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AI · alternatives · 2026

24 alternatives to Airtrain.ai LLM Playground

Vibe-check many open-source and proprietary LLMs at once

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Airtrain.ai LLM Playground launched in 2024; newer entries below may have overtaken it.

  1. 1
    Taylor AI▲118

    Fine-tune open source LLMs in minutes

    2023 · trytaylor.ai · its alternatives →

  2. 2

    Hey, Jared Palmer (creator of this playground) here. Really excited to ship this. I’ve been building this over the past few weeks to compare LLMs from different providers like OpenAI, Anthropic, Cohere, etc. At Vercel, I manage our Frameworks division (including Next.js, Svelte, and Turbo) and wanted to also dogfood some of the latest features in a slightly larger application. This playground takes a lot of inspiration from https://nat.dev and is built on Tailwind, ui.shadcn.com, and some upcoming Vercel products we’re announcing soon. We’re going to continue adding models to…

    2023 · play.vercel.ai · its alternatives →

  3. 3
    LLMTest▲125

    Use the right LLMs in your apps. Setup fallbacks. Be happy.

    May 2026 · llmtest.io · its alternatives →

  4. 4

    Hey HN, We've been building a multi-model API for LLMs called OpenRouter since we launched the Window AI extension in April this year [0]. The events of the last week make it clear the LLM landscape is unpredictable, so LLM aggregators are picking up interest. Unlike others, we're making a router on top of a public, explorable dataset. We recently built a way to rank and visualize this data, including the token counts we see going to and from different models, both open-sourced (like Llama, Mistral, finetunes, and variants) and closed-sourced (OpenAI, Anthropic). The API supports - 50+…

    Apr 2026 · openrouter.ai · its alternatives →

  5. 5
    Mammouth▲190

    Get access to the best LLMs in one place for 10€

    2024 · its alternatives →

  6. 6

    Run AI agents like Claude Code, Codex, Opencode on mobile

    Dec 2025 · vibepocket.com · its alternatives →

  7. 7
    Gradient▲153

    Developer API for building private LLMs that you own

    2023 · hyperagent.com · its alternatives →

  8. 8
    Stax▲179

    Move your LLM evals from vibes to data

    2025 · stax.withgoogle.com · its alternatives →

  9. 9
    ChattyUI▲149

    Run open-source LLMs locally in the browser using WebGPU

    2024 · its alternatives →

  10. 10

    Test LLM prompts & models side-by-side against many inputs

    2024 · its alternatives →

  11. 11

    Transform generic AI models into specialized solutions

    2025 · tokenfactory.nebius.com · its alternatives →

  12. 12

    Aggregate uptime monitoring across OpenAI, Claude, and more

    Apr 2026 · tools.lamatic.ai · its alternatives →

  13. 13AT

    I recently built a small open-source tool to benchmark different LLM API endpoints — including OpenAI, Claude, and self-hosted models (like llama.cpp). It runs a configurable number of test requests and reports two key metrics: • First-token latency (ms): How long it takes for the first token to appear • Output speed (tokens/sec): Overall output fluency Demo: https://llmapitest.com/ Code: https://github.com/qjr87/llm-api-test The goal is to provide a simple, visual, and reproducible way to evaluate performance across different LLM providers, including…

    2025 · llmapitest.com · its alternatives →

  14. 14

    Postman for fine-tuning LLMs

    Jan 2026 · langtrain.xyz · its alternatives →

  15. 15

    Use and compare GPT-6, Claude 5, Gemini 3 and more chatbots simultaneously

    2023 · chathub.gg · its alternatives →

  16. 16

    Save 80% on AI Subscriptions and prompt up to 4 models!

    2025 · playground.chat · its alternatives →

  17. 17

    An open source Next app template to monitor your AI apps

    2025 · github.com · its alternatives →

  18. 18

    Talk to multiple LLMs thru a unified API

    2025 · ai-gateway.dev · its alternatives →

  19. 19

    The mission control for your local Ollama LLMs

    2025 · its alternatives →

  20. 20

    Compare 50+ AI models instantly in one unified playground

    Dec 2025 · ai.neoninnovationlab.com · its alternatives →

  21. 21

    [deprecated] AI Gateway - core infrastructure stack for building production-ready AI Applications - pyadav/gateway

    2024 · github.com · its alternatives →

  22. 22

    Your Gateway to Affordable AI Models

    2024 · rapidapi.com · its alternatives →

  23. 23

    Test your real data and find your perfect AI model

    2025 · its alternatives →

  24. 24
    Byte▲8

    Your local AI model or API key in a customizable llm chatbox

    Jul 2026 · get-byte.app · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →