The honest comparisons.

How to read a comparison page

Almost every comparison page on the internet is written by one of the two parties, and the tell is that the alternative never wins anything. Every comparison here opens with what the other tool genuinely does better, and several of them route you away from Copilotly for specific tasks.

That is not modesty. A comparison that only flatters itself is one you stop trusting in a line, and the rest of the page - including the parts that are true and favourable - goes with it. Naming where a competitor is stronger is the only way the rest is worth reading.

What actually differs between these tools

Most general assistants are built to be safe across every subject simultaneously. That is the right design goal for a general tool and it produces a specific failure on professional questions: rather than being wrong, they hedge. "You may want to consult a professional" is a correct answer that leaves you exactly where you started.

The second difference is policy rather than capability. OpenAI's usage policies restrict tailored advice requiring a licence without appropriate professional involvement, and other providers have similar terms. That is a reasonable position for a general platform and it means the answer you get on a legal or medical question is shaped by liability as much as by the model.

The third is structure. A configuration applied at every turn does not degrade as a conversation fills up, where a system prompt you typed at the start competes for attention with everything after it - which is why a model told to act as a lawyer is hedging like a generalist by message fifteen, usually just as the conversation gets specific.

When the alternative is the right answer

Frequently. For code, for open-ended research, for writing at length, for anything needing live web results, a general assistant or a search-native tool will serve you better and we say so on the individual pages.

The narrow claim worth making is this: on a professional question with a deadline, a jurisdiction and a consequence attached, a copilot configured for that field asks better questions and states its limits more precisely. That is a real difference and it is not a claim about general intelligence.

If you want the underlying argument rather than a table, how it works sets out what a copilot is at the configuration level, including where specialisation stops helping.