# Decoder-Only Transformer
**Entity class:** AI model class
**Domain:** Artificial intelligence / Model architecture
**Maturity:** Developed
## Definition
A decoder-only transformer predicts successive tokens from prior context and forms the dominant architecture behind many general-purpose language models.
## Mechanism and significance
Its flexibility supports open-ended generation, but bounded classification may consume more latency and compute than a model designed to emit one structured decision.
## 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:** [[Specialist Model]] · [[Encoder-Only Model]] · [[BERT Encoder]] · [[Embedding Model]]
## 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.