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.

AI writing assistant with customizable knowledge bases and research agents.

Paraphrasing and grammar tool for rewriting, summarizing and citing text.

AI writing and SEO platform for articles, ads and AI search visibility.

Budget AI writer generating copy across 40+ use cases and tones.

AI content platform for ecommerce product descriptions and SEO articles at scale.