Merlin AI alternatives
6 writing tools in the same lane as Merlin AI, ranked by editorial score.
CU
Chatbot UI
Writing · Multi-model (OpenAI, Anthropic, Google, Mistral, Meta, etc.)
6.9
Open-source unified chat interface for 80+ frontier AI models.
Freemium· Free tier on hosted app; self-host is free (bring your own API keys)multi-model chatprompt management
AT
AI Toolbox
Writing
One Chrome extension for ChatGPT, Gemini, Claude, and Grok
Freemium· Free forever: $0 · Monthly: $9.99 · Annual: ? · Lifetime: ? · All Access Lifetime: ?Organizing ChatGPT and Claude chat history into foldersFull-text search across past LLM conversations
TY
TypingMind
Writing · Multi-model (GPT, Claude, Gemini, Mistral, DeepSeek, local)
7.7
BYOK chat frontend that puts GPT, Claude, Gemini, and local models behind one polished UI.
Paid· Standard: $39 · Extended: $79 · Premium: $99multi-model-chatprompt-library
LI
LibreChat
Writing · Multi-model (OpenAI, Anthropic, Google, AWS Bedrock, Azure, Ollama, and others)
8.2
Open-source, self-hostable ChatGPT-style frontend that brings every major LLM provider under one roof.
Free· Free and open source; self-hosted (you pay model providers for API usage)multi-model chatself-hosted chatgpt
PY
PyGPT
Writing · Multi-model (GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Ollama)
8.1
Open-source desktop AI assistant that wires every major LLM provider into one local app with agents, vision, and a code interpreter.
Free· Free and open-source (MIT); bring your own provider API keysdesktop-ai-assistantchat-with-files
CH
ChatSonic
Writing · Multi-model (GPT-4o, o1, Claude 3.5, Gemini)
6.7
Marketing-focused AI chat that bundles GPT-4o, Claude, and Gemini with SEO and CMS integrations.
Freemium· Starter: $79 · Basic: $199 · Growth: $399 · Enterprise: Customcontent-marketingseo-research