She looks forward to surviving and living her life in the outside world.
Pfc. Manning, 29, will remain an active-duty soldier in the U.S. Army, but she won't be paid a salary and it's highly unlikely that she will be called to serve. Last year, she attempted suicide twice and, after a hunger strike, received a promise of gender-affirmation surgery.
On Wednesday, Manning left the prison barracks at Fort Leavenworth in Kansas - the only maximum-security facility run by the Pentagon - thanks to a commutation of her sentence by ex-President Barack Obama before he left office.
The documentarians did not comment on whether Manning would receive any proceeds from the project.
Chelsea Manning has taken her first steps of freedom as a woman, and commemorated the occasion like any 27-year-old might celebrate a big day: posting a photo on Instagram.
As of her release, Manning will continue on as a private with some military accommodations, but will not be paid.
Manning, who is transgender and was known as Bradley Manning before she transitioned in prison, was convicted in 2013 of 20 counts, including six Espionage Act violations.
In 2010, Manning was serving in Iraq as an analyst for the us military.
Chase Strangio, staff attorney with the ACLU, had the following reaction: "It is incredible to witness Chelsea Manning's freedom after having seen and worked with her behind bars for four years". But Manning's sentence was commuted by outgoing President Obama, and as of today, she will return to private life. Manning was imprisoned for disclosing archives of secret files to WikiLeaks and sentenced to an unprecedented 35-year term. This transition is certain to speed up outside a prison environment Manning said denied her "right to exist".
Convicted in 2013 for leaking classified documents and diplomatic cables to Wikileaks, Manning has been a controversial figure. She used her military access to leak over 750,000 documents to WikiLeaks, defending her action as an attempt to start a conversation about what she viewed as compromising US tactics and intervention.
"Chelsea has already served the longest sentence of any whistleblower in the history of this country".
Obama's decision to commute Manning's sentence set off harsh criticism from some Republicans and intelligence officials.
Then in November of 2015, Manning fought once again with the prison system, this time to be able to grow out her hair.