For All Mankind backdrop
For All Mankind S5E4 — Open Source
7.1
For All Mankind•Season 5•Episode 4

Open Source

7.1/10 · 1,019 votesApr 16, 202657 min

Ranked #7 of 10 in Season 5•−0.3 vs season avg

Discussion

Alex takes Ed's advice and finds a new project to focus on: a job at Helios.

Directed byMeera Menon
Written bySabrina Almeida
Previous episodeE3 · HomeNext episodeE5 · Svoboda
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons5

All12345

Season 5 Episodes10

First Light stillE1 6.9

First Light

The Hard Six stillE2 7.2

The Hard Six

Home stillE3 7.9

Home

Open Source stillE4 7.1Now viewing

Open Source

Svoboda stillE5 7.1

Svoboda

No Sudden Moves stillE6 7.0

No Sudden Moves

The Sirens of Titan stillE7 7.8

The Sirens of Titan

Brave New World stillE8 7.7

Brave New World

Sons and Daughters stillE9 7.5

Sons and Daughters

This Land Is Our Land stillE10 8.2

This Land Is Our Land

Cast9

Toby Kebbell

Toby Kebbell

Miles Dale

Mireille Enos

Mireille Enos

Celia Boyd

Edi Gathegi

Edi Gathegi

Dev Ayesa

Cynthy Wu

Cynthy Wu

Kelly Baldwin

Coral Peña

Coral Peña

Aleida Rosales

Costa Ronin

Costa Ronin

Leonid 'Lenya' Polivanov

Sean Kaufman

Sean Kaufman

Alex Poletov Baldwin

Ruby Cruz

Ruby Cruz

Lily Dale

Ines Asserson

Ines Asserson

Avery 'AJ' Jarrett

Crew6

Meera Menon

Meera Menon

Director

S

Sabrina Almeida

Writer

L

Luke Maxcy

First Assistant Director

J

Jinny Parron

Second Assistant Director

C

Cort Fey

Director of Photography

E

Erin St. Pierre

Editor

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Open Source" is episode 4 of For All Mankind season 5. It scored 7.1/10 from 1,019 votes, ranking #7 of 10 episodes this season (season average 7.4). Directed by Meera Menon and written by Sabrina Almeida, it aired on April 16, 2026.

Next: E5 · SvobodaBest of Season 5