Granite-TTM-R3 Model Card

Building on top of TTM-R1 and TTM-R2, we introduce the next generation of TinyTimeMixer under the Granite time-series foundation model family — Granite-TTM-R3. This release incorporates several novel tiny-neural architectural innovations designed to push the limits of accuracy in high-speed forecasting, a critical requirement for real-world production deployments.

Supported Tasks & Capabilities

Granite-TTM-R3 is a family of pretrained models supporting multiple real-world forecasting scenarios:

• Zero-shot forecasting across unseen datasets
• Few-shot adaptation effective with as few as ~1K samples
• Full fine-tuning for domain-specific optimization
• Multivariate time-series forecasting
• Exogenous / control variable integration
• High-throughput batch inference for production systems

Architecture Overview

Granite-TTM adopts a mixture-of-experts paradigm composed of models with varying complexities [1-35M and Lite: 1-18M parameters] — coupled with a lightweight routing mechanism that automatically selects or blends the most suitable expert based on input data characteristics.

This enables adaptive model selection, improving both accuracy and efficiency across diverse time-series scenarios.

The architecture is built on efficient mixer-based designs that avoid expensive self-attention. Instead, Granite-TTM-R3 leverages linear gating-based attention mechanisms to capture temporal dependencies with significantly lower computational overhead.

This combination allows Granite-TTM-R3 to deliver scalable, adaptive, and ultra-fast forecasting performance suitable for real-time and large-scale deployments.

Accuracy & Speed

Granite-TTM-R3 is engineered to achieve a strong balance between state-of-the-art accuracy and extreme inference efficiency, making it well-suited for real-world, high-throughput deployments.

Accuracy on GIFT-Eval

• Maintains top-tier performance on the GIFT-Eval leaderboard.
• Fine-tuned FM:
  • MASE: 0.718 | CRPS: 0.514
  • (Lite) MASE: 0.719 | CRPS: 0.514
• Pre-trained FM:
  • MASE: 0.727 | CRPS: 0.523
  • (Lite) MASE: 0.733 | CRPS: 0.524

Inference Throughput

Granite-TTM-R3 delivers orders-of-magnitude faster inference compared to existing popular SOTA models.

🖥️ GPU Throughput

• Typical SOTA models: ~20–500 samples/sec
• Granite-TTM-R3: ~7,500 samples/sec
• Granite-TTM-R3 Lite: ~18,000 samples/sec

💻 CPU Throughput

• Typical SOTA models: ~1–20 samples/sec
• Granite-TTM-R3: ~180 samples/sec
• Granite-TTM-R3 Lite: ~800 samples/sec

👉 Granite-TTM-R3 models achieves ~15–50× speedup over many existing approaches, without compromising accuracy, setting a new benchmark for fast and reliable time-series forecasting.

What’s New in Granite-TTM-R3

• Trend–Residual Decomposition
  Separately models long-term trends and high-frequency residuals for improved structural learning.

• Three-Stage Pre-Training
  Sequential training of trend, residual, and joint components for better stability and convergence.

• Student-Teacher Pretraining
  Student-teacher based pretraining for stable learning in noisy datasets.

• Enhanced Data Augmentation
  Structured perturbations improve robustness across domains.

• Improved Normalization Strategy
  Stabilizes training across scale shifts and heterogeneous datasets.

• GLU Gating
  Dynamic information flow control within mixer blocks.

• Multi-Resolution Temporal Layer
  Captures dependencies across short-, medium-, and long-term horizons.

• FFT-Based Embeddings
  Incorporates frequency-domain signals to model periodicity and seasonality.

• Register Tokens
  Learnable global tokens to encode sequence-level semantics.

• Multi-Quantile Forecasting Head
  Enables probabilistic forecasting with multiple quantiles.

• Refined Loss Weighting
  Balances trend, residual, and quantile objectives for improved calibration.

⚡ Why Granite-TTM-R3

Granite-TTM-R3 is purpose-built for production-grade time-series systems where:

• Low latency is critical for real-time inference
• High scale is required for millions of forecasts
• Data is heterogeneous and evolving
• Compute constraints exist, including CPU-friendly deployment

It provides a practical combination of compactness, speed, and accuracy, making it suitable for industrial deployment.

Example Recipes and Notebooks

To be released.

Publication

• Granite-TTM-R3 Paper: To be released.
• Base TTM Paper: Tiny Time Mixers (TTMs): Fast Pre-trained Models for Enhanced Zero/Few-Shot Forecasting of Multivariate Time Series

Training Data

• Select Datasets from GiftEvalPretrain and GIFT-Eval Train, using non-leaking historical context.
• Custom synthesized data based on KernelSynth.

Model Card Authors

Vijay Ekambaram, Arindam Jati, Haoxiang Qiu, Takayuki Katsuki, Tomoya Sakai, Priyanshul Govil, Pankaj Dayama

Citation

Please cite the following paper if you intend to use this model or its associated architectures and approaches in your work.

@inproceedings{ekambaram2024tinytimemixersttms,
  title={Tiny Time Mixers (TTMs): Fast Pre-trained Models for Enhanced Zero/Few-Shot Forecasting of Multivariate Time Series},
  author={Vijay Ekambaram and Arindam Jati and Pankaj Dayama and Sumanta Mukherjee and Nam H. Nguyen and Wesley M. Gifford and Chandra Reddy and Jayant Kalagnanam},
  booktitle={Advances in Neural Information Processing Systems (NeurIPS 2024)},
  year={2024},
}