Most of the field treats efficiency as something you do to a model after it is finished. We train for it. What breaks when a model gets cheaper to run is rarely knowledge, it is behaviour, and it breaks quietly while the usual numbers keep looking fine. So we gate on behaviour and publish what the gate measured.
OPEN WEIGHTSNATIVE INFERENCEAGENT RUNTIMESEXECUTION-VERIFIED EVALSREPRODUCIBLE RESEARCH
94.1%Behavior retention111 / 118 · BTL-4 Compact
9.96 GB35.1B MoE GGUF2.30 bpw · stock format
2.1BActive parametersper token · routed MoE
31.9 t/sMacBook decodeM4 · full Metal offload
Selected output
Already running on other people's hardware.
Models are one layer. We also build the runtime, memory, agent scaffolding, evaluation, and deployment path around them.
01Open-weight MoE
BTL-4 Compact
A 35.1B mixture-of-experts model released as a 9.96 GB stock GGUF.
BTL-4 Compact keeps the model in a standard llama.cpp-compatible format while preserving 111 of 118 teacher-correct behaviors on the release gate. The paper records the range-selection result, expert-level ablations, and the boundary of the claim.
A 27B model trained to act, verify, recover, and know when to stop.
The frozen RL-0013 release combines agentic coding with structured tool use. It ships with complete evaluation evidence, a full-quality adapter, and a native compact edition.
Each project attacks a different failure mode: weak tool mechanics, forgotten context, unsafe autonomy, expensive inference, or perception that starts over every frame.