Synthetic Data at Scale

STRUCTURED DATA
ON DEMAND

Generate 10K product reviews, 50K training pairs, or 100K sentiment samples. Define a schema, write a prompt, inject variants — get structured JSONL back.

58+

Variant Lists

6.4M

Wikipedia Topics

1M

Max Batch Size

EVERYTHING YOU NEED

From schema design to batch delivery.

01

Schema Builder

Define your output structure visually. Every row matches your exact format — strings, numbers, arrays, enums.

02

Variant Injection

58+ built-in variant lists plus 6.4M Wikipedia topics. Weighted distributions, subset trimming, custom lists.

03

Smart Prompts

Write templates with {VARIABLES} or describe what you want in plain English. Auto-detected schemas and mappings.

04

Batch Processing

Submit up to 1M requests per batch. Automatic splitting, progress tracking, retry logic.

05

Export Anywhere

Download as JSONL or CSV. Parquet coming soon. Ready for fine-tuning, RAG, or evaluation.

06

Usage Monitoring

Track token usage, costs, and job progress in real time. Confidence scoring on every row.

58+

Built-in Variant Lists

6.4M

Wikipedia Topics

1M

Max Rows Per Batch

2

Export Formats

58+ VARIANT LISTS

Plus 6.4 million English Wikipedia topics. Create your own too.

{TONES}750
{PERSONAS}711
{TOPICS_DOMAINS}694
{TASK_TYPES}685
{EMOTIONS}995
{INDUSTRIES}586
{PROGRAMMING_LANGUAGES}374
{LANGUAGES}876
{WRITING_STYLES}303
{AUDIENCES}358
{TONES}750
{PERSONAS}711
{TOPICS_DOMAINS}694
{TASK_TYPES}685
{EMOTIONS}995
{INDUSTRIES}586
{PROGRAMMING_LANGUAGES}374
{LANGUAGES}876
{WRITING_STYLES}303
{AUDIENCES}358
{PERSONALITY_TRAITS}324
{LITERARY_DEVICES}436
{COGNITIVE_BIASES}254
{LOGICAL_FALLACIES}253
{SPORTS_LIST}438
{FOODS}7,357
{FIRST_NAMES}24,401
{COUNTRIES_CULTURES}284
{CAR_BRANDS}404
{EMOJIS}1,225
{PERSONALITY_TRAITS}324
{LITERARY_DEVICES}436
{COGNITIVE_BIASES}254
{LOGICAL_FALLACIES}253
{SPORTS_LIST}438
{FOODS}7,357
{FIRST_NAMES}24,401
{COUNTRIES_CULTURES}284
{CAR_BRANDS}404
{EMOJIS}1,225
WIKIPEDIA ENGLISH

Every English Wikipedia article title as a variant source

6.4M topics

HOW IT WORKS

Four steps from idea to dataset.

01

DEFINE YOUR SCHEMA

Set the shape of your data. Fields like "prompt", "response", "intent" — whatever you need.

02

WRITE A PROMPT TEMPLATE

Use {VARIABLES} that map to variant lists. Or describe what you want and let Sonset build it.

03

PICK YOUR VARIANTS

Select from 58+ built-in lists, 6.4M Wikipedia topics, or create your own. Weight and trim them.

04

SUBMIT AND DOWNLOAD

Sonset batches everything, polls for completion, and delivers your dataset as JSONL or CSV.

SIMPLE PRICING

Pay per row generated. Buy credits, use them when you need. No subscriptions.

Tier

STANDARD

$0.03/row

Fast, efficient generation for most use cases.

  • Batch processing up to 1M rows
  • All 58+ variant lists
  • Visual schema builder
  • Weighted distributions
  • JSONL, CSV export (Parquet coming soon)
  • Real-time job monitoring
Get Started
Tier

QUALITY

$0.05/row

Higher accuracy for complex schemas and nuanced data.

  • Everything in Standard
  • Newer generation engine
  • Superior structured output adherence
  • Complex multi-field schemas
  • Confidence scoring
  • Priority processing
Get Started
Best quality
Tier

PREMIUM

$0.07/row

Maximum intelligence for the most demanding datasets.

  • Everything in Quality
  • Most capable generation engine
  • 256K context window
  • Highest output fidelity
  • Multimodal-class model
  • Best for nuanced, long-form data
Get Started

READY TO BUILD?

Create your free account and start generating structured datasets.

Sonset — Structured synthetic data, on demand