TimesFM

TimesFM (Time Series Foundation Model) is a pretrained time-series foundation model developed by Google Research for time-series forecasting.

• Paper: A decoder-only foundation model for time-series forecasting, ICML 2024.
• All checkpoints: TimesFM Hugging Face Collection.
• Google Research blog.
• TimesFM in BigQuery: an official Google product.

This open version is not an officially supported Google product.

Fork Notice (tsagentkit)

This repository is a fork of google-research/timesfm, published to PyPI as tsagentkit-timesfm to support the tsagentkit project without a GitHub dependency. The Python import name remains timesfm.

Latest Model Version: TimesFM 2.5

Archived Model Versions:

• 1.0 and 2.0: relevant code archived in the sub directory v1. You can pip install timesfm==1.3.0 to install an older version of this package to load them.

Update - Oct. 29, 2025

Added back the covariate support through XReg for TimesFM 2.5.

Update - Sept. 15, 2025

TimesFM 2.5 is out!

Comparing to TimesFM 2.0, this new 2.5 model:

• uses 200M parameters, down from 500M.
• supports up to 16k context length, up from 2048.
• supports continuous quantile forecast up to 1k horizon via an optional 30M quantile head.
• gets rid of the frequency indicator.
• has a couple of new forecasting flags.

Along with the model upgrade we have also upgraded the inference API. This repo will be under construction over the next few weeks to

1. add support for an upcoming Flax version of the model (faster inference).
2. add back covariate support.
3. populate more docstrings, docs and notebook.

Install

1. Install from PyPI:

   pip install "tsagentkit-timesfm[torch]"
   # Or with flax
   pip install "tsagentkit-timesfm[flax]"
   # Or XReg support
   pip install "tsagentkit-timesfm[xreg]"

2. [Optional] Install your preferred torch / jax backend based on your OS and accelerators (CPU, GPU, TPU or Apple Silicon).:

• Install PyTorch.
• Install Jax for Flax.

From Source (optional)

git clone https://github.com/LeonEthan/timesfm.git
cd timesfm

uv venv
source .venv/bin/activate

uv pip install -e .[torch]
# Or with flax
uv pip install -e .[flax]
# Or XReg support
uv pip install -e .[xreg]

Code Example

import torch
import numpy as np
import timesfm

torch.set_float32_matmul_precision("high")

model = timesfm.TimesFM_2p5_200M_torch.from_pretrained("google/timesfm-2.5-200m-pytorch")

model.compile(
    timesfm.ForecastConfig(
        max_context=1024,
        max_horizon=256,
        normalize_inputs=True,
        use_continuous_quantile_head=True,
        force_flip_invariance=True,
        infer_is_positive=True,
        fix_quantile_crossing=True,
    )
)
point_forecast, quantile_forecast = model.forecast(
    horizon=12,
    inputs=[
        np.linspace(0, 1, 100),
        np.sin(np.linspace(0, 20, 67)),
    ],  # Two dummy inputs
)
point_forecast.shape  # (2, 12)
quantile_forecast.shape  # (2, 12, 10): mean, then 10th to 90th quantiles.