The Helsinki Effect (2025): cast, story & where to watch

2025 · Film · ★ 7.9

The Helsinki Effect poster

Released in 2025, The Helsinki Effect is a documentary and history film directed by Arthur Franck, running about 88 minutes.

What it’s about. The Conference on Security and Cooperation in Europe (CSCE) was the starting point for the slow but sure collapse of communist authoritarian rule in Eastern Europe. The Helsinki Effect offers new perspectives on the events of the Cold War. The film tells the story of the CSCE process, which had a major impact on the end of the Cold War, and sheds light on secret top-level discussions behind closed doors, through voice simulations using artificial intelligence.

Who’s in it. The Helsinki Effect stars Arthur Franck as Narrator (voice), Urho Kekkonen as Self (archive footage), Leonid Brezhnev as Self (archive footage) and Gerald Ford as Self (archive footage), among others.

How it landed. With an audience score of 7.9/10, The Helsinki Effect has been warmly received by audiences.

Where to watch. Streaming options change often. See the full, country-by-country breakdown on our where to watch The Helsinki Effect page.

If you liked it. Fans of The Helsinki Effect tend to enjoy One Direction: This Is Us, Burn the Stage: The Movie, BTS World Tour: Love Yourself - Japan Edition and Senna.

Frequently asked

Where can I watch The Helsinki Effect (2025)?
Streaming, rental and purchase options for The Helsinki Effect change frequently. Check our where-to-watch page for the latest availability in your country.
Is The Helsinki Effect worth watching?
The Helsinki Effect holds an audience score of 7.9 out of 10, and is a strong pick if you enjoy documentary and history. Most viewers rate it highly.
Who stars in The Helsinki Effect?
The Helsinki Effect stars Arthur Franck, Urho Kekkonen, Leonid Brezhnev, Gerald Ford and Henry Kissinger.
When was The Helsinki Effect released?
The Helsinki Effect was released in 2025, with a runtime of about 88 minutes.