The firm said it was adding the collective and security models in response to growing demand from financial advisers.
The collective and security models available on the platform can be invested in open-ended investments or directly listed equities and range from low to moderate risk to high risk and potential rewards.
Both models are also available on other platforms, including Standard Life, Aviva, Transact, Fusion and Ascentric.
Thesis Asset Management has around £13.1 billion of funds under management and administration, with the firm specialising in developing partnerships with professionals in financial advice, law, accountancy and tax.
The firm’s director of marketing and business development, Lawrence Cook said: “We are really pleased to be able to offer our model portfolios on the 7IM platform. Thesis is committed to providing investors and advisers with as much choice as possible when accessing our portfolios.“