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Reasoning and evaluation data.
Expert-written reasoning data for training, and private evaluation sets for measuring what your models can actually do.
What we can supply
- Expert chain-of-thought with verified steps
- Competition-level math solutions
- STEM problems with programmatic checkers
- Agentic tool-use trajectories
- Long-context reasoning and retrieval tasks
- Multimodal reasoning tasks
- Private, held-out evaluation sets written by experts
Labels and enrichment
- Verified reasoning steps
- Final-answer checks
- Automated graders
- Difficulty ratings
- Rubrics
- Evidence spans
- Success labels
Formats and delivery
JSONL with problems, solutions, graders, and metadata. Delivered to AWS S3, Google Cloud Storage, Azure, or your own storage, with a datasheet and provenance records.
Common uses
- Reasoning model training
- RL with verifiable rewards
- Agent training
- Benchmarking
- Release gating
Questions
How do you keep evaluation sets uncontaminated?
Held-out sets are written for the purpose and never published, so they stay out of public training data.
Who writes the data?
Domain specialists, matched to the subject and difficulty you need, with every solution checked.
Can evaluation data be exclusive?
Yes. Evaluation sets are often licensed exclusively, so their value as held-out data is preserved.
Own data like this? License it through ModelCore