Model reference · open weights

Falcon-H1-Deep

LLMs tiiuae Text gen 1 build Its own licence terms 10k dl/mo

Falcon-H1-Deep is an open-weight language model from tiiuae. Falcon-H1-1.5B-Deep-Instruct (BF16) weighs 3.1 GB; the smallest configuration that runs it is RTX 3060 12 GB.

  • Falcon-H1-Deep is a 1.6B parameter causal decoder-only language model developed by tiiuae for text generation tasks.
  • It utilizes a hybrid architecture combining Transformers and Mamba, supports English and multilingual inputs, and features a context length of 131,072 tokens.
  • The model is distributed under the Falcon-LLM License.

Summary of the tiiuae/Falcon-H1-1.5B-Deep-Instruct model card, 2026-10-01

What it is

Released bytiiuae
Released2025-05-01
Parameters1.6B
VRAM3.1 GB for the weights

What it runs on

Memory and cards for Falcon-H1-1.5B-Deep-Instruct (BF16)

3.1 GBweights, file size
68 MBcache per 1K tokens
105 MBfixed state per request
543 MBruntime overhead, at least
131,072 tokenscontext max
CardRequests at onceContext maxMemory
8K each32K each
RTX 3060 12 GB123113K11.6 GB
RTX 4060 Ti 16 GB175all 128K15.4 GB
RTX 3090 24 GB298all 128K23.4 GB
RTX 4090 24 GB298all 128K23.4 GB
RTX 5090 32 GB4111all 128K31.0 GB
L40S 48 GB6117all 128K44.0 GB
A100 80 GB11332all 128K78.2 GB
H100 80 GB10830all 128K78.1 GB
RTX PRO 6000 Blackwell 96 GB13237all 128K93.8 GB
DGX Spark (GB10) 128 GB unified15243all 128K107 GB
H200 141 GB19956all 128K138 GB
B200 180 GB25673all 128K176 GB
Memory needed at each load
Requests at once8K tokens each32K tokens each
14.3 GB6.0 GB
56.9 GB15.3 GB
88.9 GB22.2 GB
1614.2 GB40.8 GB
3224.7 GB77.9 GB
6445.8 GB152 GB

One card, with vLLM's small-card settings.

From the model card

What tiiuae says about Falcon-H1-Deep

Read the model card
  1. TL;DR
  2. Model Details
  3. Training Details
  4. Usage
  5. Evaluation
  6. Citation

TL;DR

Model Details

Model Description

  • Developed by: https://www.tii.ae
  • Model type: Causal decoder-only
  • Architecture: Hybrid Transformers + Mamba architecture
  • Language(s) (NLP): English, Multilingual
  • License: Falcon-LLM License

Training details

For more details about the training protocol of this model, please refer to the Falcon-H1 technical blogpost and Technical Report.

Usage

Currently to use this model you can either rely on Hugging Face transformers, vLLM or llama.cpp library.

Inference

Make sure to install the latest version of transformers or vllm, eventually install these packages from source:

pip install git+https://github.com/huggingface/transformers.git

For vLLM, make sure to install vllm>=0.9.0:

pip install "vllm>=0.9.0"

🤗 transformers

Refer to the snippet below to run H1 models using 🤗 transformers:

import torch
from transformers import AutoModelForCausalLM, AutoTokenizer

model_id = "tiiuae/Falcon-H1-1B-Base"

model = AutoModelForCausalLM.from_pretrained(
  model_id,
  torch_dtype=torch.bfloat16,
  device_map="auto"
)

# Perform text generation

vLLM

For vLLM, simply start a server by executing the command below:

# pip install vllm>=0.9.0
vllm serve tiiuae/Falcon-H1-1B-Instruct --tensor-parallel-size 2 --data-parallel-size 1

llama.cpp

You can find all GGUF files compatible with llama.cpp under our official collection

Evaluation

Falcon-H1 series perform very well on a variety of tasks, including reasoning tasks.

TasksFalcon-H1-1.5B-deepQwen3-1.7BQwen2.5-1.5BGemma3-1BLlama3.2-1BFalcon3-1B
General
BBH54.4335.1842.4135.8633.2134.47
ARC-C43.8634.8140.5334.1334.6443.09
TruthfulQA50.4849.3947.0542.1742.0842.31
HellaSwag65.5449.2762.2342.2455.358.53
MMLU66.1157.0459.7640.8745.9346.1
Math
GSM8k82.3469.8357.4742.3844.2844.05
MATH-50077.873.048.445.413.219.8
AMC-2356.5646.0924.0619.227.196.87
AIME-2414.3712.52.290.421.460.41
AIME-2511.048.121.251.250.00.21
Science
GPQA33.2227.6826.2628.1926.5926.76
GPQA_Diamond40.5733.3325.5921.5525.0831.31
MMLU-Pro41.8923.5428.3514.4616.218.49
MMLU-stem67.354.354.0435.3939.1639.64
Code
HumanEval73.7867.6856.140.8534.1522.56
HumanEval+68.960.9650.6137.229.8820.73
MBPP68.2558.7364.8157.6733.620.63
MBPP+56.6149.7456.0850.029.3717.2
LiveCodeBench23.8714.8712.525.092.350.78
CRUXEval52.3218.8834.7612.70.0615.58
Instruction Following
IFEval83.570.7745.3361.4855.3454.26
Alpaca-Eval27.1221.899.5417.879.386.98
MTBench8.537.617.17.036.376.03
LiveBench36.8340.7321.6518.7914.9714.1

You can check more in detail on our our release blogpost, detailed benchmarks.

Useful links

Citation

If the Falcon-H1 family of models were helpful to your work, feel free to give us a cite.

@article{falconh1,
    title={Falcon-H1: A Family of Hybrid-Head Language Models Redefining Efficiency and Performance},
    author={Jingwei Zuo and Maksim Velikanov and Ilyas Chahed and Younes Belkada and Dhia Eddine Rhayem and Guillaume Kunsch and Hakim Hacid and Hamza Yous and Brahim Farhat and Ibrahim Khadraoui and Mugariya Farooq and Giulia Campesan and Ruxandra Cojocaru and Yasser Djilali and Shi Hu and Iheb Chaabane and Puneesh Khanna and Mohamed El Amine Seddik and Ngoc Dung Huynh and Phuc Le Khac and Leen AlQadi and Billel Mokeddem and Mohamed Chami and Abdalgader Abubaker and Mikhail Lubinets and Kacper Piskorski and Slim Frikha},
    journal = {arXiv preprint arXiv:2507.22448},
    year={2025}
}

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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