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In Borderlands 4, Eridium can reset Specialization points, start Moxxi’s Big Encore, transfer Firmware between compatible gear, and activate the Ordonite Processor. The current official fee for a Specialization reset is 1,500 Eridium; other published fees are guide-reported or, for the Processor, not stated in official notes. Check the live prompt before spending because patches can change costs.
What can you spend Eridium on?
| Use | What it does | Cost and qualification |
|---|---|---|
| Specialization reset | Refunds endgame Specialization points so you can reallocate them. The Specialization menu opens after the campaign. | 1,500 Eridium, according to Gearbox’s October 2025 update notes, which reduced the previous 5,000-Eridium fee. Gearbox update notes. |
| Moxxi’s Big Encore | Starts a tougher rematch against the weekly featured boss, with a more rewarding loot pool. The featured boss rotates; check the in-game map or activity listing. | Shacknews and All Things How report 100 Eridium per activation. Treat this as a guide-reported fee and confirm the machine’s current prompt. Shacknews; All Things How. |
| Firmware Transfer | Moves a Firmware bonus from a donor item to another item in a compatible category. The donor item is destroyed. Eligible gear includes ordnance, repkits, shields, and—according to guides—class mods and enhancements. | All Things How reports 80 Eridium plus a variable cash cost, while Shacknews describes the Eridium fee as dependent on gear type without giving a number. Treat 80 as a guide-reported figure, not a confirmed universal price, and check the transfer screen. All Things How; Shacknews. |
| Ordonite Processor | Starts enemy waves, some of which drop Ordonite. Recycle collected Ordonite in the Processor to attract corrupted enemies that can drop Pearlescent gear. The repeatable activity has locations in Fadefields, Carcadia Burn, and Terminus Range. | Gearbox confirms activation uses Eridium but does not state the amount in its February 2026 update notes. Check the in-game prompt. Gearbox update notes. |
How the Specialization reset price changed
Some launch-period guides still list a 5,000-Eridium reset. That was the earlier price: Gearbox’s October 2025 notes explicitly reduced the Specialization Respec Machine cost from 5,000 to 1,500 Eridium. Use the current in-game prompt if a later patch changes it.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
![Borderlands 4 Super Deluxe - PC Steam [Online Game Code]](https://m.media-amazon.com/images/I/51o2GwPK6zL._SL160_.jpg)
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Borderlands 4 Super Deluxe - PC Steam [Online Game Code] | $129.99 | Buy on Amazon |
| 2 |
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POP Funko Games: Borderlands 4 - Claptrap | $13.61 | Buy on Amazon |
| 3 |
![Borderlands 4 Deluxe - PC Steam [Online Game Code]](https://m.media-amazon.com/images/I/51E96mSrZaL._SL160_.jpg)
|
Borderlands 4 Deluxe - PC Steam [Online Game Code] | $99.99 | Buy on Amazon |
| 4 |
|
Borderlands 4 - PlayStation 5 | $27.99 | Buy on Amazon |
| 5 |
|
Borderlands 4 | Standard Edition | XBOX Series X|S Digital Code | $69.99 | Buy on Amazon |
How to choose where to spend it
- Need to change your build? Use the Specialization Respec Machine after the campaign.
- Chasing a particular boss’s loot? Check which boss is featured in Big Encore this week, then compare its prompt fee with your available Eridium.
- Want to keep a Firmware bonus on upgraded gear? Transfer it only after checking that the destination is compatible and you are willing to destroy the donor item.
- Farming Pearlescent gear? Use Eridium to activate the Ordonite Processor, then recycle Ordonite there to draw corrupted enemies.
There is no established universal best use: it depends on what you are trying to unlock or improve, what the game currently charges, and whether the activity is available to you.
How to get more Eridium
Several guides identify repeatable activities and incidental rewards as sources. Shacknews calls Vile Bounties an effective endgame source; they become available with Ultimate Vault Hunter Mode and pay Eridium for kills. Guides also list repeatable contracts such as bounties and patrols, challenges, replayable missions, world bosses, regular missions, Vile enemies, and random enemy drops. Campaign and side missions can award Eridium, as can one-time Safehouse and Silo rewards. These are reported routes, not a controlled comparison of earnings per hour, so the best option for an individual run is not established.
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#1 Best Overall
Borderlands 4 Super Deluxe - PC Steam [Online Game Code]
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Epic Games Store’s endgame guide says Ultimate Vault Hunter Rank 1 adds 20% Eridium alongside higher enemy health and other reward modifiers. That figure is from its published guide; check the in-game modifier if a later balance update changes it. Epic Games Store endgame guide.
If you are still progressing through the campaign
Collect Eridium and be cautious about spending based on old reset-price guides: the official October 2025 fee is 1,500, not 5,000. After reaching endgame, choose a spending target based on your immediate goal rather than assuming one activity is always the best value.
Quick Recap
Bestseller No. 1
Bestseller No. 3
Bestseller No. 5
Best Value
Borderlands 4 | Standard Edition | XBOX Series X|S Digital Code
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- Pre-purchase now. Playable on 2025-09-12. Borderlands 4 Deluxe Edition includes: Full base game, the Pre-Order Bonus: Gilded Glory Pack*, the Firehawk's Fury Weapon Skin, and the Bounty Pack Bundle**
- BE A BADASS: Become an unstoppable force of battle, blasting through enemies with an all-new arsenal of outrageous weaponry. Move across the Borderlands like never before—double jumping, gliding, dodging, grappling, and more—dealing death from every direction. Explode each encounter with devastating Action Skills that unleash your Vault Hunter's unique abilities. Craft your perfect build with branching skill trees and a deep, rewarding loot chase full of wild weapons and powerful gear.
- FIGHT SOLO OR CO-OP: Wreaking havoc across Kairos is awesome alone and even better with friends in 2-player splitscreen or up to 4-player online co-op.** Borderlands 4 is designed for co-op from the ground up; whether you're hunting for loot, tackling missions, or wandering freely, level scaling and individual difficulty keeps the party together and having fun.
- LESS BORDERS, MORE LANDS: Freely explore a vast and dangerous world rife with warring factions. Hop on your hover bike and ride through lush fields, towering peaks, and deadly deserts full of fearsome enemies, dynamic events, and engaging quests with unforgettable characters. Unite the people of Kairos and ignite a revolution, tackling this adventure however you see fit in a seamless Borderlands experience.
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