Falcon-TST: A Family of Large-Scale Time Series Foundation Model

A family of large-scale time series foundation models for efficient and accurate time series forecasting.

🚀 Latest News

• [Aug 2026]: 🚀 Released Falcon-2.0, our latest time-series foundation model, together with its technical report and API.

• [Jun 2026]: 🚀 Released Falcon-X, our multivariate time-series foundation model , followed by the launch of its API.

• [Oct 2025]: 🚩 Falcon-1.0 is now available on HuggingFace

Comparison of MASE on the GIFT-Eval benchmark:

🚀 Quick Start

Falcon-2.0

Falcon-2.0 is a univariate encoder-only time series foundation model based on ORBIT (Omni-Range Bootstrap Incremental Training).

Installation

pip install falcon-tst

Code Example

import numpy as np
from falcontst import FalconClient

# Prepare inputs
batch_size = 32
context_length = 512
prediction_length = 96

context = np.random.randn(batch_size, context_length)
input_mask = np.ones_like(context)

client = FalconClient()
result = client.quantile_predict(
    context=context,
    prediction_length=prediction_length,
    model_name="Falcon-2.0",
    input_mask=input_mask  # 1 = observed, 0 = missing
)

print(result)

For detailed API usage, parameters, and output format, see falcon2/README.md.

Falcon-X

Falcon-X is a multivariate time series foundation model designed for heterogeneous variate modeling through a shared latent prototype space and dual-dependency modeling.

Installation

pip install falcon-tst

Code Example

import numpy as np
from falcontst import FalconClient

# Prepare inputs
B, L, H = 32, 512, 96
context = np.random.randn(B, L)
input_mask = np.ones_like(context)

client = FalconClient()
result = client.quantile_predict(
    context=context,
    prediction_length=H,
    model_name="Falcon-X",
    input_mask=input_mask,  # 1 = observed, 0 = missing
    is_multivariate=True,
)

print(result)

For detailed API usage, parameters, and output format, see falconx/README.md.

Falcon-1.0

Falcon-1.0 is a hierarchical mixture-of-experts time series foundation model that integrates patch-wise expert specialization with sample-wise hierarchical routing.

Installation

Install the following dependencies

• Python >= 3.8
• PyTorch >= 2.0.0
• transformers == 4.40.1

Code Example

import torch
from transformers import AutoModel

# Load pre-trained model (when available)
model = AutoModel.from_pretrained(
    'ant-intl/Falcon-TST_Large',
    trust_remote_code=True
)

# Prepare your time series data
batch_size, lookback_length, channels = 1, 2880, 7
time_series = torch.randn(batch_size, lookback_length, channels)

# Load the model and data to the same device
device = torch.cuda.current_device() if torch.cuda.is_available() else 'cpu'
model = model.to(device)
time_series = time_series.to(device)

# Generate forecasts
forecast_length = 96
predictions = model.predict(time_series, forecast_horizon=forecast_length)

print(predictions)

🙏 Acknowledgments

We sincerely thank all researchers and organizations who have contributed to the time series forecasting community. This work builds upon numerous open-source datasets and methodologies from the research community.

Special thanks to: - Megatron-LM (https://github.com/NVIDIA/Megatron-LM) - Chronos (https://github.com/amazon-science/chronos-forecasting) - GIFT-Eval (https://github.com/SalesforceAIResearch/gift-eval)

📚 Citation

If you find this repo useful, please consider citing our papers as follows:

@article{liu2026falconx,
  title={Falcon-X: A Time Series Foundation Model for Heterogeneous Multivariate Modeling},
  author={Liu, Yiding and Hu, Yifan and Xia, Hongjie and Liu, Peiyuan and Chen, Hongzhou and Dai, Xilin and Dong, Zewei and Yang, Jiang-Ming},
  journal={arXiv preprint arXiv:2605.27286},
  year={2026}
}

@article{xia2026falcon2,
  title={Into the ORBIT for Time Series: Training Regimes for Foundation Models},
  author={Xia, Hongjie and Liu, Yiding and Hu, Yifan and Liu, Peiyuan and Dong, Zewei},
  journal={arXiv preprint arXiv:2608.13262},
  year={2026}
}

📄 License

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.