By Dr. Manuel Izquierdo (Licensed Gynecologist – 280308601).
When a couple or a single person decides to seek medical help to achieve a pregnancy, it is common to have doubts between two well-known assisted reproduction treatments: in vitro fertilization (IVF) and artificial insemination. Although both pursue the same goal, they differ significantly in terms of complexity, indications, success rates, and costs, so they are not always equivalent options.
In general terms, in vitro fertilization is a more complex technique carried out in a laboratory, while artificial insemination is a simpler procedure that takes place inside the woman’s body. These differences mean that each treatment is indicated for different clinical situations.

In this article, we analyze the main differences between in vitro fertilization and artificial insemination to help you understand when each option is recommended. If you would like to learn in detail how each treatment is performed, you can find more information on our specific pages about in vitro fertilization and artificial insemination.
In general, IVF has significantly higher success rates than AI, particularly for women over the age of 35 or in cases of more complex fertility problems. At IVF-Life, 70% of patients undergoing IVF achieve pregnancy. This rate increases to 83% when combined with genetic testing and rises to 90% when the treatment is performed using donor eggs. These outcomes exceed the European average.
Both treatments require ovarian stimulation, but with key differences. In AI, the stimulation is mild, as the aim is to mature one or two follicles (to minimize the risk of multiple pregnancies). In IVF, the stimulation is more intensive to obtain between 6 and 15 eggs, as larger numbers increase the chances of success and also allow the freezing of surplus embryos for future attempts.

This depends entirely on each individual case. The choice between IVF and AI is not determined solely by cost or success rates, but by the patient’s unique characteristics. While AI is a simpler and more economical option for mild cases, IVF offers higher pregnancy rates in more complex situations. For this reason, a thorough diagnosis and the guidance of an experienced medical team are essential.
At IVF-Life, our specialists will carefully assess your case and explain all available options so you can make the best possible decision.