# Long-Horizon Reasoning
**Entity class:** AI capability
**Domain:** Artificial intelligence / Reasoning
**Maturity:** Developed
## Definition
Long-horizon reasoning is the ability to maintain goals, state, dependencies, and error correction across extended sequences of inference or action.
## Mechanism and significance
The capability matters when a task cannot be solved by one response and instead requires planning, tool use, verification, recovery, and sustained context.
## Relationships
- **Research dossier:** [[research/ASI and RSI Timeline Research Moonshots|ASI and RSI Timeline Research Moonshots]]
- **Ontology route:** [[ASI and RSI Timeline Ontology#Model Architecture and Compute Economics|Model Architecture and Compute Economics]]
- **Primary fields:** [[Machine Intelligence]] · [[AI Infrastructure]] · [[Compute Race]]
- **Adjacent concepts:** [[Knowledge Embedded in Model Weights]] · [[Terminal-Bench]] · [[Cost-Performance Frontier]] · [[Intelligence per Parameter]]
## Sources and provenance
- [[research/ASI and RSI Timeline Research Moonshots|ASI and RSI Timeline Research Moonshots]] — immediate source for this node's role in the broadcast research map.
## Evidence boundary
The research dossier establishes why this entity or concept belongs in the Moonshots ontology. Time-sensitive organizational, product, policy, and performance claims should be checked against the linked primary source or a current authoritative source before reuse as settled fact.