Writing & chat tools

OpenAI's flagship chat assistant — the broadest, most-used AI product on earth.

Anthropic's chat assistant — preferred by developers and writers for its tone and reasoning.

Google's chat assistant with 1M+ token context and tight Workspace integration.

Real-time writing assistant — grammar, tone, brand voice, available in every app.

Open-weight reasoning LLM with long-horizon planning — strong on math and code.

AI book writing platform — research, draft and format ebooks end-to-end.

Use Claude, GPT, Gemini and Perplexity from one chat — no tab-switching.

xAI's conversational LLM with a real-time view of X and a less-filtered tone.

Analyze, score and optimize AI prompts for any model.

Compare GPT-5, Gemini 2.5, Claude 4, DeepSeek R1 and Llama side-by-side.

Self-publishing AI for both fiction and non-fiction authors.

Desktop app for deep, multi-threaded conversations with AI.

Intelligent book-writing tool that enhances the entire publishing process.

Free online AI humanizer — rewrites AI text to read like a human wrote it.

All-in-one AI book creation platform used by 15,700+ authors.

First sub-quadratic LLM purpose-built for 12M-token reasoning workloads.

Chat with 360+ AI models in one place — switch without re-paying for each.

AI writing partner built for fiction — brainstorm plots, generate scenes, rewrite in your voice.

AI rewriting assistant — instantly rephrase sentences to be clearer, shorter, more casual.

Distraction-free AI writing editor — Google-Docs-like with /commands to invoke AI inline.