# chronos-2-small vs chronos-bolt-small: Specs, License, GPU Cost
Source: https://savrn.com/models/compare/chronos-2-small-vs-chronos-bolt-small
Markdown alternate of the page above; the site index is https://savrn.com/llms.txt

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| Field | [chronos-2-small](https://savrn.com/models/chronos-2-small) autogluon/chronos-2-small | [chronos-bolt-small](https://savrn.com/models/chronos-bolt-small) amazon/chronos-bolt-small |
| --- | --- | --- |
| Publisher | Autogluon | Amazon |
| Task | Time series forecasting | Time series forecasting |
| Modality | Time series | Time series |
| Parameters, as reported | 28M parameters | 48M parameters |
| Architecture | Chronos2Model | ChronosBoltModelForForecasting |
| Library | chronos-forecasting | chronos-forecasting |
| Context length | Not stated | Not stated |
| Repository size | 111.8 MB | 190.9 MB |
| Artifact formats | safetensors | safetensors |
| License | apache-2.0 | apache-2.0 |
| Access | Open weights, no gate | Open weights, no gate |
| Memory at 16-bit (weights and margin) | 0.1 GB | 0.1 GB |
| Cheapest GPUs at 16-bit, per hour | 1x MI300X, $1.85 | 1x MI300X, $1.85 |
| Memory at 4-bit (weights and margin) | 0 GB | 0 GB |
| Cheapest GPUs at 4-bit, per hour | 1x MI300X, $1.85 | 1x MI300X, $1.85 |
| Revision viewed | ddec01313e50 | 772f3d25d38a |
| Downloads reported by the hub | 2.7M | 6.5M |
| Last observed | 2026-10-25 | 2026-10-25 |

An evaluation row appears only where at least two of these models report the same benchmark with the same stated configuration, metric, unit and setup. Different evaluators stay named in each cell. Values are shown as reported: no unit conversion, no ranking.

## SAVRN's Notes on chronos-2-small

There is one job here, forecasting a numeric series, and it makes the hardware question nearly disappear. With 28M parameters, Chronos-2-small needs 0.1 GB at 16-bit. The cheapest setup on this page is one MI300X with 192 GB at $1.85 an hour, so nobody should rent a card for this model alone. We would place it beside something larger and treat its memory as a rounding error.

Nothing in the license slows a deployment: Apache 2.0 permits commercial use, modification and redistribution, with an express patent grant, and asks that the notices travel with it and significant changes be stated. Two checks. No context length is listed, so settle the history window with the publisher's documentation. And the training relations name autogluon/chronos_datasets and Salesforce/GiftEvalPretrain; if your series overlap with either, your test numbers will flatter it. No evaluations are reported here, so run your own.

SAVRN Research, 2026-09-18

## SAVRN's Notes on chronos-bolt-small

Forty-eight million parameters and 0.1 GB of memory at 16-bit: that is the whole of Amazon's chronos-bolt-small, a T5 encoder-decoder trained on nearly 100 billion time series observations for zero-shot forecasting. The cheapest listed setup, one 192 GB MI300X at $1.85 per hour on-demand, would carry it as a sliver. Nobody rents a card for this alone; put it beside work already filling a GPU, or run many copies.

Apache 2.0 permits commercial use, modification and redistribution, provided the license and copyright notices and any NOTICE file travel with the weights and significant changes are stated; the patent grant matters once it ships in a product. Before committing, ask how long a history it accepts, since the page lists no token context length and the model reads history as patches of observations. The publisher also offers a hosted SageMaker JumpStart endpoint; choose that or your own GPU hour.

SAVRN Research, 2026-09-18

## Questions

### Which is larger, chronos-2-small or chronos-bolt-small?

chronos-bolt-small (48M parameters) is larger than chronos-2-small (28M parameters), by the parameter counts their publishers report.

### Which is cheaper to run, chronos-2-small or chronos-bolt-small?

At 4-bit, chronos-2-small fits on 1x MI300X from $1.85 an hour and chronos-bolt-small on 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

### Can I use chronos-2-small commercially?

Yes. chronos-2-small 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.

### Can I use chronos-bolt-small commercially?

Yes. chronos-bolt-small 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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