Don't just assume by looking at the numbers. Always consider the specific scoring model when referencing any score.
While different scores evaluate report data differently and can have different scoring ranges so you can't use a score generated by one model to determine a score generated by another model it is possible for two different models to produce similar or even the same number in certain situations. However, this is coincidence and remember that coincidental and causal are not the same thing.
In many cases you can find info on the specific scoring model on the site. If not, check existing threads here (don't overlook them as a resource) as scores are a very common topic and it's very likely that the model in question has been discussed before.
myFICO doesn't provide just FICO 8's (see also http://www.myfico.com/Products/FICOScore8Disclaimer.html) but the monitoring products updates and alerts with FICO 8's.
Experian provides FICO 8's. See also:
http://www.experian.com/consumer-products/credit-score.html
http://www.experian.com/consumer-products/experian-equifax-transunion-credit-report-and-score.html
Credit score calculated based on FICO® Score 8 model.
With Equifax the score provided depends on the product.
http://www.equifax.com/all-products/
Products in the middle include Equifax scores, not FICO's. Products at the bottom come with FICO's but I don't recall which model and the page doesn't clearly state. This definitely has been discussed though and the info can be found in prior threads. IIRC it's not a FICO 8 but don't take my word on that.
EDIT: Found with a quick site restrcited Google search (see Revelate's response):
http://ficoforums.myfico.com/t5/General-Credit-Topics/MyFICO-vs-Equifax-Score-Watch-Cancelled/td-p/4...
FICO 4 is not the same as FICO 8. Do not assume all FICO models to be equivalent.
