Thanks to visit codestin.com
Credit goes to sourceforge.net

Best LLM Evaluation Tools

Compare the Top LLM Evaluation Tools as of October 2025

What are LLM Evaluation Tools?

LLM (Large Language Model) evaluation tools are designed to assess the performance and accuracy of AI language models. These tools analyze various aspects, such as the model's ability to generate relevant, coherent, and contextually accurate responses. They often include metrics for measuring language fluency, factual correctness, bias, and ethical considerations. By providing detailed feedback, LLM evaluation tools help developers improve model quality, ensure alignment with user expectations, and address potential issues. Ultimately, these tools are essential for refining AI models to make them more reliable, safe, and effective for real-world applications. Compare and read user reviews of the best LLM Evaluation tools currently available using the table below. This list is updated regularly.

  • 1
    Vertex AI
    LLM Evaluation in Vertex AI focuses on assessing the performance of large language models to ensure their effectiveness across various natural language processing tasks. Vertex AI provides tools for evaluating LLMs in tasks like text generation, question-answering, and language translation, allowing businesses to fine-tune models for better accuracy and relevance. By evaluating these models, businesses can optimize their AI solutions and ensure they meet specific application needs. New customers receive $300 in free credits to explore the evaluation process and test large language models in their own environment. This functionality enables businesses to enhance the performance of LLMs and integrate them into their applications with confidence.
    Starting Price: Free ($300 in free credits)
    View Tool
    Visit Website
  • 2
    Klu

    Klu

    Klu

    Klu.ai is a Generative AI platform that simplifies the process of designing, deploying, and optimizing AI applications. Klu integrates with your preferred Large Language Models, incorporating data from varied sources, giving your applications unique context. Klu accelerates building applications using language models like Anthropic Claude, Azure OpenAI, GPT-4, and over 15 other models, allowing rapid prompt/model experimentation, data gathering and user feedback, and model fine-tuning while cost-effectively optimizing performance. Ship prompt generations, chat experiences, workflows, and autonomous workers in minutes. Klu provides SDKs and an API-first approach for all capabilities to enable developer productivity. Klu automatically provides abstractions for common LLM/GenAI use cases, including: LLM connectors, vector storage and retrieval, prompt templates, observability, and evaluation/testing tooling.
    Starting Price: $97
  • 3
    Portkey

    Portkey

    Portkey.ai

    Launch production-ready apps with the LMOps stack for monitoring, model management, and more. Replace your OpenAI or other provider APIs with the Portkey endpoint. Manage prompts, engines, parameters, and versions in Portkey. Switch, test, and upgrade models with confidence! View your app performance & user level aggregate metics to optimise usage and API costs Keep your user data secure from attacks and inadvertent exposure. Get proactive alerts when things go bad. A/B test your models in the real world and deploy the best performers. We built apps on top of LLM APIs for the past 2 and a half years and realised that while building a PoC took a weekend, taking it to production & managing it was a pain! We're building Portkey to help you succeed in deploying large language models APIs in your applications. Regardless of you trying Portkey, we're always happy to help!
    Starting Price: $49 per month
  • 4
    Humanloop

    Humanloop

    Humanloop

    Eye-balling a few examples isn't enough. Collect end-user feedback at scale to unlock actionable insights on how to improve your models. Easily A/B test models and prompts with the improvement engine built for GPT. Prompts only get your so far. Get higher quality results by fine-tuning on your best data – no coding or data science required. Integration in a single line of code. Experiment with Claude, ChatGPT and other language model providers without touching it again. You can build defensible and innovative products on top of powerful APIs – if you have the right tools to customize the models for your customers. Copy AI fine tune models on their best data, enabling cost savings and a competitive advantage. Enabling magical product experiences that delight over 2 million active users.
  • 5
    Keywords AI

    Keywords AI

    Keywords AI

    Keywords AI is the leading LLM monitoring platform for AI startups. Thousands of engineers use Keywords AI to get complete LLM observability and user analytics. With 1 line of code change, you can easily integrate 200+ LLMs into your codebase. Keywords AI allows you to monitor, test, and improve your AI apps with minimal effort.
    Starting Price: $0/month
  • Previous
  • You're on page 1
  • Next