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OpenAI-compatible — swap the base_url and go.
词元之火Token SparkAbout us
Sparking creativity and value in everyone
01 — Model Services
Outside mainland ChinaModel servicesModel Services
One API for frontier models.
Available and billed outside mainland China only.
View model servicesSmart routing
Chosen in real time by latency, uptime and price.
Transparent billing
Tokens and cost logged for every call.
Service assurance
Uptime standards and support are ours to keep.
02 — Data Services
Datasets · Annotation · QA & acceptanceData servicesData Services
We turn non-standard data, together with expert judgement, into structured datasets that can be trained on, evaluated and accepted.
View data servicesDataset building
From sample evaluation to volume delivery; reproducible samples, classes and splits.
Sourcing & rights
Source, licence scope and sensitive content logged per item; samples are separate from training rights.
Annotation schema
Multimodal label schemas and an 840-entry dictionary, extended per task with mutual-exclusion rules.
Quality review
Key fields independently reviewed twice; every delivery includes a quality report and error analysis.
Data assets
Samples to evaluate. Datasets to deliver.
A sample of delivered data; other modalities and industries can be scoped per project.
- mechanical CAD files
- ≈28,000
- annotated audio
- 202.5 h
- structure segments
- 75,371
- label dictionary entries
- 840
CAD
Mechanical 3D CAD
Real parts, moulds and tooling: about 11,000 native NX files (roughly half with CAM programs), about 4,200 native SolidWorks files, about 12,300 STEP files and about 4,300 2D drawings.
- NX 2 – NX 2412
- Full modelling history
- CAM toolpaths
- Drawing–model pairs
- Product–mould pairs
≈28,000
files · 4 formats
Typical tasks
CAD generation and completion, drawing understanding, process planning, model retrieval
Non-exclusive, perpetual, worldwide licence for training, fine-tuning, testing and evaluation. Evaluation samples carry no training rights.
MUSIC
Music understanding
Segment-level annotation of real songs: structure, BPM, time signature, key, rhythm and melody notes, instrumentation, vocals, genre, mood, scene and language. Built from 3,327 annotation tasks, 202.5 hours of audio and 93 annotators.
- Structure segments
- BPM / meter / key
- Instrumentation / vocals
- Genre / mood / scene
- Lyric alignment
- 840-entry dictionary
1,430
reviewed final songs
Typical tasks
Structure analysis, lyric alignment, multi-label classification, audio model evaluation
Final songs passed QA and were de-duplicated per track; annotator identity and submission timestamps are removed on export.
Business partners
ByteDanceQuality & acceptance
Quality is not a promise.It is a report shipped with the data.
Every batch includes a quality report, error analysis and acceptance record. Metrics are calculated per batch; a batch that misses the bar is reworked in full.
Shipped with each batch
- Structured dataset
- Quality report
- Error analysis
- Data card & file manifest
MetricDefinitionReported as
Field completeness
Non-empty fields that pass the enum check / required fields
Per-field statistics
Dual-annotation agreement
Matching independent reviews / reviewed samples
Disagreement list
Interval validity
Intervals without overlap or gaps, covering start to end / all intervals
Automated check log
Dictionary hit rate
Labels resolved by the enum dictionary / all labels
Unresolved label list
First-pass acceptance
Batches accepted on first review / all batches
Batch trend
Error closure
Errors fixed and regression-checked / errors found
Error analysis report
Acceptance flow
- 01
Sample pre-check
- 02
Metric review
- 03
Dispute & arbitration
- 04
Revised delivery
Public benchmark
MUB · Music Understanding Benchmark
500 identity-masked recordings evaluating tempo, key, time signature and structure.
Sample evaluation and training licences are signed separately. Every delivery includes a source manifest, annotation manual and version log.
Business inquiry
Tell us what you need. We will reply by email.
Submissions are stored in our console and followed up by a person. For anything urgent, email works too.