GREB by Cheetah AI Alternatives: 12 Best Similar Tools (2026)

Perplexity AI

Freemium

Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.

Claude

Free + Pro $20/mo+ · Manually verified

Anthropic's AI assistant family — Claude Opus, Sonnet, and Haiku. Strong for writing, coding, analysis, vision, and long-context reasoning.

Lovable

Freemium

Lovable is an AI-powered development platform that generates production-ready full‑stack applications from simple prompts.

ChatGPT

Freemium · Manually verified

OpenAI's flagship AI chatbot with the largest mainstream user base. GPT-5.x models for chat, search, image generation, voice, code interpreter, and agent workflows.

Skillkit

Free

Universal open-source package manager to deploy and manage skills across 32+ AI coding agents.

Gemini

Freemium · Manually verified

Google's AI assistant family — Gemini 3 Pro for top reasoning, 3.5 Flash for speed. Tight integration with Search, Workspace (Gmail/Docs), and Android.

通义千问

Freemium

Tongyi Qianwen is Alibaba Cloud’s next‑generation large language model platform designed to bring enterprise-grade AI capabilities to developers,...

Adobe Acrobat AI Assistant

AI Assistant add-on $4.99/mo (or $59.88/yr); limited free requests for Acrobat users · Manually verified

Adobe's AI add-on built into Acrobat that summarizes PDFs, answers questions about document content, and points to the source pages.

Maestri

Free

Infinite visual canvas for orchestrating and connecting multiple AI coding agents on macOS.

Crow

Adds a chat-first AI copilot to any product in minutes.

getviktor.com

Paid

An autonomous AI coworker for Slack that executes tasks, writes code, and automates workflows.

NotebookLM

Free

AI Research Assistant developed by Google. Uplo...