> Do you publish accuracy figures?

we'd love to, but unfortunately some of our main competitors have restricting terms in their ToS (e.g. http://www.alchemyapi.com/company/terms.html) that prevent us from doing so. we will publish what we can though.

> Any information about what domains your training data is from?

they're mostly trained on general news and social media content (with lots of manual and automated cleanup). drop us an email if you need more details: hello@aylien.com