Frontier Agentic Trajectories.

A dataset of verified, step-by-step reasoning from an agent solving ARC-AGI-3 — joined by problem + step and tied to environment-confirmed outcomes. Built for training and evaluating agentic models. The first datasets are being compiled now.

Why it is rare

Ground-truth-graded agentic data.

Scraped text can teach style. Unverified logs can imitate process. Ground-truth-graded trajectories teach decision quality, because every action is linked to a result the environment itself confirmed.

Verified, not scraped

Outcome records are environment-graded, making the data usable for reward modeling, RL, RLAIF, and evaluation.

Genuinely agentic

Multi-step, tool-using problem-solving on a benchmark built to stress autonomous reasoning — not static chat completion.

Reasoning, not just the answer

The debate layer captures adversarial hypothesis testing and verdict formation before the chosen action.

Schema

Three linked record types.

For every problem the agent works, the dataset captures three layers joined by problem_id + step, so a buyer can follow the chain: situation → reasoning → move → result.

Decision

Moment-to-moment decision signal

Board state, candidate actions, and a learned value estimate for every possible action.

Feed layer
one per step
Outcome

Verified state-transition grade

Ground-truth pass/fail confirmation from the environment. This is the RL-usable layer.

Feed layer
one per grade
Debate

Adversarial reasoning trace

Claim → counterexample → falsification test → verdict → chosen action, tied to the outcome grade.

Feed layer
one per hard step
Early access

The first datasets are being compiled now.

The public sample is intentionally compact and sanitized for review — it shows the schema and the linked record types, not production volume. The dataset is built to compound as the Cognitive OS solves more problems, and early partners can arrange access as it comes online.

JSONLdocumented schemadataset cardsanitized samplesnon-exclusive feed
Linkeddecision, outcome, and debate records joined by problem + step
Verifiedoutcomes graded by the environment
Sanitizedpublic sample redacted for review
Earlyfirst datasets compiling now
Use cases

Built for teams improving reasoning models.

Frontier labs can use the feed for supervised fine-tuning, reinforcement learning, reward modeling, capability evaluation, and failure-mode research.

SFT

Train on structured problem-solving traces rather than generic reasoning prose.

RL / RLAIF

Use verified outcome records as reward and preference signal.

Evaluations

Measure agentic reasoning and self-correction against held-out probes.

Failure analysis

Study where base systems fail and what corrections change the outcome.