compe-tabnine is deprecated, as nvim-compe has been deprecated. Please consider using hrsh7th/nvim-cmp and tzachar/cmp-tabnine.

TabNine source for hrsh7th/nvim-compe

Using plug:

Plug 'tzachar/compe-tabnine', { 'do': './install.sh' }

Using Packer:

return require("packer").startup(
 function(use)
 	use "hrsh7th/nvim-compe" --completion
 	use {'tzachar/compe-tabnine', run='./install.sh', requires = 'hrsh7th/nvim-compe'}
 end
)

And later, enable the plugin:

 let g:compe.source.tabnine = v:true

Or, to set some options:

let g:compe.source.tabnine = {}
let g:compe.source.tabnine.max_line = 1000
let g:compe.source.tabnine.max_num_results = 6
let g:compe.source.tabnine.priority = 5000
" setting sort to false means compe will leave tabnine to sort the completion items
let g:compe.source.tabnine.sort = v:false
let g:compe.source.tabnine.show_prediction_strength = v:true
let g:compe.source.tabnine.ignore_pattern = ''

In general, as TabNine is a predictive completion engine, you would normally want TabNine to suggest completions after every keypress. In some instances this may be either prohibitive or annoying. To work around it, you can use the ignore_pattern config option. ignore_pattern is an RE specifying when not to suggest completions based on the character before the cursor. For example, to not fire completions after an opening bracket, set ignore_pattern = '[(]'. To disable this functionality, leave it empty or set to an empty string.

Sometimes, Packer fails to install the plugin (though cloning the repo succeeds). Until this is resolved, perform the following:

cd .local/share/nvim/site/pack/packer/start/compe-tabnine
./install.sh

Change .local/share/nvim/site/pack/packer/start/compe-tabnine to the path Packer installs packages in your setup.