WireGuard vs OpenVPN — Which is Better in 2026?

We may earn a commission from links on this page at no extra cost to you.

WireGuard — the modern standard

Released 2015, now the dominant protocol. Around 4,000 lines of code versus OpenVPN's 70,000 to 100,000. Runs at kernel level for maximum efficiency. Connects in milliseconds. Uses ChaCha20-Poly1305 encryption with a fixed cipher suite — no room for misconfiguration. In January 2026, Mullvad deprecated OpenVPN entirely, citing WireGuard's clear technical superiority.

OpenVPN — the battle-tested veteran

Operating since 2001 with an unmatched track record. Its key advantage is TCP port 443 support — the same port as HTTPS — making it extremely difficult for firewalls and censorship systems to block. Best for restrictive networks, corporate firewalls, and countries like China that actively block VPN protocols.

Speed

WireGuard delivers 700 to 950 Mbps on a 1 Gbps connection. OpenVPN UDP delivers 200 to 400 Mbps. WireGuard is consistently two to four times faster across all independent tests in 2026.

Security

Both are cryptographically sound. WireGuard's smaller codebase is easier to audit and patch. OpenVPN's flexibility means it can be configured securely or insecurely — poorly configured servers can use weak ciphers. WireGuard's fixed suite eliminates this risk.

When to use each

WireGuard: everyday use, streaming, gaming, maximum speed — the right default for most users. OpenVPN: networks that block WireGuard UDP, restrictive firewalls, censored countries, corporate environments with port restrictions.