Mistral is genuinely groundbreaking, for a fast, locally-hosted model without content filtering at the base layer. You can try it online here: https://labs.perplexity.ai/ (switch to Mistral)
what do you mean by 'corpus'? It is only 13GB so questions that require recalling specific facts aren't going to work well with so little room for 'compression', but asking mistral to write emails or perform style revisions works quite well for me