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Lewis Tunstall

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@_lewtun

🤠 post-training @huggingface
Berne, Switzerland transformersbook.com Joined August 2018
568 Following 21K Followers 6.1K Posts

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Lewis Tunstall Verified account @_lewtun
Today we're releasing Carbon-X, a 14B model that brings DNA and natural language together for the first time 🧬

1. Beats every open language model we tested across DNA benchmarks. Within a point of GPT-6.1 Sol at >1,000× lower inference cost.

2. Mid-trained on 300B tokens of interleaved DNA and text, followed by SFT (without distillation!) and RL.

3. A new hybrid tokenizer encodes DNA using ~3× fewer tokens than BPE.

4. Gives other models a DNA specialist subagent: Kimi K3 gains 11.1 points when it consults Carbon-X.

5. Runs locally on a laptop with llama.cpp. Apache 2.0. Your DNA stays on your hardware.

Model: huggingface.co/HuggingFaceBio…
Blog: huggingface.co/spaces/Hugging…
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Loubna Ben Allal Verified account @LoubnaBenAllal1 Oct 22
Introducing Carbon-X: The best open DNA model.

We midtrained a 14B model on DNA and text, and it beats every open language model and matches GPT-6.1 Sol at 1,000x lower cost.

Ask it about a sequence, what a mutation does, or to generate new DNA.

huggingface.co/HuggingFaceBio…
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Lewis Tunstall Verified account @_lewtun
I haven’t seen Nouamane in person. for more than a year. Now I know why
Nouamane Tazi @Nouamanetazi Nov 5
📖 The Ultimate MoE Training Handbook 📖

We spent 1/2M GPUh to optimize MoE training and wrote the most comprehensive blog about it. With 30k words and 50+ interactive figures it covers everything from profiling to large cluster training.
huggingface.co/spaces/hugging…
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Lewis Tunstall Verified account @_lewtun
great to see more specialised models for the natural sciences!

despite recent claims on the "death of specialised ML", it's pretty clear that frontier models will need to be orders of magnitude cheaper in order to be effective at the large scales needed for science.

results like these show how specialised models are far better used as tools by the generalist models, rather than trying to cover every single domain of inquiry with "big blobs of compute"
Ellen Zhong Verified account @ZhongingAlong Nov 2
A cost and timing comparison 💸

ChefNMR2 has up to 2,170× lower median runtime and 360× lower median cost per molecule than the frontier LLMs we tested. 9/
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