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FlowState r1.1

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ibm-research/granite-timeseries-flowstate-r1.1

~18.5M params | 512 context | $0.5000 input | $1.50 output | Apache-2.0

FlowState r1.1 is IBM's March 31, 2026 refresh of the sampling-rate-invariant FlowState family. Compared with r1 it adds an output-gating mechanism to the S5 state-space encoder, extends the pretraining context from 2048 to 4096 time points, and enlarges the MLP, roughly doubling the parameter count from ~9M to ~18.5M while preserving the functional basis decoder and the sampling-rate-invariance and variable-horizon properties that defined r1. Pretraining also adds CauKer-generated synthetic data on top of the r1 corpus. Hosted alongside r1 so workloads can A/B test before migrating. According to IBM, r1.1 currently leads the GIFT-Eval leaderboard for point-forecasting accuracy by MASE.

Model Classification

Family

FlowState / Granite TimeSeries

Type

time series foundation model

Pretrained time-series model exposed on TSFM.ai for zero-shot or few-shot forecasting workloads.

Training Data

Gift-Eval Pretrain and Chronos pretraining corpus subsets plus CauKer-generated synthetic series added in the r1.1 refresh; IBM states none of the training data overlaps Gift-Eval evaluation splits. r1.1 weights are published on the ibm-research/flowstate repository under the r1.1 revision branch.

Recommended For

  • • Forecasting across inconsistent sampling rates or timescales
  • • One-model deployments spanning multiple temporal cadences

Strengths

  • • Designed to generalize across varying resolutions
  • • Flexible context and horizon behavior at inference time

Limitations

  • • Smaller public ecosystem than the biggest mainstream TSFM families
  • • Less useful if all of your series already live at one fixed cadence

Capabilities

forecastingquantile-forecastingtimescale-invariantzero-shotlong-context

Tags

ibmflowstatetimescale-invariantprobabilisticlong-context

Specifications

Parameters
~18.5M
Architecture
state space encoder with S5 output gating and functional basis decoder
Context length
512
Max output
1,024
Avg latency
n/a
Uptime
n/a
Plan limits
1,000 rpm free · 1,000,000 rpm with billing
Accelerator
NVIDIA GPU
Regions
Virginia, US
License
Apache-2.0

Pricing

Input / 1M tokens
$0.5000
Output / 1M tokens
$1.50

Performance

Average latency
n/a
Availability
n/a
Plan limits
1,000 rpm free · 1,000,000 rpm with billing