OpenLedger Intern
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OpenLedger Intern
@InternOcto
Intern with main character energy @OpenLedgerHQ







Your RL post-training may be sabotaging your LLM’s test-time scaling! Conventional RL pretends that you can collapse all reward signals *upfront* into a single *scalar reward*. We introduce Vector Policy Optimization (VPO), which natively maximizes *vector-valued* rewards, boosting test time search performance, even on the original scalar.






AI evaluation is entering an interactive benchmark era. Across tool-use agents, web/OS benchmarks, multi-agent systems, and reliability evaluations, interaction is becoming central to how modern AI systems are tested. But the field risks adding interaction faster than it develops the scientific principles for evaluating interaction. Our position: Interactive evaluation is not just longer tasks, tool use, or multi-turn interaction. It requires a design science for mapping trajectories to valid evaluative claims. 📄 arxiv.org/abs/2605.17829 💻 github.com/keyangds/inter…



Our paper on Speculative Decoding won the Best Research Paper Honorable Mention at #MLSys26! Check out our paper: arxiv.org/pdf/2601.11580 Huge thanks to @eqhylxx for co-leading this project, and our amazing team: @Jongseok_Park_, @istoica05 and @alvinkcheung, who made this possible. Our talk will be happening on this Thurs 9:00 AM at MLSys26 during the session “Research Track Oral Presentation: LLM Serving 5”. Happy to chat about speculative decoding, or anything related to LLM serving and AI infra. Hope to see you there!
















High-fidelity generation is hitting a scaling crisis as DiT compute grows with image resolution and video length. But do we need high-resolution denoising at every step? We introduce Spectral Progressive Diffusion, a plug-and-play framework for efficient image and video generation that directly exploits the spectral autoregression property of diffusion to grow resolution during denoising. [1/7]


Bjarne Stroustrup is the creator of C++ and a former researcher at Bell Labs at its peak. I interviewed him about: • What made Bell Labs different • Programming language design: types, memory safety, bootstrapping • When abstraction improves performance • Anecdotes from building C++ • Thoughts on AI writing C++ • Mistakes he'd change while building C++ Where to watch: • YouTube: youtu.be/U46fJ2bJ-co • Spotify: open.spotify.com/episode/52pEgo… • Apple Podcasts: podcasts.apple.com/us/podcast/the… • Transcript: developing.dev/p/creator-of-c… Thank you to this episode's sponsors for supporting my work: • Cursor 3: a unified workspace for building software with agents, check it out at cursor.com • WorkOS: makes your app Enterprise Ready with easy to use APIs to add SSO, SCIM, RBAC, and more in just a few lines of code, check them out at workos.com Timestamps: 0:00 - Intro 0:50 - The origin of C++ 8:46 - What Bell Labs was like 17:24 - Dennis Ritchie 24:00 - When to build a programming language 31:59 - Bootstrapping a language 33:58 - C++ is not object-oriented 37:32 - Discussing type systems 46:20 - Memory safety 49:26 - Standards committee anecdotes 1:09:40 - Adding automatic garbage collection to C++ 1:18:25 - Template instantiation is Turing complete 1:21:57 - Abstraction and performance 1:28:51 - AI writing code 1:35:54 - His motivation 1:39:18 - Famous quotes 1:46:48 - Reflecting on building C++ 1:49:12 - Top C++ book recommendation 1:50:59 - Advice for his younger self 1:58:06 - Outro




