Ai2's method for turning a subword model into one that reads raw bytes is a Nature article dated 7 October 2026. Hugging Face cards list Olmo, Qwen, and Llama checkpoints, and the licences are not all the same.
JetBrains released Mellum2.1, an Apache 2.0 mixture-of-experts coding model with 12 billion parameters and 2.5 billion active. The company says post-training, not a new architecture, is what changed.
Musubi published PolicyLM-1.7B, Apache-2.0 weights that score one message against rules you write in plain language. The latency and accuracy figures are Musubi's own runs.
Liquid AI released d1-3B and experimental d1-omni-600M as open weights under the LFM Open License. Liquid's Decision Index puts d1-3B at 48.57, and Liquid claims 16 ms a question on a Jetson AGX Thor.
NVIDIA says a Nemotron coding system scored 535.4 of 600 at IOI 2026 and a math system scored 30 of 42 at IMO 2026. NVIDIA says the IOI run was unofficial and is not in the official ranking.
Cloudflare posted Clef and Clef-flash on 1 October 2026: Apache 2.0 decision models on Workers AI that return a probability for every allowed answer, plus a hands-on fine-tuning offer.
Anthropic's 29 September 2026 note says GLM-5.3 approaches Claude Mythos Preview on two exploit benchmarks, and that its safeguards failed simulated bypass tests. NIST's September assessment agrees on the capability gap.
Google posted DiarizationLM-Gemma-4-E4B-v1 on Hugging Face on 4 October 2026: an Apache 2.0 model that corrects which speaker said which words in ASR transcripts, fine-tuned on four diarization corpora.
On 3 October 2026 Aleph Alpha released Kolibri, a bilingual German-English mixture-of-experts model with 78.1B total parameters, 3.46B active, Apache 2.0 weights, and context up to 1M tokens.
Ai2 (Oct 2, 2026) open-sources AstaBrief 8B, a Qwen3-8B model with SFT and DPO for one-pass cited scientific reports. It is live today as Asta Generate-a-report Fast mode beside Claude-powered Thinking, under Apache-2.0.
NaiveAI’s Naive-N0.5-Flash (Sep 27, 2026): open-weight 309B MoE / 15.5B active, native 1M hybrid SWA–DSA, MIT on HF. API ($0.10/$0.40/$0.01) and NaiveRT remain future-tense—NaiveRT GitHub still 404 at the time of writing (promised by Oct 12). Benches/tok/s are NaiveAI harness claims only.
Holo4 (Sep 28, 2026): 27B dense (Qwen3.8) + 35B-A3B MoE (Qwen3.6) for GUI/code/MCP/API computer-use. License split: 27B weights CC BY-NC 4.0; 35B-A3B Apache-2.0. Both on H Models API + HF. OSWorld/cost figures are H Company harness claims only. Prefer BF16; context 256K (config max 262,144).
NVIDIA announced Kumo Tabular (HF blog 2026-09-29): open tabular foundation models for cls/reg via structured-data-models. Weights OpenMDW-1.1 on HF; library code Apache-2.0. No Inference Provider—local weights path. The TabArena and #1 claims are NVIDIA’s own.
Perplexity published open-weight pplx-embed-v2-context-9b-preview on Hugging Face (MIT): contextual chunk embeddings for RAG. Preview may break; not on Perplexity API yet. Use encode_queries vs encode; int8 + MRL 1024/2048; transformers≥5.4 + trust_remote_code.
A practical guide to choosing a local model runtime, understanding GGUF and memory needs, and deciding when a desktop setup is enough or a server makes sense.
Black Forest Labs published FLUX.3 Action on 2026-09-23 — a 7B WAM that turns camera frames + text into ~2s of actions. Open weights under FLUX Kommunity License v1.0 (not open source). RoboLab 42.92% is a BFL claim.