The three assistants at a glance
ChatGPT (OpenAI), Claude (Anthropic), and Gemini (Google) are the three leading general-purpose AI assistants, and for most everyday tasks any of the three will serve you well. They differ less in raw capability than in personality, ecosystem, and the edges where each is strongest. ChatGPT is the most feature-rich and widely integrated; Claude is frequently favoured for writing and careful long-document reasoning; Gemini is deeply tied to Google’s products and offers the largest context window. Each releases new model versions frequently, so treat any specific benchmark as a snapshot — the practical takeaway is which assistant fits your recurring work.
Writing, reasoning, and accuracy
For writing, Claude has a reputation for producing more natural, less formulaic prose and for following nuanced style instructions closely, which is why many writers and editors prefer it. ChatGPT is highly capable and versatile, with strong creative range and the broadest set of tools layered on top. Gemini writes competently and shines when the task involves pulling in current information through its search integration. On reasoning and accuracy, all three are strong but all three can still hallucinate — none is a reliable source of facts without verification. Their relative scores on reasoning benchmarks shift with each release, so the honest answer is that for high-stakes accuracy you should verify outputs from any of them rather than trusting one as definitively “the most accurate.”
Coding, context, and ecosystem
For coding, Claude and ChatGPT both perform at the top tier, trading the lead across benchmarks and real tasks; developers often find Claude’s explanations more thorough and ChatGPT’s surrounding tooling more convenient. Gemini codes well and benefits from its huge context for reasoning across large codebases. On context window, Gemini has historically led with windows into the millions of tokens, with Claude also offering a large window ideal for long-document analysis, and ChatGPT trailing but ample for typical use. On ecosystem, ChatGPT has the widest reach through its apps, custom GPTs, and integrations; Gemini is unmatched if you live in Gmail, Docs, and Sheets; Claude focuses on a clean assistant and a strong developer API.
Pricing and the practical verdict
Pricing is closely matched: each offers a capable free tier and a paid plan around £15–£20/month that unlocks the strongest models and higher limits, plus separate API pricing for developers. The practical verdict is by use case rather than overall: pick Claude if writing quality and long-document work dominate your week; pick ChatGPT if you want the deepest ecosystem, the most tools, and a strong all-rounder; pick Gemini if you live inside Google Workspace or routinely feed in very large documents. Because the free tiers are good, the cheapest way to decide is to run your own real tasks through all three for a week and keep the one that fits — the differences are real but small enough that personal fit matters more than any leaderboard.