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Olmo Hybrid

Allen Institute for AIOpen WeightsPending Human Review

Olmo Hybrid is a fully open 7B language model that combines Transformer attention with gated DeltaNet linear recurrent layers. Three quarters of its sequence-mixing layers use gated DeltaNet, reducing long-context state costs while retaining attention in the remaining layers. Ai2 releases base, instruction, and thinking checkpoints alongside data and training artifacts. The model studies scaling and expressivity compared with Olmo 3 under controlled training, and provides a practical platform for hybrid-model experiments. Throughput comparisons depend on sequence length and hardware rather than representing a fixed speedup for every task.

2026-03-05
7B
Hybrid gated DeltaNet linear RNN / Transformer
Apache-2.0

Specifications

Parameters
7B
Architecture
Hybrid gated DeltaNet linear RNN / Transformer
License
Apache-2.0
Context Window
65,536 tokens
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
Olmo
API Access
Not Available
Chat Interface
Not Available
Variants
BaseInstructThink

Capabilities & Limitations

Capabilities
text generationreasoninglong context
Known Limitations
Generated outputs can be incorrectPerformance varies by task and deployment
Notable Use Cases
language-model researchself-hosted assistance

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