Choosing the best AI assistant UK users can trust in 2026 isn't as simple as picking the one with the catchiest name. Between Anthropic walking away from a $200 million Pentagon contract, a growing "Quit ChatGPT" movement, and genuine questions about where your data ends up, this is a decision that actually matters now. We've dug into ChatGPT, Claude, Gemini, Perplexity and others to compare everything from pricing and privacy to military contracts and water consumption — all with a UK lens.

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