The LLM Cheat Sheet 2026
Every LLM that matters for UK business in 2026 on one page. Closed-API frontier models and the open-source field that closed the gap. Price, strengths, gotchas, and when each one is the right pick.
A single-document reference covering eight production LLMs side-by-side. Claude, GPT, Gemini and DeepSeek on the closed-API side. Llama 4, Qwen 3.5, Mistral Large 3 and Gemma 4 on the self-hosted open-source side. Every entry includes price, context window, what it's actually best at, and a one-line "pick when" for UK business buyers.
What's inside
A 2026 pricing and capability table for every model worth shortlisting
UK data-residency notes for each model (Azure UK, EU Vertex, native self-hosted)
The DeepSeek question answered: vendor API vs self-hosted weights, and why one is safe and the other isn't
An honest summary: when frontier API wins, when self-hosted wins, and the hybrid setup most serious teams actually run
Who it's for
UK business owners, technical directors and operations leads evaluating which LLM to standardise on, or whether to switch. Especially useful for legal, accountancy and agency firms weighing data-residency trade-offs.
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