ChatGPT
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.
QuillBot is a tool in the Writing & Content category (pricing: Freemium). Below are 12 alternatives from the same category in our directory of 3,199 AI tools, ordered by editorial curation, manual verification, and on-site popularity — not by advertising.
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.
Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.
Orchestrate intelligent agents to run end-to-end marketing workflows—delivering speed, control, and measurable impact.
*reviews* - Chat with any PDF.
English Writing Assistant, Grammar Spelling Smart Check
Introducing the first-ever GTM AI platform. Automate hundreds of tedious, repetitive tasks and empower your team to scale success like never before.
A local Word Add-in for you to use local LLM se...
A foundational, 65-billion-parameter large lang...
OpenAI's API provides access to GPT-3 and GPT-4...
Open Pretrained Transformers (OPT) by Facebook ...
*reviews* - A versatile AI assistant by DeepSee...
Sora is an AI model published by OpenAI that ca...
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