Claude wins for writing and long documents. ChatGPT wins for breadth and plugins. Gemini wins if you live in Google Workspace. All three have a usable free tier.
The three most-used AI assistants are Claude (Anthropic), ChatGPT (OpenAI) and Gemini (Google). They all cost $20/mo for the pro tier, they all handle general Q&A well, and they all have a free version. So which one is actually worth paying for — and which wins for your specific workflow?
We tested all three on the same tasks: a 4,000-word article edit, a logic puzzle, a debugging session, summarising a 90-page PDF, and brainstorming a product campaign. Here's what we found.
Quick Comparison
| Claude | ChatGPT | Gemini | |
|---|---|---|---|
| Starting price | $20/mo | $20/mo | $20/mo |
| Free tier | Yes | Yes | Yes |
| Context window | 200k tokens | 128k tokens | 1M tokens |
| Web search | Yes | Yes | Yes |
| Image generation | No | Yes (DALL·E) | Yes (Imagen) |
| Code interpreter | Yes | Yes | Yes |
| Best at | Writing, analysis | Breadth, plugins | Google apps, research |
Claude — Best for Writing and Long Documents
Claude consistently produces the most natural, careful prose of the three. It follows nuanced instructions better than ChatGPT, rarely adds filler, and its 200k token context window means it can reason over an entire book without losing track. It's the one writers, lawyers and researchers tend to stick with.
The downside: no image generation, and it doesn't yet have a deep plugin ecosystem. If you need to browse the web, generate an image and analyse a spreadsheet in the same conversation, ChatGPT handles that more fluidly.
ChatGPT — Best for General Use and Integrations
ChatGPT is the most versatile of the three. It has the broadest plugin library, native DALL·E image generation, a code interpreter that runs Python, and deep integration with the OpenAI API for developers. It's the default for a reason.
That said, GPT-4o's writing output often feels slightly more generic than Claude's, and it has a tendency to be overly agreeable rather than direct. For serious long-form work, Claude edges it out.
Gemini — Best for Google Workspace Users
Gemini has the largest context window (1M tokens on Gemini 1.5 Pro) and is deeply integrated with Google Docs, Gmail, Drive and Search. If your work lives in Google's ecosystem, Gemini gives you AI embedded directly in the tools you already use — a genuine productivity win.
Outside Google's apps, Gemini trails Claude and ChatGPT on writing quality and instruction-following. It's best thought of as Google's AI-everywhere strategy rather than a standalone chatbot.
Which One Should You Pay For?
- Writer, editor or researcher → Claude Pro ($20/mo)
- Developer or power user who needs tools and plugins → ChatGPT Plus ($20/mo)
- Google Workspace team → Gemini Advanced ($20/mo)
- Casual user → Use all three free tiers and see what sticks
Claude for quality writing and document work. ChatGPT for breadth and integrations. Gemini for Google users. You genuinely can't go wrong at $20/mo — the best one is the one that fits your existing workflow.