Google Research has released TimesFM-3, a 330 million parameter zero-shot foundation model natively pretrained for multivariate time series forecasting…
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TimesFM-3 is the third generation of Google Research's zero-shot forecasting model, and the main change from 2.5 is that it handles multivariate inputs natively instead of being limited to a single series' own history. It supports multiple simultaneous targets, past-only covariates, and past-future covariates (things like holidays or planned promotions where future values are known), all without fine-tuning. Architecturally it's a decoder-only transformer with 20 layers at model dim 1280 and 16 heads, patching 32 contiguous time steps per token, and alternating two attention types per layer: causal attention across time within a series, and full attention across series at a given time step. Forecasts are generated in one forward pass rather than autoregressively — the model appends masked
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