OpenAI
ChatGPT
ChatGPT is OpenAI's AI assistant, released in November 2022, that answers questions, writes and analyses text, code, images and files, searches the web and carries out multi-step tasks on the web, iOS, Android, macOS and Windows.
Directory
Assistant directory
One page per assistant and device, each opening with a plain one-sentence definition, followed by key facts, pricing, the latest news and the comparisons it appears in. Facts are checked against the vendor's own announcements and every page shows the date it was last verified.
AI assistants
Anthropic
Claude
Claude is Anthropic's AI assistant, first released in March 2023, used for writing, analysis, research and coding in its web, desktop and mobile apps and through Anthropic's API.
Gemini
Gemini is Google's AI assistant, available as the Gemini app on the web, Android and iOS and built into Android, Chrome, Google Workspace and Google Home devices, powered by Google's Gemini family of models.
Microsoft
Microsoft Copilot
Microsoft Copilot is Microsoft's AI assistant, launched as Bing Chat in February 2023 and renamed Copilot in November 2023, that answers questions, writes and creates images in its own app and works inside Windows, Edge, Word, Excel, PowerPoint and Outlook.
Perplexity AI
Perplexity
Perplexity is an AI answer engine from Perplexity AI, launched in December 2022, that searches the web and answers questions in plain language with numbered citations to its sources, and can also run deep research and agent tasks.
SpaceXAI
Grok
Grok is the AI assistant from SpaceXAI, the company formerly called xAI, first released in November 2023, that answers questions using real-time web and X search, generates images and video, and holds voice conversations on the web, iOS, Android and X.
Voice assistants
Apple
Siri
Siri is Apple's voice assistant, introduced with the iPhone 4S in 2011; with iOS 27, released on September 14, 2026, Apple rebuilt it as Siri AI, a conversational assistant with personal context, on-screen awareness and actions inside apps.
Amazon
Alexa+
Alexa+ is Amazon's generative-AI voice assistant, announced on February 26, 2025, that succeeds the original Alexa on Echo devices, Fire TV, the Alexa app and Alexa.com; it is free with Amazon Prime and costs $19.99 a month in the US without Prime.
Devices
Amazon
Amazon Echo
Amazon Echo is Amazon's family of smart speakers and smart displays, including Echo Dot, Echo Studio and Echo Show, built around the Alexa voice assistant and, since 2025, Alexa+.
Google Home Speaker
Google Home Speaker is Google's smart speaker built for Gemini for Home, released on June 25, 2026 at $99.99 in the US; it is Google's first new standalone smart speaker since the Nest Audio in 2020.
Meta
Ray-Ban Meta
Ray-Ban Meta are camera-equipped AI glasses made by Meta and EssilorLuxottica with the Meta AI assistant built in; the third generation, Ray-Ban Meta (Gen 3), went on sale on September 23, 2026 from $449 with up to nine hours of battery, a 12 MP camera and 3K Ultra HD video.