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Introducing Clef: our open-source decision models, and new RL fine-tuning platform
We are introducing Clef and Clef-flash, open-source decision models hosted on Workers AI for high-speed classification and agentic workflows. Also launching: a new reinforcement learning platform that allows developers to fine-tune decision models using their own data.
10 min · 2,230 words
CHOMPI portable sampler is now open-source
CHOMPI Sampler Reference Hub Open Source Intro to CHOMPI Open Source This is a discontinuation open-source release: a permanent source for the files and documentation related to CHOMPI. To customize it, clone the repo into your own GitHub. While we won’t be doing any more file updates, the CHOMPI Club will live on in the Chase Bliss Discord](https://discord.gg/q3KcumMcBB). Check out the CHOMPI Open Source channel to discuss the project, share what you make, and see what others have made on their
4 min · 876 words
PlanetScale Released Text Search and We Have a Lot to Say (Part I)
Two BM25 optimizations and benchmark configuration changes inspired by PlanetScale's TIN benchmarks make ParadeDB's text search faster without changing its document identifiers.
14 min · 3,188 words
Python 3.15 ships with a new profiler. It is called Tachyon, it lives in the standard library as the profiling.sampling module, and unlike cProfile it is a sampling profiler rather than a tracing one. I now have a set of hands-on workshops for it, which you can find at github.com/GrahamDumpleton/tachyon-workshops or on the workshops page of this site, and they have reached the point where I am happy for other people to do them. That said, they were not written for other people in the first place. They were written so I could learn Tachyon myself, and the reason I wanted...
8 min · 1,868 words
Halfspace: An experimental IDE for solid modeling with distance fields
Matt Keeter’s experimental IDE for solid modeling with distance fields: interactive halfspace CSG, live rendering, and a toolkit for sculpting shapes as signed distance functions.
6 min · 1,448 words
Git 3.0's upcoming SHA-256 default will be a costly mistake
Git 3.0 will make SHA-256 the new default content hashing algorithm and it will be an incomprehensibly expensive and ultimately valueless and avoidable global nightmare.
17 min · 3,902 words
zenkai: The App Launcher I Wrote Because I Wanted Something Fast and Beautiful
Dayvster builds zenkai, a Zig + Qt6 cross-platform app launcher with ~140ms startup (sometimes ~20ms), 65+ themes, Lua plugins, and a sandbox—written as a hobby performance deep dive.
2 min · 571 words
Earendil's experimental Pi Durable harness brings Pi's minimalism to long-running agents: crash-safe tasks, multi-conversation concurrency, pluggable extensions, compaction, durable documents, and multiplayer steering on JS runtimes.
5 min · 1,053 words
Earendil ships Pi 1.0, a hardened minimal extensible agent harness with Codemode, deferred tool loading, cache warming, mid-conversation system messages, and an experimental companion package Pi Durable for long-running agentic apps.
2 min · 532 words
Garbage Collection: Generational? Incremental? Both!
The third Language Summit talk was brought by Mark Shannon, who is the author of the incremental garbage collector implementation shipped in Python 3.14 that was reverted back to the generational garbage collector from Python 3.13 after reports of “significant memory pressure” in production environments. The original goal of the new incremental garbage collector was to reduce maximum pause times by an order of magnitude for larger heaps.
5 min · 1,173 words
Edward Kmett's week-old Turbo Haskell Compiler (THC) JITs GHC Core onto Truffle/GraalVM, supports AOT Native Image, polyglot FFI, Loom green threads, and can compile pandoc, happy, alex, and GHC itself.
2 min · 506 words
Effect 4.0 rebuilds the TypeScript effect system from the ground up: zero-dependency core, ~5× smaller bundles, ~6.4× concurrent throughput, 86% less memory per fiber, and a long-term support policy through at least 2029.
2 min · 433 words
01 Fiscal sponsorship Receive and manage donations on behalf of EDG. The EDG open source transition On September 30, 2026, the source for EDG's C++ front end goes public, and The C++ Alliance becomes its nonprofit home. Same engine, same standards, professionally maintained, and open to contributions. Continuity is the point. This is a change of steward, not a change of course.
3 min · 730 words
We are thrilled to announce the latest release of Gitea v28.0.0. Gitea drops the historical 1. prefix from its version numbers, so this release is 28.0.0 rather than 1.28.0. Highlights include audit logging, bot accounts, HTTPS deploy tokens, user impersonation for administrators, codeowner approval rules, diff file filters, and an Actions queue view. See the changelog for everything else.
18 min · 4,204 words
Browserbase’s Harsehaj Dhami explains Web Bot Auth: cryptographic HTTP message signatures that let AI agents prove identity, while leaving access and reputation decisions to site owners and registries.
5 min · 1,123 words
Deser: Rethinking Rust Serialization
Armin Ronacher revisits Deser, an experimental Rust serialization library that inverts Serde’s visitor recursion into heap-backed sinks/emitters—trading some performance for lossless buffering, composable adapters, XML namespaces, and no stack overflow on deep nests.
2 min · 492 words
OpenClaw Enterprise - The Open Agent Platform
The OpenClaw Foundation announces OpenClaw Enterprise (OCE): an open-source, vendor-neutral control plane for persistent agents with multi-tenancy, hard security boundaries, and governance—developed with Red Hat and NVIDIA after originating at OpenAI.
3 min · 592 words
Yet Another AI Security OSS Externality
Holden Karau recounts working AI-lab vulnerability reports during Apache Spark releases, and why AI security often externalizes cost onto open-source maintainers who lack resources to verify opaque claims.
9 min · 2,135 words
Hugging Face’s Tarek Ziadé explains Serge, a CI agent that finds Transformers failures, reproduces them on GPUs, writes patches, verifies them, and opens PRs—29 merges in ~80 days.
9 min · 2,070 words
Floppy Emu Hardware Failure Analysis Results
Steve digs through years of Floppy Emu QA failures and returns: clock crystals dominate the failure table, with CPLDs, programming misses, and soldering filling out a detailed hardware autopsy.
5 min · 1,165 words