Releases · lambda-client/lambda

We are incredibly proud to announce the release of the all-new Lambda Client, a free, open-source utility mod completely rewritten from the ground up for Minecraft 1.21.5.

This is not just an update; it is a new beginning. After over two years of development, we have rebuilt the client to focus on advanced automation, unmatched performance, and complex task execution with minimal micromanagement.

📥 Download & Links

Website: http://lambda-client.org/
Repository: https://github.com/lambda-client/lambda

✨ Key Features & Changes

Automation Engine: Features a full build engine with Litematica integration, conflict-free orchestration, and complex block state handling (rotations, attachments, etc.).
New GUI: A sophisticated interface built on Dear ImGui offering fine-grained control over 1000+ settings.
Elytra Boost: Now capable of speeds up to 200 km/h.

⚠️ Important Notices

2B2T / Grim Anticheat: 2B2T has changed their Grim config as of today. While Lambda is "Anticheat Ready", some features may require a rework or exhibit instability due to this sudden server-side change.
Legacy Client: The previous version of the client has been renamed to Lambda Legacy. It has been archived and moved to: https://github.com/lambda-client/lambda-legacy. Old addons are not compatible with the new Lambda.
Alpha Status: This is an Alpha release. While highly capable, please expect bugs and incomplete features as we progress toward Beta.

What's Changed

Bug Fixes

[1.20.4] [All] Bug: FakePlayer not showing skin by @emyfops in #64
[1.20.4] [All] Bug: Hotkeys not muted while inputting in GUI by @emyfops in #65
[1.20.4] [All] Bug: Inconsistent run in dev environment by @emyfops in #70
[1.20.4] [All] Bug: Logo not found even if it was found by @emyfops in #92

New Features

[1.20.4] Feat: HUD, docking, jesus, particles etc by @Avanatiker in #49
[1.20.x] [All] Feat: Added elytra flight mode boost by @Camii2407 in #50
[1.20.4] Feat: Skybox and fog colors by @Camii2407 in #60
[1.20.4] Feat: Fast vector by @emyfops in #46
[1.20.4] Feat: Sky colors by @emyfops in #72
[1.20.4] Feat: Scaffold by @Avanatiker in #73
[1.20.x] Feat: Elytra flight rocket boost by @Camii2407 in #75
[1.20.4] Feat: Common buffer interface by @emyfops in #80
[1.20.4] Feat: Click Friend by @emyfops in #88
[1.20.4] Feat: StorageESP by @emyfops in #94
[Feature] Fixed rate tick by @Avanatiker in #100
[1.20.4] Feat: Dynamic class remapping by @emyfops in #117
Bring back default keybind for ClickGUI by @mmvanheusden in #123
Feature: ViewModel module by @beanbag44 in #128
Feature: Menu Bar, improved GUI layout and QuickSearch by @Avanatiker in #140
Feature: Manager Loggers by @beanbag44 in #146
Feature: AutoEat and Building Life Maintainance by @Avanatiker in #147
Feature: Rotation lock module by @beanbag44 in #152
Feature: Zoom module by @beanbag44 in #151
Feature: Weather module by @beanbag44 in #156
Feature: Mouse buttons in keybinds by @beanbag44 in #150
Feature: Inventory Manager by @beanbag44 in #161
Feature: User created automation configs with module linking by @beanbag44 in #166
Feature (Module): Add BetterFirework Module by @IceTank in #154

Other Changes

[1.20.x] [All] Feat: Movement and rotation engine by @Avanatiker in #3
[1.20.x] [All] Feat: Freecam by @Avanatiker in #6
[1.20.x] [All] Feat: ClickGUI by @Avanatiker in #8
[1.20.x] [All] Feat: Friends by @emyfops in #12
[1.20.x] [All] Feat: Replay by @Avanatiker in #15
[1.20.x] [All] Feat: Renderer by @emyfops in #11
[1.20.x] [All] Feat: TaskFlow by @Avanatiker in #7
[1.20.x] [All] Feat: ESP by @Avanatiker in #19
[1.20.x] [All] Fix: Settings (don't touch it bites) by @Avanatiker in #22
[1.20.x, 1.21.x] 3d Renderer by @emyfops in #29
[1.20.x] [Forge] Fix: Cannot use locked vanilla registries by @emyfops in #32
[1.20.x] [All] Support major versions by @emyfops in #33
[1.20.x] [All] Feat: PacketMine by @beanbag44 in #53
[1.20.x] [All] Feat: Delegates listeners by @emyfops in #58
[1.20.4] Ref: Reflections dsl builder by @emyfops in #59
[1.20.x] [All] Feat: Discord RPC by @emyfops in #13
[1.20.4] Ref: Various GL optimization by @emyfops in #63
[1.20.4] Ref: Remove NeoForge support by @emyfops in #66
[1.20.4] Ref: Math utils by @emyfops in #68
[1.20.4] Ref: Stability improvements for TaskFlow by @Avanatiker in #48
Update CrystalAura mechanics and rotation update by @Avanatiker in #101
[1.20.4] Ref: Use a proper http library instead of our wrapper by @emyfops in #103
[1.20.4] Ref: Inline setting event functions by @emyfops in #104
[1.20.4] FastVector Y level assertion causes soft-locks by @emyfops in #109
[1.20.4] Feat: New gui, texture api and buffer api by @emyfops in #98
[1.20.4] Ref: Network, authentication and discord by @emyfops in #106
Refactored UI and Improved Rendering Capabilities by @Avanatiker in #112
Testing pipeline by @emyfops in #110
Fix: Setting argument order by @beanbag44 in #129
Feature: FreeLook Module by @IceTank in #127
Managers, Packetmine, Tick Stages, and more... by @beanbag44 in #134
Fix: Fixes the main compatibility issue in the break manager after the 1.21.5 update by @beanbag44 in #135
Fix: Break Manager by @beanbag44 in #138
Improvement: Build Sim Scaffold by @beanbag44 in #137
Fix: KillAura cooldown and swap by @emyfops in #141
Migrate movement processing to latest version by @Avanatiker in #142
Reworked the 3d api by @emyfops in #144
HUD element smart snapping with guides by @Avanatiker in #145
Improvement: NoRender by @beanbag44 in #148
Module: AntiAFK by @Avanatiker in #149
Some backend changes by @emyfops in #155
Refactor: Config passing by @beanbag44 in #157
Improvement: Editable config groups by @beanbag44 in #158
Improvement: Build Simulator by @beanbag44 in #159
Improvement: Manager and build sim docs by @beanbag44 in #162
Documentation cleanup by @emyfops in #163
Add speed Hud element by @IceTank in #164
Fix coordinate hud element in the most scuffed way possible by @IceTank in #165
Ref: Better handling of collection settings by @emyfops in #171
Improvement: Settings split to Setting, and SettingCore for mutability by @beanbag44 in #172
...