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Open-weight model · Time series forecasting

chronos-bolt-mini

by Autogluon autogluon/chronos-bolt-mini

Update Feb 14, 2025: Chronos-Bolt models are now available on Amazon SageMaker JumpStart! Check out the tutorial notebook to learn how to deploy Chronos endpoints for production use in a few lines of code.

Parameters21M
Context
Weights85.0 MB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads661k

Runs On

What it takes to serve chronos-bolt-mini (21M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 0.0 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.0 GB 0.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.0 GB 0.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

SAVRN's Notes on chronos-bolt-mini

The whole download is 85 MB, and the 16-bit run needs 0.1 GB of memory, about the smallest figure on our board. So the hardware question for chronos-bolt-mini is not which GPU but whether a dedicated one makes sense at all. The cheapest setup we track is one 192 GB MI300X at $1.85 per hour on demand, and a 21M-parameter forecaster is a rounding error there, so we would run it beside whatever is already on the card. It earns its keep on zero-shot forecasting, feeder load or cooling draw, from nearly 100 billion training observations.

Apache 2.0 permits commercial use, modification and redistribution, asks you to keep the license and NOTICE files and state significant changes, and carries an express patent grant. Our file lists no context length, so test how much history it accepts. No Index host prices it by the token.

Model Card

By Autogluon, published under apache-2.0, revision 6ccbef2ec98f.

Update Feb 14, 2025: Chronos-Bolt models are now available on Amazon SageMaker JumpStart! Check out the tutorial notebook to learn how to deploy Chronos endpoints for production use in a few lines of code.

Chronos-Bolt is a family of pretrained time series forecasting models which can be used for zero-shot forecasting. It is based on the T5 encoder-decoder architecture and has been trained on nearly 100 billion time series observations. It chunks the historical time series context into patches of multiple observations, which are then input into the encoder. The decoder then uses these representations to directly generate quantile forecasts across multiple future steps—a method known as direct multi-step forecasting. Chronos-Bolt models are more accurate, up to 250 times faster and 20 times more memory-efficient than the original Chronos models of the same size.

Performance

Read the full model card (636 words)

Configuration

Architecture
ChronosBoltModelForForecasting
Vocabulary size
2
Stored precision
float32
Model type
t5

Identity and Version

Repository
autogluon/chronos-bolt-mini
Publisher
Autogluon
Task
Time series forecasting
Modality
Time series
Library
Not stated by the source
Parameters
21M parameters
Languages
Not stated by the source
Revision
6ccbef2ec98f9a35a574760a73d0020bf82af486
First published
2024-11-13
Last updated
2025-10-30

Files and Weights

4 files, 85.0 MB in total. The weights are 1 file totalling 85.0 MB in safetensors.

Weights1 file · 85.0 MB
Configuration1 file · 1.1 KB
Documentation1 file · 6.9 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights85.0 MB 1a1a4297f132
config.jsonConfiguration1.1 KB
README.mdDocumentation6.9 KB
.gitattributesRepository1.5 KB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
85.0 MB
Download from Autogluon

Released by Autogluon through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published85.0 MB
16-bit0.0 GB
8-bit0.0 GB
4-bit0.0 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About chronos-bolt-mini

How much GPU memory does chronos-bolt-mini need?

About 0.1 GB at 16-bit and 0 GB at 4-bit: the weights (21M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run chronos-bolt-mini on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use chronos-bolt-mini commercially?

Yes. chronos-bolt-mini is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

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