A few years ago, crypto dealer positioning was barely available. Now several providers publish it at a range of prices, which means the buying decision has moved from whether you can get it to whose version you want.
The numbers will differ between providers. That is not one of them being wrong; it is different defensible choices, and knowing which choices were made is the entire evaluation.
Which books are included
Crypto options liquidity is heavily concentrated, with one venue historically carrying most of it. A provider including only that venue produces a clean number about a partial market. One aggregating several produces a broader number that may be dominated by thin books.
Neither is wrong. A provider who will not tell you which they do is not offering something you can reason about.
Strike level or aggregate
A single aggregate figure is cheap to compute and hides the shape. Per-strike detail is where the tradeable structure lives — the wall, the gap, the flip. If a vendor offers only the aggregate, you are buying a summary of something you cannot inspect.
Does the ETF book sit beside the perp book
The listed options on spot vehicles are a different, growing pool of positioning that behaves differently from the offshore perp complex. Providers who track only one are showing you part of the picture, and the part they skip is often the part that moves.
Freshness and history
How old is the reading, stated in the response rather than implied. And is there a recorded past, or only a live number. The past is what turns a reading into a percentile, and it is the thing that cannot be added later.
On price
Cheaper providers exist and some are good. Compare what is actually included at each price rather than the headline, especially whether history, per-strike detail and both option books are in the tier you would buy.