Sigma AI Browser alternatives

D

DeepSeek

deepseek.com

A free chat assistant with a reasoning mode, plus a low-cost API for developers building on its models.

C

Claude

claude.ai

Anthropic's AI assistant for writing, research, coding, and document work, with projects and connectors.

C

ChatGPT

chatgpt.com

OpenAI's general-purpose AI assistant for writing, research, images, and code in one chat window.

GG

Google Gemini

gemini.google.com

Google's AI assistant for chat, research, image and video generation, and work inside Google apps.

G

Grok

grok.com

A chatbot for live search, step-by-step reasoning, image and video creation, and voice, on web and mobile.

MC

Microsoft Copilot

copilot.microsoft.com

Microsoft's AI assistant for chat, multi-step work, and agents across Microsoft 365 apps.

P

Perplexity

perplexity.ai

An AI answer engine that searches the live web and answers with sources you can check.

M

MaxAI.me

maxai.me

Browser extension and web app that lets you chat with any page, PDF, or video using several AI models.

D

Duck.ai

duck.ai

Private AI chat from DuckDuckGo that uses third-party models without an account or stored chat history.

Z

Z.ai

chat.z.ai

GLM-powered AI chat and agent platform with coding plans, API access, and slide generation.

SC

Sakana Chat

chat.sakana.ai

AI chat from Sakana AI with Fugu Max and Namazu models, code execution, attachments, and memory.

TM

Typing Mind

typingmind.com

A bring-your-own-key chat workspace for OpenAI, Claude, Gemini, and other models in one interface.