AI · alternatives · 2026
24 alternatives to Nexim - AI Playground
Not all playgrounds are for kids
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
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 →
- 2
Playground▲198We build AI agents to find vulnerabilities in other AI agents. The playground started as an internal tool that we used to test our own offensive agent Nyx. But we realised that hacking an AI is about have as wide a distribution of attacks as possible, especially those which aren't in the distribution of the models. So we are launching playground as a platform to crowdsource agent jailbreaks. And although hacking AI is super fun and we are sure people will do it for free, we want to reward those who help us push forward the offensive frontier of AI. So we are committing $100K in prizes over…
Jul 2026 · playground.fabraix.com · its alternatives →
- 3
Vibe-check many open-source and proprietary LLMs at once
2024 · its alternatives →
- 4IR
2023 · sagittarius.greg.technology · its alternatives →
- 5
Use and compare GPT-6, Claude 5, Gemini 3 and more chatbots simultaneously
2023 · chathub.gg · its alternatives →
- 6
Save 80% on AI Subscriptions and prompt up to 4 models!
2025 · playground.chat · its alternatives →
- 7
Hi HN, We're a small team building AI tutors out of India, and as you might guess, this means we spend a ton of time writing, testing, and refining prompts for LLMs. When we started out, we were using the OpenAI playground but things became tedious when we wanted to compare responses from different models. We tried a bunch of other playgrounds but found them lacking in some features so we built our own. Quick Links: Github: https://github.com/supernova-app/ai-playground Hosted demo: http://playground.getsupernova.ai Demo video:…
2025 · playground.getsupernova.ai · its alternatives →
- 8
Token Harbor▲85The easiest way to access frontier AI models.
Aug 2026 · tokenharbor.ai · its alternatives →
- 9
prompts.chat▲63Discover, collect, and share the best AI prompts for ChatGPT, Claude, Gemini, and more. Join the largest community of AI prompt engineers and creators.
Dec 2025 · prompts.chat · its alternatives →
- 10
Compare 50+ AI models instantly in one unified playground
Dec 2025 · ai.neoninnovationlab.com · its alternatives →
- 11PF
Hey everyone, I'm Petr. I'm excited to share LangTale Playground (https://langtale.ai/playground), a first-of-its-kind tool enabling anyone to experiment with OpenAI function calls without coding. Born out of a hackathon project, it's now a part of our broader LangTale platform aimed at tackling common developer challenges with Language Learning Models (LLM). These include prompt integration, testing and debugging, version control, auditing, and usage/cost management. Here's our tech stack: Next.js by Vercel, Tailwind CSS, OpenAI, PlanetScale's Vitess database, and the…
2023 · langtale.ai · its alternatives →
- 12
Chrome now includes a native on-device LLM (Gemini Nano) starting in version 138. I've been building with it since it was in origin trials, it's powerful but the official Prompt API is still a bit awkward: - Enforces sessions even for basic usage - Requires user-triggered downloads - Lacks type safety or structured error handling So I open-sourced a small TypeScript wrapper I originally built for other projects to smooth over the rough edges: github: https://github.com/kstonekuan/simple-chromium-ai npm: https://www.npmjs.com/package/simple-chromium-ai…
2025 · github.com · its alternatives →
- 13
Free access to advanced AI models: chat, compare, and create
2025 · its alternatives →
- 14
Free master prompts for ChatGPT, Claude, Gemini & more
Mar 2026 · understandingai.net · its alternatives →
- 15
Experiment with, and evaluate, prompts and LLMs
2023 · its alternatives →
- 16
We build runtime security for AI agents. The playground started as an internal tool that we used to test our own guardrails. But we kept finding the same types of vulnerabilities because we think about attacks a certain way. At some point you need people who don't think like you. So we open-sourced it. Each challenge is a live agent with real tools and a published system prompt. Whenever a challenge is over, the full winning conversation transcript and guardrail logs get documented publicly. Building the general-purpose agent itself was probably the most fun part. Getting it to reliably use…
Mar 2026 · github.com · its alternatives →
- 17
- 18
JIT▲14Hey HN! I just shipped a new version of JIT.dev — you can now chat with multiple AI models like Gemini, Qwen, OpenAI, Claude, DeepSeek (and more) all in one place. Super handy if you wanna compare how they think and code side by side. What do you think?
2025 · jit.dev · its alternatives →
- 19
I’m the creator of Spring AI Playground, a self-hosted web UI built on Spring AI—designed to make testing and experimenting with AI tools more straightforward for Java developers. What it is Runs locally, lets you experiment with: • LLM providers (Ollama is the default, but you can switch to OpenAI, Anthropic, Microsoft, Google, and more.). • RAG workflows: upload documents, chunk, embed, search with scoring, and filter metadata. • A visual MCP (Model Context Protocol, a spec for connecting models to external tools) Playground to set up tool integrations (HTTP, STDIO, SSE), inspect tool…
2025 · github.com · its alternatives →
- 20PF
I was frustrated that open ai's playground lacks function calls, so I wrote my own more similar to ChatGpt! Now I can: * use the same models I program against * have access to function calls * can see how much it's costing me Side benefit: I can share my API key with a friend so they can use Gpt3.5 & 4 as open ai took their deposit but still labelled their account as free tier - mistakes happen. Prerequisite: an open ai api key https://github.com/acover288/playgpt Use at your own risk as I blindly installed npm packages.
2023 · gpt342.s3.us-east-1.amazonaws.com · its alternatives →
- 21DA
Better AI interface for any model. Use OpenAI, Anthropic Claude, Google Gemini, Grok, Mistral, and Llama in one fast, beautiful UI with search, tools, agents, and file uploads.
2023 · dappergpt.com · its alternatives →
- 22
ChatGPT, Claude, Gemini, Which one is the best? Compare them
2025 · chatcomparison.ai · its alternatives →
- 23
Open Source Prompt Manager for ChatGPT, Claude, Gemini,...
2025 · chromewebstore.google.com · its alternatives →
- 24AA
I'm a solo dev in Taiwan. I built 4 AI agents that handle content, sales leads, security scanning, and ops for my tech agency — all on Gemini 2.5 Flash free tier (1,500 req/day). I use ~105. Monthly LLM cost: $0. Architecture: 4 agents on OpenClaw (open source), running on WSL2 at home with 25 systemd timers. What they do every day: - Generate 8 social posts across platforms (quality-gated: generate → self-review → rewrite if score < 7/10) - Engage with community posts and auto-reply to comments (context-aware, max 2 rounds) - Research via RSS + HN API + Jina Reader → feed…
Mar 2026 · 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 →