Chronos-Bolt (Base)
onlineamazon/chronos-bolt-base205M params | 512 context | $0.5000 input | $1.50 output
Chronos-Bolt Base is the larger high-accuracy checkpoint in Amazon's Chronos-Bolt family. The official model card positions it as more accurate than the original Chronos-Large while remaining dramatically faster thanks to patch-based direct forecasting. It is the better Chronos choice when you want a stronger quality ceiling without moving to the older autoregressive Chronos-T5 stack.
Model Classification
Family
Chronos-Bolt
Type
time series foundation model
Pretrained time-series model exposed on TSFM.ai for zero-shot or few-shot forecasting workloads.
Resources
Training Data
Nearly 100B time-series observations from large public corpora and synthetic pretraining data, as documented by the official Chronos-Bolt model cards.
Recommended For
- • Fast zero-shot probabilistic forecasting in production APIs
- • Teams replacing classic Chronos-T5 with lower latency inference
Strengths
- • Direct multi-step forecasting avoids autoregressive rollout cost
- • Strong default for quantile forecasts with lightweight serving
Limitations
- • Focused on forecasting rather than broader multi-task time-series work
- • Less natural fit when you need model behavior tuned around rich multivariate covariates
Capabilities
forecastingquantile-forecastingzero-shotlong-horizon
Tags
amazonchronosprobabilisticquality-tier
Specifications
- Parameters
- 205M
- Architecture
- patch-based T5 encoder-decoder with direct multi-step quantile forecasting
- Context length
- 512
- Max output
- 1,024
- Avg latency
- n/a
- Uptime
- n/a
- Rate limit
- n/a
- Accelerator
- NVIDIA GPU
- Regions
- Virginia, US
- License
- n/a
Pricing
- Input / 1M tokens
- $0.5000
- Output / 1M tokens
- $1.50
Performance
- Average latency
- n/a
- Availability
- n/a
- Rate limit
- n/a