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Benchmarks

Who is actually stronger: benchmark results, methodology disputes and leaderboard changes.

Latest picks

381–400 of 453

Apr 23Thursday

Hacker News front page

Coding Models Are Doing Too Much

The author programmatically corrupts 400 BigCodeBench problems with single-point bugs to test whether coding models over-edit code during fixes. The post defines the minimal fix as exactly reversing the corruption and measures excess changes with token-level Python Levenshtein distance. The provided body does not disclose final results, model rankings, or training gains.

Why it matters: Strong HKR-K from a concrete 400-task bug-injection eval and a clear minimal-patch metric. HKR-R also lands because over-editing is a daily pain point for Copilot/Cursor/Claude Code users, but the excerpt omits results, model rankings, and effect sizes, so this sits near the low

Apr 22Wednesday

Hacker News front page

Show HN submissions tripled and are now mostly vibe-coded

Adrian Krebs scored 500 recent Show HN landing pages and says submissions have tripled, with 67% of pages triggering at least 2 AI design patterns. The method used Playwright plus an in-page script to check DOM and computed styles across 15 deterministic CSS/DOM signals; manual QA found about 5% to 10% false positives. The real signal is not model quality, but fast homogenization from AI default frontend templates.

Why it matters: This clears HKR-H/K/R: a sharp hook, a concrete 500-page method, and a real nerve for AI builders. I keep it at 78, not higher, because it is a single-author experiment rather than a product launch or a cross-source industry event.

Synced · WeChat

Transformer can be converted into Mamba: Apple uses cross-architecture distillation to make inference cost linear

Apple presents a two-stage cross-architecture distillation path that converts Pythia-1B Transformer into a 1B HedgeMamba, reaching 14.11 perplexity with 10B tokens, about 2.7% of the teacher data. The teacher scores 13.86 PPL, while direct Transformer-to-Mamba distillation jumps above 100; the method first aligns with Hedgehog linear attention, then maps into Mamba initialization and fine-tunes. The key point is the path, not one trick: long-context inference shifts from quadratic to linear cost, and the post says downstream results on ARC, PIQA, BoolQ, RACE, and LogiQA approach the teacher.

Latent Space

OpenAI launches GPT-Image-2

OpenAI shipped GPT-Image-2 in ChatGPT, Codex, and the API. It has thinking and non-thinking variants, with stronger text, layout, editing, multilingual output, and QR codes. Arena ranks it first on 3 Image Arena boards, with 1512 Elo in text-to-image and a +242 lead.

Why it matters: OpenAI shipped GPT-Image-2 across ChatGPT/API/Codex with Arena #1 claims and 1512 T2I Elo. HKR-H/K/R all pass, so this lands in the 85–94 same-day band.

Apr 21Tuesday

QbitAI · WeChat

Mystery model Elephant: 100B parameters reaches same-scale SOTA with high token efficiency

Ant Group's Inclusion AI team is identified as the maker of Elephant, a 100B-parameter model with 256K context and 32K output shown on OpenRouter. The post reports tests on bug fixing, summarizing a 3,000-word meeting note, and a light agent loop, plus AI BENCHY figures of about 2,500 output tokens, about 1 second average latency, and 9.6/10 consistency; the post does not disclose training details, pricing, or an official model card.

Why it matters: HKR-H/K/R all pass: a 100B model posting same-scale SOTA with token efficiency is a strong hook, and the piece includes 256K/32K, ~1s latency, 9.6/10 consistency, plus failure cases. It stays below p1 because training details, pricing, and an official model card are not disclosed

Synced · WeChat

Monet: Enabling multimodal LLMs to reason in latent visual space

Monet trains Qwen2.5-VL-7B into Monet-7B to reason with continuous latent visual embeddings instead of external tools; the work is accepted by CVPR 2026 and releases paper, code, model, and a 125K SFT dataset. The method uses three-stage SFT plus VLPO reinforcement learning; the post reports 3% to 9.75% gains on in-distribution tasks and 2.31% on out-of-distribution abstract visual reasoning versus the base model. The key detail is the VLPO mechanism and dataset construction; the post does not disclose one unified table of absolute headline scores.

Why it matters: This hits HKR-H and HKR-K: the angle is abstract visual reasoning, and the post includes 125K SFT data, a 3-stage SFT setup, VLPO, and 3%–9.75% / 2.31% gains. HKR-R is weaker because full absolute leaderboard scores and real deployment evidence are not disclosed, so it lands as a

Synced · WeChat

Anonymous world model MotuBrain tops WorldArena and RoboTwin2.0

MotuBrain ranked first on both WorldArena and RoboTwin2.0, with a 63.77 EWM Score on WorldArena and 95.8/96.1 in RoboTwin Clean and Randomized settings. The post says it also leads Motion Quality, Flow Score, and Motion Smoothness, and averages 96.0 across 50 RoboTwin tasks versus 92.3 for second place; the post does not disclose its owner, model size, or training setup. The result matters because it supports a single-model path that combines world prediction with robot action, at least on benchmarks.

Why it matters: HKR-H lands on the anonymous double-#1 hook; HKR-K lands on concrete scores across WorldArena and RoboTwin; HKR-R lands on the embodied-AI nerve around one model doing prediction and action. I kept it in the low 80s because ownership, scale, training data, and reproducibility are

Hacker News front page

Even 'uncensored' models can't say what they want

Morgin.ai probed 6 pretrains on 4,442 contexts and found that even “uncensored” models sharply deflate charged words, by hundreds to about 16,000x. It calls this effect flinch: no refusal fires, but token probabilities shift; in one example, qwen3.5-9b-base ranks “deportation” #506 at 0.0014%. The key issue is pretraining-level distribution shaping, not only post-training refusals.

Why it matters: HKR-H lands on the contrarian angle; HKR-K lands on a quantified 4,442-context benchmark and token-level mechanism; HKR-R lands on the 'uncensored model' debate. Original and useful, but still a single-source research post, so it stays below p1.

Apr 20Monday

X · @Yuchenj_UW

Kimi K2.6 is open-source

Kimi K2.6 is now open source, and the RSS snippet says it scored 58.6 on SWE-Bench Pro. The snippet also says it beat GPT-5.4 xhigh and Claude Opus 4.6 max effort. What matters is reproducibility; the post does not disclose weights, license, or eval setup.

Why it matters: All three HKR axes land: the open-source release is a strong hook, the SWE-Bench Pro 58.6 claim is testable, and the open-vs-closed coding race resonates. I keep it at 81 because the post appears title-level only; weights, license, and eval conditions are not disclosed.

r/LocalLLaMA

Training LoRA adapters for Apple's on-device 3B model on a free Colab T4 and a Mac

The author built a QLoRA pipeline for Apple’s on-device 3B model, cutting training needs from about 24GB to about 1GB RAM and 5GB GPU, enough for a free Colab T4 or a 24GB Mac. The post says A100 LoRA, T4 QLoRA, and Mac QLoRA adapters perform about the same, raising accuracy from about 40% to 75%, or 86% with retrieval; it also reports a confirmed Apple bug that writes a hidden ~160MB cache copy per CLI call, reaching 269GB over ~300 runs.

Why it matters: A named first-person experiment with reproducible memory and accuracy numbers clears HKR-H/K/R and beats routine tutorial posts. The score stays below the 85 band because this is a single Reddit post with limited source authority and a narrow benchmark scope.

r/LocalLLaMA

Compared some models for feature planning

A Reddit user tested 9 models on planning a “load tracking” feature for a Go budgeting app, then used Claude Code to rank the generated specs, with Claude Opus 4.6 placed first. The table shows Opus 4.6 produced a 19 KB spec with 44 code reads at $2.47; GLM 5.1 ranked second and Qwen 3.6 35B fp8+vLLM ranked third. Do not treat this as a benchmark: the author says it is not representative, and the post does not disclose any manual quality review yet.

Why it matters: A named first-person test gives real workflow data, so HKR-H/K/R all pass. The ceiling stays low: one task only, ranked by Claude Code itself, and no human acceptance result is disclosed, so this lands at the low end of featured.

r/LocalLLaMA

Actually put Gemma 4 26B to work on something real: extract trading signals from 2,400 earnings calls

A Reddit user fine-tuned Gemma 4 26B on 800 labeled earnings-call transcripts and ran inference on 2,400 transcripts over 3 years on one RTX 4090 in about 14 hours. On 600 out-of-sample transcripts, one signal linked vaguer CFO guidance to about 1.8% sector-relative underperformance over 5 days with IC 0.04. A stronger signal showed 0.85 correlation with sector returns after checks and was discarded as a ghost factor; the key point is factor sanity checks, not the profit claim.

Why it matters: Strong HKR-H/K/R: this is a named first-person experiment with concrete setup, metrics, and a useful negative result. It stays at featured, not P1, because it is one Reddit test rather than a product release or industry-wide event.

QbitAI · WeChat

Sudo, valued above $2 billion, unveils embodied model Sudo R1 with zero real-robot data and ~98% first-try grasp success

Sudo unveiled embodied model Sudo R1 and says it achieved about 98% first-try grasp success in 200+ zero-shot tests with zero real-robot training data, nearing 100% within two attempts. The post says the 60-minute run covered 100+ unseen objects, including transparent, metallic, soft, and reflective items, using integrated world-model and reinforcement-learning training on a high-fidelity simulator. It also says Sudo is valued above $2 billion and is working with CATL, but the post does not disclose round size, benchmark protocol, or third-party validation.

Why it matters: Strong HKR-H/K/R: the zero-real-data, zero-shot, 98% claim is novel and concrete, and it hits robotics' data-cost nerve. Kept below 85 because the metrics are self-reported; funding amount, benchmark definition, and third-party validation are not disclosed.

New York Times Chinese

Chinese humanoid robot 'Shandian' finishes a half marathon in 50:26, faster than the human world record

Honor’s humanoid robot Shandian finished a Beijing half marathon in 50:26, faster than Jacob Kiplimo’s 57:20 human world record. The 1.65-meter robot fell after hitting a barrier, resumed with human help, and far beat last year’s best robot time of 2:40:42. The key signal is stronger robotics engineering, not a disclosed AI leap.

Why it matters: This clears HKR-H/K/R: strong headline contrast plus concrete numbers and conditions. It stays below the top bands because this is a benchmark event, not a directly reusable model or product release, and the control stack and race-rule details are not disclosed.

Apr 19Sunday

r/LocalLLaMA

Same 9B Qwen weights: 19.1% in Aider vs 45.6% with a scaffold adapted to small local models

Using the same Qwen3.5-9B Q4 weights on the 225-task Aider Polyglot benchmark, the author changed only the scaffold and raised mean pass@2 from 19.11% to 45.56%. The little-coder setup is not a new model; it uses bounded reasoning, a write guard, explicit workspace discovery, and small per-turn skill injections. The key claim is scaffold-model fit, but the post reports only two full runs and does not disclose ablations, cross-model replications, or a second benchmark.

Why it matters: HKR-H/K/R all pass: the hook is a 2.4x jump on Aider Polyglot 225 with the same 9B Qwen weights, and the post names the scaffold mechanisms. Importance stays low-featured because evidence is thin: two full runs, no ablation, no cross-model rerun, and no second benchmark.

Synced · WeChat

MIA, a next-generation memory agent framework, aims to end agents' "amnesiac" workflows

A Shanghai Institute for Advanced Learning and ECNU team released MIA, a memory agent framework, and said it achieved the best results on 7 datasets. MIA uses a Manager-Planner-Executor design, dual parametric and non-parametric memory, alternating RL, and test-time continual learning; the post does not disclose exact benchmark scores. The key point is memory as capability internalization, not just retrieval, for open-world agents.

Why it matters: HKR-H/K/R all pass: the story targets agent memory, a real deployment pain point, and includes specific mechanisms. It stays below p1 because the article does not disclose per-dataset scores, baseline gaps, or enough reproduction detail.

Synced · WeChat

Amap debuts an autonomous embodied robot at the Yizhuang Marathon and showcases guide-assistance

Amap showed its quadruped robot Tutu at the 2026 Yizhuang humanoid half marathon, claiming it completed a guide-assistance obstacle task in an open environment without preset routes or teleoperation. The post says its ABot stack includes ABot-N0, which reached SOTA on 7 navigation benchmarks with 88.3% on SocNav, and ABot-M0, which scored 80.5% on Libero-Plus. The key point is the integrated stack across navigation, manipulation, world modeling, and closed-loop correction; the post does not disclose guide-task test scope, commercialization timing, or safety incident data.

Why it matters: HKR-H/K/R all pass: the marathon blind-guidance demo is novel, and the story includes ABot stack details with 88.3% SocNav and 80.5% Libero-Plus. Kept at 80, not higher, because safety incidents, deployment scope, and commercialization timing are not disclosed.

Xinzhiyuan · WeChat

A Berkeley team built an AI that scores perfectly on SWE-bench while fixing 0 bugs

Berkeley RDI used a roughly 10-line conftest.py exploit to score 100% on all 500 SWE-bench tasks while fixing 0 bugs. The post says its agent broke 8 major agent benchmarks with scores from 73% to 100%, via pytest hook tampering, file:// answer reads, and faulty validators. The real issue is benchmark isolation failure, not stronger models.

Why it matters: HKR-H lands on the 'perfect score, zero fixes' contradiction; HKR-K lands on the ~10-line pytest exploit, 500 tasks, and 8-benchmark spread; HKR-R lands on eval-trust anxiety for agent builders. Strong featured research, but not a same-day industry event, so below P1.

r/LocalLLaMA

I tested 8 LLMs as tabletop GMs: a 27B model beat the 405B on narrative quality

The author tested 8 LLMs on 6 fixed tabletop-GM scenarios, and google/gemma-3-27b-it ranked first in narrative quality with a 4.33 overall score. The probe used 8 auto metrics plus 3 LLM-judge scores, and the full run cost about $0.02; the title says a 27B beat a 405B, but the snippet does not disclose the 405B model name or full rankings.

Why it matters: A named first-person benchmark with a strong surprise hook clears HKR-H, HKR-K, and HKR-R. I kept it at featured, not higher: the source is Reddit, the post is truncated, and the 405B model name plus full ranking are not disclosed.

Apr 18Saturday

QbitAI · WeChat

RAG retrieves the right docs but still answers wrong? Saarland University team diagnoses why | ACL 2026

A Saarland University-led team introduced Disco-RAG, adding a 3-step “reading” layer between retrieval and generation, and says the paper was accepted as an ACL 2026 main-conference long paper. The post says it uses RST-based argument trees, cross-passage relation graphs, and outline generation with zero training; it reports gains on Loong, ASQA, and SciNews, but does not fully disclose the exact scores. The key claim is that many RAG failures come from reading and discourse understanding, not retrieval recall.

Why it matters: This is a solid research release with HKR-H, HKR-K, and HKR-R: a strong practical hook, a concrete mechanism, and a pain point RAG builders know well. I keep it at 80, not higher, because the post does not fully disclose benchmark numbers and external replication is still missing