt in Cursor, I found myself constantly jumping to a browser or dedicated AI app just to improve a prompt. This copy&#x2F;paste&#x2F;tweak cycle was a huge productivity killer. I wanted AI to integrate seamlessly into my workflow, not disrupt it. That's why I built Promptive. It's a native macOS app that lets you select any text, in any application, and run a custom LLM prompt on it with a global keyboard shortcut or right-click and select the action in the…

    2025 · promptiveai.app

  23. 23

    Cut LLM token costs 40-70% with offline prompt compression

    Jul 2026 · llmslim.app

  24. 24

    Turn basic ideas into elite Master Prompts instantly.

    Jun 2026 · samabrains.com

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