Nyckel

Nyckel

Managed prediction APIs for classification, detection, segmentation, and search, with models that learn from reviewed examples.

Category:AI APIs
freemium
Last Updated 8/28/2026

About Nyckel

Nyckel is a managed machine learning platform for teams that need prediction APIs without operating their own training and serving stack. A team can define a classification, detection, segmentation, or search function, add examples, and call the result through a production REST API. The service evaluates candidate model families, selects and trains a suitable model, hosts it, monitors it, and can improve it as reviewed predictions and corrected samples arrive. The console supports an initial no-code workflow, while developers can integrate functions through the API and retain an audit trail with captured invocations. Pricing is usage based: the Free plan includes 100 monthly invokes, 200 samples, and 5 functions; paid tiers add custom training, private inference, review tooling, automation, higher limits, and lower unit rates. This approach reduces infrastructure work, but teams still need labeled examples, a review process, and a budget for usage that exceeds each plan’s allowance.

Best for

Product teams adding custom prediction APIs without an internal ML serving stack.
Operations teams that need human review queues and prediction auditing.
Developers building image, text, or structured-data decision workflows.

Best use cases

Prototype a production API on the Free plan before committing to a paid tier.

Train custom models from production examples and corrections on Starter.

Run high-volume automated decisions with review and export controls on Business.

Compare before choosing

Free has tight limits but provides a production API and no monthly fee.

Starter adds custom training and private inference at $149 per month.

Business costs $599 per month and trades a higher base price for much larger allowances and lower unit rates.

Features

Custom classification

Train text, image, or structured-data classifiers from labeled examples, then serve predictions through a managed REST API.

Visual detection and segmentation

Build functions that locate or segment objects in images without selecting, deploying, or maintaining the underlying model architecture.

Feedback-driven operations

Capture production invocations, review predictions, add corrections, and let the managed ML engine retrain as the dataset changes.

Pros

  • The $0 Free plan includes a production API, so teams can test integration before paying a monthly fee.
  • Nyckel manages model selection, training, hosting, and monitoring, reducing the ML infrastructure a product team must operate.
  • Captured invocations, prediction review, and feedback-based improvement connect production use with an ongoing correction workflow.

Cons

  • Free usage is limited to 100 invokes, 200 samples, and 5 functions per month, which is restrictive for sustained production traffic.
  • Overage charges apply after included usage, so cost grows with invocation and sample volume.
  • The managed model-selection workflow gives teams less direct control over architecture choice and training configuration.

Pricing Plans

Free

$0per month
  • AI models ready instantly
  • Production API
  • Classification, detection, and segmentation
  • Prediction review
  • Invoke capture for real-world testing
  • 100 invokes per month included
  • Up to 200 samples
  • Up to 5 functions
  • $0.005 per invoke after included usage

Starter

$149per month
  • Everything in Free
  • Custom trained models
  • Improve accuracy with feedback
  • Smart review suggestions
  • Private inference
  • 15,000 invokes per month included
  • Up to 30,000 samples
  • Up to 20 functions
  • $0.005 per invoke
  • $0.0025 per additional sample

Business

$599per month
  • Everything in Starter
  • Decision thresholds and automation
  • Human review queues
  • Multi-model decision pipelines
  • Prediction auditing and export
  • Larger prediction retention
  • 300,000 invokes per month included
  • Up to 600,000 samples
  • Up to 100 functions
  • $0.001 per invoke
  • $0.0005 per additional sample

Enterprise

Contact salescustom
  • Everything in Business
  • Dedicated infrastructure

* Pricing information is for reference only. Please refer to the latest announcement on Nyckel's official website.

FAQ

Nyckel manages model evaluation, selection, training, hosting, monitoring, and continued improvement behind a stable REST API.
Yes. The Free plan costs $0 per month and includes 100 invokes, up to 200 samples, and up to 5 functions each month.
The documented platform supports classification, detection, segmentation, and search workflows across image, text, and structured inputs.

Tool Information

DeveloperNyckel
Release Date7/20/2026
Pricingfreemium