textilelabs/Loom-Weave-2

Loom Weave 2

~60M parameters · Textile Labs

A small model built on a simple bet: at this size, honesty and judgment are more achievable than broad knowledge — and more useful than a model that guesses confidently. Loom Weave 2 doesn't know much. It knows what it doesn't know, and it knows when to reach for a tool instead of inventing an answer.

Honest limitations — read this first

This is a ~60M parameter model. It does not have broad world knowledge, cannot do multi-step reasoning, cannot reliably do arithmetic itself (it routes arithmetic to a calculator tool instead — see below), and will get plain factual questions wrong if no tool is available to check them.

Measured on an internal probe set, out of the four things this model is trained to do:

	measured
States its identity correctly	93%
Admits it can't know something about you, rather than inventing an answer	69%
Routes to the correct tool — phrasing close to training	87%
Routes to the correct tool — phrasing and numbers it has never seen	77%
Ends its own reply without needing a stop token	91%

Read the calibration number carefully: it still invents an answer to unanswerable personal questions roughly 3 times in 10. It is meaningfully better at this than guessing, not solved.

Important — this model is a tool selector, not a tool executor. The routing numbers above measure whether it picks the right tool (search vs calc vs time, etc.) — they do not measure whether the query it writes inside the tag is accurate. In particular, the calc tool sometimes rewrites the numbers you gave it rather than preserving them exactly. Your harness should re-derive the tool's arguments from the original user message, not trust the text the model puts inside <tool>...</tool>. Picking the right tool for the job is the reliable part; extracting exact arguments is not.

The tool protocol

Loom Weave 2 doesn't call tools directly — it emits a request, and whatever runs it (your code) is responsible for actually performing the lookup and continuing the conversation.

When it needs information it doesn't have, it replies with:

<tool>NAME: query</tool>

where NAME is one of five fixed tools:

tool	for
search	general facts, current information, anything lookupable
calc	arithmetic
time	current time/date in a place
doc	a document already in context
note	saving something for later

Your harness performs the actual lookup and continues the conversation with:

<result>the answer goes here</result>
<loom>

so the model can read the result and reply from it. Without a harness wired up, the model will still emit the tool call — it just won't get an answer back.

Prompt format

<user> your message here
<loom>

No trailing space after <loom>. Multi-turn conversations just continue the same pattern, appending each new <user> / <loom> pair.

Usage — transformers

from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

tok = AutoTokenizer.from_pretrained("textilelabs/Loom-Weave-2")
model = AutoModelForCausalLM.from_pretrained("textilelabs/Loom-Weave-2")

prompt = "<user> who are you\n<loom>"
ids = tok(prompt, return_tensors="pt", add_special_tokens=False).input_ids
out = model.generate(ids, max_new_tokens=80, do_sample=True,
                     temperature=0.8, top_k=50, pad_token_id=tok.eos_token_id)
print(tok.decode(out[0][ids.shape[1]:], skip_special_tokens=True))

Usage — Ollama

ollama run hf.co/textilelabs/Loom-Weave-2

That pulls the GGUF straight from this repo. Ollama applies the template and params files also included in this repo — no local setup needed. For raw-mode / API use (POST /api/generate with "raw": true), format the prompt yourself exactly as shown above in Prompt format.

Two GGUF files are provided: loom-weave-2-q8_0.gguf (64MB, quantized, recommended for everyday use) and loom-weave-2-f16.gguf (120MB, full precision).

What it's for

• A tool router in front of a larger model — cheap, instant, and correctly picks search/calc/time/doc/note without needing an API call itself
• An offline or embedded assistant where the host application supplies the actual tools
• A base for fine-tuning — a small model that already has tool structure and calibrated refusal trained in, rather than a raw base

What it's not for

General chat, factual Q&A without tools connected, anything needing real reasoning or arithmetic it has to do itself.

Files

config.json / model.safetensors          the model (transformers format)
tokenizer.json / tokenizer_config.json   custom BPE tokenizer, 16,384 tokens
generation_config.json
loom-weave-2-q8_0.gguf                   quantized GGUF, for Ollama / llama.cpp
loom-weave-2-f16.gguf                    full-precision GGUF
template / params                        read automatically by `ollama run hf.co/...`
Modelfile                                for building locally: ollama create loom-weave-2 -f Modelfile

License

MIT. See LICENSE.