MuJoCo, RL inference, and humanoid control — on RISC-V.
The Humanoid repo explores SpacemiT K3 in a validation-stage workflow for Unitree G1 control simulation.
A PC runs MuJoCo, while K3 runs the control and RL inference side in the validation setup.
ACT-powered robot arm inference on RISC-V.
LeRobot App runs SO101 arm workflows on SpacemiT K3, covering data collection, ACT training, and local inference.
SmolVLA fine-tuning and distributed inference workflows are also included.
In July, SpacemiT continued to advance upstreaming efforts:
Foundational support has been officially released in Binutils 2.47 and LLVM 23, while CPU targets (X100 and A100) for the K3 and matrix extension instructions for AI computing have successively been merged into the mainline. Regarding the Linux kernel, support for K1/K3 features—including frequency scaling, storage, networking, PCIe, USB, and audio—as well as support for various development boards, is being steadily integrated. Meanwhile, adaptation and optimization work for projects such as Box64, OpenOCD, U-Boot, and OpenSBI continues to progress, further enriching SpacemiT’s RISC-V software and hardware ecosystem.
Here are the details：
This month, baseline SpacemiT support was released as part of Binutils 2.47 and LLVM 23. LLVM/Clang also adopted the SpacemiT X60 scheduling model as a general optimization reference for RISC-V '-mtune=generic'.
Support for the K3's two main CPU targets, X100 and A100, has been merged upstream into LLVM and GCC. The custom matrix-extension instructions intended for AI workloads have been merged into LLVM, GCC, and Binutils. The X100 scheduling model and instruction-fusion support have also landed upstream in LLVM.
Developers can now use community-mainline Clang/LLVM and GCC with '-mcpu=spacemit-x100' or '-mcpu=spacemit-a100' to target the corresponding CPU core and use SpacemiT's custom AI instructions.
The SpacemiT X60 scheduling model is now available upstream in LLVM and is used as a general tuning reference for RISC-V '-mtune=generic'. When no specific microarchitecture is selected, LLVM/Clang can use the X60 model to make better instruction-scheduling decisions.
LLVM's community performance-tracking infrastructure also includes a real K1/X60 hardware platform, allowing related compiler optimizations to be continuously validated on actual hardware.
Linksee is a demo-ready wheeled robot project with ROS 2-based chassis control, odometry, LiDAR integration, SLAM mapping, and navigation.
Vision follow, voice control, and dance — on RISC-V.
Reachy Mini is demo-ready on SpacemiT K3-COM260, with a MuJoCo simulation control path also included.
In July, SpacemiT continued to advance upstreaming efforts:
Foundational support has been officially released in Binutils 2.47 and LLVM 23, while CPU targets (X100 and A100) for the K3 and matrix extension instructions for AI computing have successively been merged into the mainline. Regarding the Linux kernel, support for K1/K3 features—including frequency scaling, storage, networking, PCIe, USB, and audio—as well as support for various development boards, is being steadily integrated. Meanwhile, adaptation and optimization work for projects such as Box64, OpenOCD, U-Boot, and OpenSBI continues to progress, further enriching SpacemiT’s RISC-V software and hardware ecosystem.
Here are the details：
This month, baseline SpacemiT support was released as part of Binutils 2.47 and LLVM 23. LLVM/Clang also adopted the SpacemiT X60 scheduling model as a general optimization reference for RISC-V '-mtune=generic'.
Support for the K3's two main CPU targets, X100 and A100, has been merged upstream into LLVM and GCC. The custom matrix-extension instructions intended for AI workloads have been merged into LLVM, GCC, and Binutils. The X100 scheduling model and instruction-fusion support have also landed upstream in LLVM.
Developers can now use community-mainline Clang/LLVM and GCC with '-mcpu=spacemit-x100' or '-mcpu=spacemit-a100' to target the corresponding CPU core and use SpacemiT's custom AI instructions.
The SpacemiT X60 scheduling model is now available upstream in LLVM and is used as a general tuning reference for RISC-V '-mtune=generic'. When no specific microarchitecture is selected, LLVM/Clang can use the X60 model to make better instruction-scheduling decisions.
LLVM's community performance-tracking infrastructure also includes a real K1/X60 hardware platform, allowing related compiler optimizations to be continuously validated on actual hardware.
From desktop robots to humanoid control on RISC-V.
This week, we’re sharing 4 robotics repos built around SpacemiT K3: Reachy Mini, Linksee, LeRobot App, and Humanoid.
Explore vision interaction, SLAM/navigation, robot arm local inference, and humanoid control validation.
Follow the updates:
https://github.com/spacemit-com/.github/blob/main/profile/README.md#open-source-project-status
If you already have a SpacemiT K3 board, we’d like to see what you are actually doing with it.
We are looking for developers who are willing to share real K3 experience, especially on:
There are two ways to join.
This track is for real usage feedback.
You can submit:
A good Super Point post just needs to be specific enough for other developers and our engineers to understand what happened.
Suggested format:
[Super Point] Your title
Post here: https://forum.spacemit.com/c/eco-hardware/26-category/26 and on this subreddit.
This track is for projects, demos, and application cases built on K3.
You do not need a perfect finished product. A running prototype is welcome if it has a clear use case, basic documentation, and enough detail for others to reproduce or learn from it.
Good submissions may include:
Suggested format:
[Super Spark] Project name
Post in the competition section: https://forum.spacemit.com/c/competitions/21 and on this subreddit.
Submit project page: https://www.spacemit.com/community/lab/createProject
We want to reward both useful feedback and great projects, while keeping the program focused on real engineering value.
For Super Point, each valid post earns 1 point.
When you collect 5 points, you can contact the official SpacemiT administrator (@u/Icy-Primary2171) to redeem a SpacemiT Developer T-shirt.
The SpacemiT Developer T-shirt is designed as a thank-you for hands-on field reports from overseas developers.
Reward process:
It is not a pay-per-post program. Repeated low-effort posts, duplicated content, AI-generated filler, or reports without real K3 usage details will not be counted. All rights of final interpretation belong to SpacemiT.
For Super Spark project submissions, selected projects may receive:
Monthly selections will prioritize projects that other developers can reproduce or learn from. A small demo with clear steps, code, screenshots, and honest limitations is more valuable than a polished post with little technical detail.
Super Point selections focus on whether the feedback is specific, reproducible, and useful for product iteration, documentation improvement, compatibility validation, or developer experience.
Super Spark selections focus on technical depth, reproducibility, documentation clarity, and whether the project shows a meaningful K3 use case.
The goal is simple: make more real things run on K3, document the process, and let useful work be seen by more developers.
Original announcement: https://forum.spacemit.com/t/topic/1333
Hi everyone,
Quick but important update — this community is now change to "Public" mode.
We found our community set to "Restricted" automatically. We sincerely apologize for the inconvenience this restriction may have caused over the past few weeks.
Starting now:
One quick housekeeping note: Please try to use the appropriate post flairs. And if you spot any spam or toxic behavior, feel free to tag the mods.
Happy coding!
Hello everyone,
We're excited to announce the official release of Bianbu LXQT v2.3.5! This is a fairly complete and stable release, refined through multiple iterations. v2.3.5 is built on the Ubuntu 24.04.1 source code. Since 24.04 is Ubuntu's Long Term Support (LTS) release, K1 will be maintained long-term based on this version.
Important note: This release currently supports the K1 platform only. K3 is not yet supported.
Detailed release notes: https://spacemit.com/community/document/info?lang=en&nodepath=software/SDK/bianbu/release_notes/bianbu_2.3.md
Image download links: https://spacemit.com/community/resources-download/Images%20Collects/K1/Bianbu
We'll continue improving the user experience based on your feedback. Your input matters!
If you run into any issues or have suggestions, feel free to reply to this post.
Let's build a better Bianbu LXQT together!
This month, SpacemiT Triton was updated to version 0.5.5, improving the K3 Triton operator IR codegen; the SpacemiT llama.cpp multimodal plugin supports more speech and vision models, and a new streaming 3D reconstruction model, LingBot-MAP, was added; the first patch was submitted to oneDNN, and all four PRs have been merged.
merged：
review：
merged：
review：
Board-level DTS / Device Support：
General Repair：
This month, riscv-elf-psabi was merged into the naming conventions of OpenMP declare simd vector functions, laying the foundation for ABI support for vectorized math libraries such as libmvec; binutils was merged into support for K1/K3 extended instructions.
Hi all,
We want to give a transparent update to everyone who has placed an order for the SpacemiT K3 through our ecosystem hardware partners.
Current stock status: Most configured variants across our five authorized partners (BPI, Firefly, Milk-V, Sipeed, and Ztcd) are sold out.
If you placed an order and haven't received a shipping notification, your reseller is waiting on new stock from us. Here's the timeline:
We're genuinely grateful for the demand — all five channels selling out at the same time is a strong signal, and we're moving as fast as we can to restock. We expect to ship the next batch to all partners no later than June 30. Thank you for your patience.
For the full list of partner store links: https://www.reddit.com/r/spacemit_riscv/comments/1tcrx4o/
We had a great time at Ubuntu Summit this year. Canonical and SpacemiT sat down together to talk about how we're working to accelerate open innovation for the RISC-V community.
Full talk: https://youtu.be/BaY2l17OBRQ?si=TyNv_frpUDrAsbvY
Summit highlights: https://www.youtube.com/watch?v=tErujp4RAWQ
image download link: https://github.com/spacemit-com/K3-Ubuntu-Images
Here's a roundup of 2026 May's upstream contributions from the SpacemiT. Lots of activity across Linux kernel, LLVM, U-Boot, and several community projects.
merged：
patch:
Board-level DTS / Device support:
Bug fix:
Major updates：
SpacemiT Tritonoperator library merged into FlagOS：
https://github.com/flagos-ai/FlagGems/pull/2527 ，merged
Monthly update for the SpacemiT Triton compiler：
https://github.com/spacemit-com/spine-triton/releases/tag/0.5.4
merged:
patch:
box64：
riscv-gnu-toolchain:
binutils：
Since the K3 launched, we've been reading every post, comment, and benchmark thread. Thank you. Here's our honest response to the main concerns:
1. Price
We hear you. The K3 is not cheap, and the main reason is memory cost. We're not happy about it either.
2. Power consumption and process node
Fair criticism. We're a startup with limited R&D budget, which means we can't access the leading-edge process nodes that mobile ARM SoCs use. That directly affects power efficiency. We know it, and it's something we're working toward as we grow.
3. CPU core performance
We've received your feedback loud and clear. Our next-generation cores are already in development:
We're not standing still.
We're a team that genuinely believes in RISC-V — not as a business strategy, but as a conviction. We read your posts, we take the criticism seriously, and we're building toward something better.
Huge thanks to all of you in our developer community — for your trust, your feedback, and your passion. We will never stop improving, and we'll always keep listening.
We're excited to share that SpacemiT has partnered with BayLibre to successfully run Android 16 on the SpacemiT K1 SoC (RISC-V RVA22 + RVV 1.0).
What was achieved:
The entire project was built on 100% open-source software — AOSP, mainline kernel, no NDAs, no proprietary blobs. Anyone in the community can rebuild the image from scratch.
Source code: https://github.com/BayLibre/android_manifest
Full write-up: https://baylibre.com/blog/baylibre-partners-with-spacemit-to-bring-android-16-to-risc-v/
We welcome the community to test, contribute, and help push RISC-V + Android forward.
Questions welcome!
> # Bpi > Official Community Store: > > K3 Pico-ITX: https://www.bpi-shop.com/products/k3-pico-itx-spacemit-k3-8-cores--60tops-al-performance-wifi6.html > > SM10(K3-CoM260): https://www.bpi-shop.com/products/bpi-sm10-k3-com260.html > > Official Community Taobao Store: > K3 Pico-ITX: https://item.taobao.com/item.htm?ft=t&id=1043031894619 > > Official Community AliExpress Store: > > K3 Pico-ITX: https://ko.aliexpress.com/item/1005012094252889.html?gatewayAdapt=glo2kor > > SM10(K3-CoM260): https://ko.aliexpress.com/item/1005012093646130.html?gatewayAdapt=glo2kor > > SINOVOIP Official AliExpress Store: > > K3 Pico-ITX: https://ko.aliexpress.com/item/1005012090517358.html?gatewayAdapt=glo2kor > > SM10(K3-CoM260): https://ko.aliexpress.com/item/1005012089531920.html?gatewayAdapt=glo2kor
> # Firefly > > Taobao: https://item.taobao.com/item.htm?ft=t&id=1043452574021
> # Milkv > > JD.com: https://ic-item.jd.com/10210343127962.html > > arace: https://arace.tech/products/milk-v-jupiter-2-series-coupon
> # Sipeed > > Taobao: https://item.taobao.com/item.htm?id=1051719804419&spm=a213gs.v2success.0.0.27a94831QVqJz3 > > Official Site: https://sipeed.com/k3
> # Ztcd > > Taobao: https://item.taobao.com/item.htm?id=1017114007827&mi_id=0000s997MxAXGmswkoFaxBHfMyc0112yXV902pXGuAHaTxA&spm=a21xtw.29178619.0.0&xxc=shop
