Synthefy-Nori is a foundation model for tabular data that replaces the train-and-tune workflow: pass your labeled rows as context and get predictions in a single forward pass - no training, tuning, feature engineering, or cross-validation. It achieves the highest mean R2 of any tabular foundation model across 96 public regression datasets and beats tuned gradient boosting (XGBoost/LightGBM) on 9 of 13 TabArena tasks, at just 6M parameters. It deploys as an Amazon SageMaker endpoint that runs entirely within your own AWS account.
Synthefy-Nori is an in-context learning foundation model for tabular regression. Instead of building and tuning a separate model for every dataset, you pass your labeled rows (X_train, y_train) as context and the rows you want scored (X_test) in a single request, and predictions come back in one forward pass. No gradient updates, no hyperparameter search, no validation sweep. The model handles preprocessing, high dimensionality, missing values, and skewed targets on its own, so you can hand it raw rows. When your data drifts, you simply send the new rows as context; there is nothing to retrain.
Across 96 regression datasets from three independent sources (TabArena, TALENT, and OpenML-Reg), Synthefy-Nori achieves the highest mean R2 of any tabular foundation model. With zero tuning it beats tuned gradient-boosting baselines (XGBoost and LightGBM, AutoGluon best-quality) on 9 of 13 TabArena tasks. It delivers this at 6M parameters, roughly a tenth the size of comparable tabular foundation models, and returns predictions for typical small-to-mid tables in about a second on a single GPU.
Synthefy-Nori is delivered as an Amazon SageMaker model package that you deploy and run inside your own AWS account, so your data never leaves your environment. It is permissively licensed (Apache 2.0) for commercial use, and its scikit-learn-style fit/predict interface drops into existing pipelines.
Highlights
Replaces the train-and-tune loop - no training, hyperparameter search, feature engineering, or cross-validation. Pass labeled rows as context and get predictions in one forward pass; when data drifts, just send new rows.
Best-in-class accuracy at 6M parameters - the highest mean R2 of any tabular foundation model across 96 public regression datasets, and beats tuned gradient boosting on 9 of 13 TabArena tasks.
Runs in your account - deploys as an Amazon SageMaker endpoint so your data never leaves your AWS environment, with a simple JSON API: send X_train, y_train, and X_test to get one prediction per row.
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
You pay by host-hour (HostHrs) for running model inference, with charges based on the instance type and mode you select. Batch mode covers offline predictions on grouped inputs, while real-time mode handles live requests. Two instance types run in batch mode: ml.g5.xlarge and ml.g6.xlarge. Three instance types run in real-time mode: ml.g5.xlarge, ml.g5.2xlarge, and ml.g6.xlarge. Each dimension bills independently for the hours that instance stays active. Larger instance sizes and additional processing modes give you separate billing lines, so cost scales with the compute you provision.
Top-of-mind questions for buyers
What does one host-hour (HostHrs) cover for billing?
A host-hour is one hour that a single inference instance stays active in your account. You pay for each hour the instance runs, whether in batch or real-time mode. Larger instance sizes and each mode bill on separate lines, so total cost tracks the hours you keep instances provisioned.
Am I charged while an instance sits idle between prediction requests?
Charges accrue for each hour the instance stays active, not per prediction. A real-time endpoint that idles still bills host-hours while running. The hosted service can scale to zero when idle; the first request afterward triggers a warmup of about 60 to 90 seconds before it returns.
How does batch mode billing differ from real-time mode for the same instance?
Batch mode runs offline predictions on grouped inputs, while real-time mode handles live requests through a running endpoint. Both bill by host-hour on the instance you select. Batch suits scheduled jobs where the instance runs only during processing. Real-time keeps an endpoint active to serve immediate requests.
docs.synthefy.com
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Vendor refund policy
Synthefy-Nori is offered free of charge on AWS Marketplace, so there are no software fees to refund. Buyers pay only their own AWS infrastructure costs (for example, SageMaker instance charges), which are billed directly by AWS and are outside Synthefy's control. For any questions, contact support@synthefy.com.
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An Amazon SageMaker model package is a pre-trained machine learning model ready to use without additional training. Use the model package to create a model on Amazon SageMaker for real-time inference or batch processing. Amazon SageMaker is a fully managed platform for building, training, and deploying machine learning models at scale.
Deploy the model on Amazon SageMaker AI using the following options:
Real-time inference
Deploy the model as an API endpoint for your applications. When you send data to the endpoint, SageMaker processes it and returns results by API response. The endpoint runs continuously until you delete it. You're billed for software and SageMaker infrastructure costs while the endpoint runs. AWS Marketplace models don't support Amazon SageMaker Asynchronous Inference. For more information, see Deploy models for real-time inference .
Batch transform
Deploy the model to process batches of data stored in Amazon Simple Storage Service (Amazon S3). SageMaker runs the job, processes your data, and returns results to Amazon S3. When complete, SageMaker stops the model. You're billed for software and SageMaker infrastructure costs only during the batch job. Duration depends on your model, instance type, and dataset size. AWS Marketplace models don't support Amazon SageMaker Asynchronous Inference. For more information, see Batch transform for inference with Amazon SageMaker AI .
Version release notes
This version serves four peer regression models from one asynchronous SageMaker endpoint:
nori-6m
nori-30m
nori-100m (new in this version)
nori-30m-thinking-medium
Every request selects one model; there is no default. Version 1.1 stays available.
What changes for callers
The endpoint is asynchronous. A request is an object in your S3 bucket passed to InvokeEndpointAsync, so it can carry up to 1 GB and run for up to one hour (AWS limits), instead of version 1.1's 25 MB and eight minutes.
Use synthefy 7.3.0 or later. SynthefyNoriClient with mode="sagemaker" uploads each request to your S3 staging prefix, waits for the result and removes its invocation objects.
Every response carries model_version, a digest of the released model specification that answered.
Additional details
Inputs
Outputs
Usage instructions
Sample notebooks
Inputs
Summary
Synthefy-Nori performs in-context tabular regression. Each request contains labeled context rows and the query rows to predict. No separate training job is required.
Content type: application/json. SynthefyNoriClient sends the same request as application/vnd.synthefy.nori.tensorfile.
Fields:
model: Required string. Selects nori-6m, nori-30m, nori-100m or nori-30m-thinking-medium.
X_train: Required two-dimensional array containing labeled context rows. Shape: [context rows][features]. Feature values must be numbers or null.
y_train: Required one-dimensional array containing one numeric regression target for each X_train row.
X_test: Required two-dimensional array containing the rows to predict. X_test must use the same features and column order as X_train.
task: Optional string. The only supported value is regression, which is also the default.
The request is an object in your S3 bucket passed to InvokeEndpointAsync. The response, written to the endpoint's S3 output path, contains one prediction for each X_test row, preserving row order.
Limitations for input type
AWS accepts an input object of up to 1 GB and processes an invocation for up to one hour; how large a table fits depends on instance memory and the table's shape. Only regression is supported. X_train and X_test must be two-dimensional and have the same number of features. Feature values may be numbers or null. Every y_train value must be a finite number, with one value per X_train row. Categorical features must be encoded before invocation. nori-30m-thinking-medium supports point predictions only.
Support is available by email at support@synthefy.com. We assist with deployment, invocation, and functional questions on a best-effort basis, typically responding within two business days.
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
Fine-tune the Synthefy-Nori tabular regression model on your own CSV table with an Amazon SageMaker training job in your AWS account, then serve the fine-tuned model from an asynchronous SageMaker endpoint under a name you choose. The job starts from a released Nori base (nori-6m or nori-100m), adapts it to your table and reports the validation error of the base and of the fine-tuned model on the same rows, so you can see what fine-tuning bought before you deploy.
https://noranalytosai.cloud
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