RWKV-7-G1a-0.4B_BRIK

RWKV-7 « G1a » 0.4B — BRIK (int4)

RWKV-7 G1a 0.4B (BlinkDL, Apache-2.0) converted to the BRIK format so it runs inside the browser on the visitor's GPU (WebGPU) — no inference server. Converted from a F16 GGUF.

An Apache-2.0 option of the Brimkern catalogue, measured against the 149 MB LFM2.5 that was the widget default until SDK 0.8.0. (Since 0.8.0 the default is Qwen3-0.6B Shop EN/FR, 290 MB, itself Apache-2.0.)

Try it in one click

👉 https://brimkern.com/chat?model=romainkh14/RWKV-7-G1a-0.4B_BRIK

The file is streamed by HTTP Range, cached by the browser, then reusable offline. Nothing is sent to a server: the prompt and the generation stay on the machine.

Why RWKV here

RWKV-7 is recurrent: a fixed-size state (~1 MB) replaces the KV cache, so memory does not grow with the conversation. And it is Apache-2.0 — the most permissive weights in the catalogue, with no restriction on commercial use.

Embed it in a site (SDK)

<script src="https://brimkern.com/sdk.js"></script>
<script>
  Brimkern.embed({
    model: 'https://huggingface.co/romainkh14/RWKV-7-G1a-0.4B_BRIK/resolve/main/rwkv7-g1a-0.4b-q4.brik',
    title: 'Assistant',
  });
</script>

Requires [email protected] or later (the release that added RWKV-7 dispatch to the SDK). Computation runs on the visitor's GPU: no per-token cost, no rate limit, and the weights download only if someone actually opens the widget.

Measured

Chrome, Apple Silicon laptop, production build — replayable benches in scripts/e2e/:

The two failures are the same case in both languages: reading one row of a table (26.0/26.5 cm instead of 27.0). Refusals, greetings and two-number disambiguation all hold. Against the LFM2.5-230M, the default at the time (12/12, 149 MB, LFM 1.0 license), the Apache option therefore costs 2× the download and loses table reading — which is the whole point of publishing both.

Format

A .brik is a self-describing container: architecture, tokenizer and configuration travel inside the file, weights are pre-quantized in the layout the kernels read, and every layer is one contiguous HTTP range — partial load, resume after a drop, offline afterwards. Specification: BRIK_FORMAT.md.

License

Weights under Apache-2.0 (RWKV-7 G1a, BlinkDL). The Brimkern engine itself is MIT.