SAVRN Model Hub · Comparisons
chronos-bolt-small vs chronos-t5-small
Chronos-bolt-small has 48M parameters and chronos-t5-small has 46M parameters; both are released under Apache License 2.0; at 16-bit, chronos-bolt-small needs about 0.1 GB (1x MI300X from $1.85 an hour) and chronos-t5-small about 0.1 GB (1x MI300X from $1.85 an hour).
| Field | chronos-bolt-small amazon/chronos-bolt-small | chronos-t5-small amazon/chronos-t5-small |
|---|---|---|
| Publisher | Amazon | Amazon |
| Task | Time series forecasting | Time series forecasting |
| Modality | Time series | Time series |
| Parameters, as reported | 48M parameters | 46M parameters |
| Architecture | ChronosBoltModelForForecasting | T5ForConditionalGeneration |
| Library | chronos-forecasting | chronos-forecasting |
| Context length | Not stated | Not stated |
| Repository size | 190.9 MB | 184.9 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 | 772f3d25d38a | a971ba21945c |
| Downloads reported by the hub | 8.2M | 929.5k |
| Last observed | 2026-09-18 | 2026-09-18 |
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-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's Notes on chronos-t5-small
Amazon's own notes point past this model. Chronos-t5-small is the original Chronos, 46M parameters on a T5 architecture, and the publisher says the Chronos-Bolt line released November 27, 2024 runs with 5% lower error, up to 250 times faster and 20 times more memory-efficient at the same size. The original forecasts time series by turning the values into tokens, with a vocabulary of 4,096. Memory is 0.1 GB at 16-bit, and the cheapest host we list, one MI300X at $1.85 an hour, is oversized for it many times over. We would run it wherever a load-forecast service already lives.
Under Apache 2.0 a commercial deployment and modifications are fine, with notices kept. Check two things: no context length is recorded, so confirm the history window in the chronos-forecasting library before sizing inputs, and read the Chronos paper, arXiv:2403.07815, against Bolt before choosing.
Questions
Which is larger, chronos-bolt-small or chronos-t5-small?
chronos-bolt-small (48M parameters) is larger than chronos-t5-small (46M parameters), by the parameter counts their publishers report.
Which is cheaper to run, chronos-bolt-small or chronos-t5-small?
At 4-bit, chronos-bolt-small fits on 1x MI300X from $1.85 an hour and chronos-t5-small on 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.
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.
Can I use chronos-t5-small commercially?
Yes. chronos-t5-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.