Expert Reasoning Traces
- Step-level
- Supervision
- Verified
- Second-expert check
- 200+
- Domains
- Hard
- Problem tier
We typically reply within 24 hours
Step-by-step solutions to hard problems from verified domain experts, with intermediate work, for process supervision and RL post-training.
Worked solutions to genuinely hard problems, authored by identity-verified experts who show their intermediate reasoning, dead ends, and corrections rather than just the final answer. The traces are built for process supervision, where models learn how to get to an answer, not only what it is.
Every trace is collected from paid experts with signed consent, verified for correctness by a second expert, and reviewed for PII before delivery.
Highlights
- Full intermediate reasoning, including false starts and corrections
- Authored by vetted experts on genuinely difficult problems
- Independently verified for correctness by a second expert
- Step-level labels suitable for process reward models
- Consent-cleared and PII-reviewed before delivery
Domain coverage
200+ domains across advanced math, science, engineering, medicine, law, and software. Coverage extends to specific subjects, difficulty tiers, or formats on request.
Capture and format
Delivered as JSONL with the problem, the expert's step-by-step trace, the final answer, and the verifier's outcome. Authoring and verification run through the Terac platform.
Annotations
Step segmentation and final-answer correctness as standard, plus optional per-step quality labels and error tagging on request.
Provenance
- Identity-verified expert contributors, paid on verified completion
- Task-level attestations and reviewer agreement captured per record
- PII reviewed and redacted before delivery
- Per-record audit trail and licensable usage rights
Use cases
- Process-supervised reward models and step-level RL
- Reasoning and chain-of-thought fine-tuning
- Math, science, and code post-training
- Verifier and grader model training
