emperoresearch lab
Open weights03/06
EMPERO/02 — MODELShuggingface.co/empero-ai6 MODELS · 6 VARIANTS

Frontier
on your GPU.

Reasoning distills from closed frontier models onto small open weights — led by Qwythos-9B-Claude-Mythos-5-1M (1M-token context, native tool use, GGUF v2 local builds) and Qwable-9B-Claude-Fable-5 — with Qwythos-27B announced as the next larger Mythos model — plus pure-PyTorch ports of frontier architectures so the original weights load, quantize and train without proprietary kernels, all on a single consumer GPU. Apache-2.0 or NVIDIA OML.

01Flagship · Qwythos-9BQWEN3.5-9B · GGUF V2 · 1M CONTEXT · APACHE-2.0
CURRENT FLAGSHIP · GGUF V2 LIVE · QWYTHOS-27B ANNOUNCED

A 9B that checks
its own work.

Qwythos-9B-Claude-Mythos-5-1M is our shipped flagship — a full-parameter reasoning model distilled from Claude Mythos 5 and Claude Fable traces, with a 1M-token context, native tool use, and a +34.3 MMLU lift over its base. The v2 GGUFs are live now: fixed Qwen3.5 runtime metadata, stronger embedded chat/tool templates, normal replacement files, explicit -MTP- variants for draft speculation, and a vision projector. Qwythos-27B is announced as the next larger Mythos model.

Model card on HF GGUF v2 for llama.cpp / Ollama Full eval transcripts
+34.3
MMLU vs base
0.232 → 0.575
1M
token context
YaRN · default
v2
GGUF refresh
templates · MTP · vision
27B
announced next
larger Mythos tier

Matched lm-evaluation-harness run (limit 100). Not every benchmark moved up — gpqa-diamond −0.05, arc-challenge roughly flat. Full table on the model card.

Reason → tool → verify · real transcripts, condensedfrom the published eval set
PROMPT
How many prime numbers are there below 100,000? Verify with python.
TOOL CALLS
python_executor → wrote and ran a primality test → stdout: 9592
<THINK> · REASONING · 2 rounds · 10.5s
This is a counting problem over a fixed range — the kind of thing I should verify rather than recall. I'll write a primality test, count every prime from 2 through 99,999, and run it in the python_executor rather than trusting a memorised figure.
FINAL ANSWER
There are 9,592 prime numbers below 100,000.

I verified this by computing all primes from 2 through 99,999 using a primality test and counting them.

Reaches for a tool to verify rather than recalling a number. Writes the primality test, runs it, reports the checked result.

02Published models6 ON HUGGING FACE · OPEN WEIGHTS
FIG. 02 — Qwythos-9B-Claude-Mythos-5-1MApache-2.0
Qwythos-9B-Claude-Mythos-5-1M

Our shipped flagship. A full-parameter reasoning model on a deeply uncensored Qwen3.5-9B base, post-trained on 500M+ tokens of Claude Mythos and Claude Fable traces with in-house chain-of-thought. Ships with a 1,048,576-token (1M) context via YaRN by default and native function calling — and self-corrects with tools (7/7 on hard factual prompts spanning math, cybersecurity, pharmacology and biochem). Versus the base, under a matched harness: +34.3 MMLU, +30 gsm8k-strict, +19 gsm8k-flex. GGUF v2 adds fixed runtime metadata, MTP variants and vision-projector support; Qwythos-27B is announced as the next larger Mythos member.

Benchmarks
MMLU
57.5
GSM8K (strict)
81
GSM8K (flex)
86
06 — Dispatch

Follow the build.

An occasional dispatch from the lab — progress on Qwythos and Claire, what we found with microverse, new Abacus releases and the one thing we got wrong that week. No hype, no roadmap theatre. Cancel from any line.

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