Terraria 1.4.5: Is It Out, Current Version, and tModLoader Status (2026)

Terraria 1.4.5 “Bigger and Boulder” is out. It released on January 27, 2026, and the current stable version is 1.4.5.6 (March 9, 2026). The one thing still in progress is mod support: tModLoader has not yet updated to 1.4.5, so most mods still run only on Terraria 1.4.4. This guide answers the questions players are asking right now, and explains what 1.4.5 means if you run a Terraria server.

Table of Contents

• Is Terraria 1.4.5 out yet?
• What is the current Terraria version?
• What’s new in “Bigger and Boulder”
• Does tModLoader work on 1.4.5 yet?
• When will tModLoader update to 1.4.5?
• How to keep playing modded Terraria (stay on 1.4.4)
• Running a Terraria 1.4.5 server
• FAQ

Is Terraria 1.4.5 out yet?

Yes. Terraria 1.4.5, named “Bigger and Boulder,” launched on January 27, 2026 across PC and the main console and mobile platforms, per the Official Terraria Wiki. It is a live, finished update, not an upcoming one, and Re-Logic has shipped several follow-up patches since launch.

What is the current Terraria version?

The current stable desktop version is 1.4.5.6, released March 9, 2026, according to the Terraria desktop version history. The 1.4.5 line shipped as a chain of patches:

• 1.4.5.0 launch on January 27, 2026
• 1.4.5.1 through 1.4.5.5 across late January and February (hotfixes and balance passes)
• 1.4.5.6 on March 9, 2026 (current stable)

If your game still shows 1.4.4.9, you are on the previous branch, which is the version tModLoader continues to use (see below).

What’s new in “Bigger and Boulder”

1.4.5 is a large content and balance update. Per the Official Terraria Wiki it adds more than 650 new items along with new gameplay features and a wide set of weapon and mechanic balance changes (for example, whip stacking was reworked). For the full item-by-item breakdown, the wiki’s 1.4.5 page is the authoritative reference.

Does tModLoader work on 1.4.5 yet?

No. As of mid-2026, tModLoader still targets Terraria 1.4.4. If you let Steam update Terraria to 1.4.5, your mods will not load until tModLoader is ported. Per the official tModLoader 1.4.5 tracking issue (#5070), a 1.4.5 development branch exists and is “currently buildable and launches, but there is much work to be done.” It is a contributor-only Steam beta (the 1.4.5-dev branch) and is explicitly not stable or playable for normal use.

In short: vanilla Terraria is on 1.4.5; modded Terraria is still on 1.4.4. Big mods like Calamity and Fargo’s run on the 1.4.4 branch through tModLoader, not on vanilla 1.4.5.

When will tModLoader update to 1.4.5?

There is no firm date. The tModLoader team has said the port “will take many months.” For reference, porting tModLoader to the previous major version (1.4.4) took roughly nine months. tModLoader keeps shipping regular stable updates on the 1.4.4 line in the meantime, so existing modded setups stay supported while the 1.4.5 port is built. Watch the tModLoader Steam news and issue #5070 for the official “Preview” announcement.

How to keep playing modded Terraria (stay on 1.4.4)

If you want your mods to keep working, do not move modded play to vanilla 1.4.5. A few practical tips:

• Play through tModLoader, which stays on 1.4.4. Launching tModLoader does not force your vanilla Terraria install to 1.4.5.
• In Steam, you can pin a build through the Betas tab if you want to hold a specific version for a 1.4.4 multiplayer group.
• Client and server must match. A 1.4.4 modded group needs a 1.4.4 (tModLoader) server, not a 1.4.5 vanilla server.

Running a Terraria 1.4.5 server

The core server setup is unchanged by 1.4.5: a dedicated server still listens on TCP port 7777 and reads maxplayers and world settings from serverconfig.txt, with most groups running 4 to 16 slots for smooth performance. The important 2026 nuance is the version split:

• Vanilla 1.4.5 servers work now. If your group plays unmodded, run a 1.4.5 dedicated server and you are current.
• Modded servers are still 1.4.4. A tModLoader server runs on 1.4.4, and every player must be on the matching 1.4.4 tModLoader build. Do not mix a 1.4.5 client with a 1.4.4 server.
• When the tModLoader 1.4.5 port ships, modded servers and clients move together, so update them at the same time.

Frequently Asked Questions

Is Terraria 1.4.5 out?

Yes. It released on January 27, 2026, and the current stable version is 1.4.5.6 (March 9, 2026).

What is the latest Terraria version right now?

1.4.5.6 on desktop. If you see 1.4.4.9, you are on the older branch that tModLoader still uses.

Will 1.4.5 break my mods?

For now, yes. Mods run through tModLoader, which is still on 1.4.4. Updating vanilla Terraria to 1.4.5 means your mods will not load until tModLoader is ported.

When will Calamity, Fargo’s, and other big mods support 1.4.5?

After tModLoader itself updates to 1.4.5. Individual mods can only port once tModLoader 1.4.5 is available, so expect them to follow the tModLoader timeline, which is still months out.

How do I stop Steam from updating Terraria to 1.4.5?

Play through tModLoader, which stays on 1.4.4, and use the Steam Betas tab to pin a build if you need to hold a specific version for a multiplayer group.

Do I need a new world for 1.4.5 content?

Most additions work in existing worlds, but a fresh world is the cleanest way to see new generation features. Your existing characters, items, and progress are preserved.

Does 1.4.5 change Terraria server setup?

The basics are the same: port 7777, serverconfig.txt, and a default of 16 slots (hard cap 255). The key change is the version split between vanilla 1.4.5 servers and modded 1.4.4 (tModLoader) servers, and the rule that client and server versions must match.