Ornith-1.5-397B
Ornith · · 79 days after Ornith-1.0-397B
Partially verified
2 of 3 published values traced to a source3 primary sources, 2 archived
Why this status
Cited to the lab's own announcement and the official model card. Not verified because the release date could not be found in any cited primary source — the value may be correct, but this dataset cannot yet show where it came from.
What these states mean · How records are judged · Has this record changed?
The frontier-scale mixture-of-experts member of Ornith-1.5, which the lab reports as on par with Claude Opus 4.8 on Terminal-Bench 2.1 and DeepSWE.
Details
| Released | August 19, 2026 |
|---|---|
| Company | Ornith |
| Family | Ornith |
| Lineage | after Ornith-1.0-397B |
| Released alongside | Ornith-1.5-35B-A3B · Ornith-1.5-9B |
| Era | Agentic systems |
| Type | Language model · Reasoning model |
| Modalities | Not recorded |
| Capabilities | Coding, Agentic, Reasoning |
| Weights | Open weights |
| Licence | MIT |
| Context window | 262K tokensstated in ornith.ai, huggingface.coOrnith-1.5-397B supports a context window of 262,144 tokens.
|
| Parameters | 397Bstated in ornith.ai, huggingface.coOrnith-1.5-397B has 397,000,000,000 parameters.
|
Current information, elsewhere
This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.
- Current price and providers OpenRouter ↗
- Current benchmark scores Artificial Analysis ↗
- Weights and model card Hugging Face ↗
Sources
Record status: partly verified · confidence 60/100 · 3 of 3 primary
Cited to the lab's own announcement and the official model card. Not verified because the release date could not be found in any cited primary source — the value may be correct, but this dataset cannot yet show where it came from.
- ornith.ai Official announcement archived
- huggingface.co Model card archived
- x.com Official announcement
Primary means published by the organisation that made the model. Verified records require at least one.
Ornith family
- Ornith-1.0-9B June, 2026
- Ornith-1.0-35B June, 2026
- Ornith-1.0-397B June, 2026
- Ornith-1.5-9B August 19, 2026
- Ornith-1.5-35B-A3B August 19, 2026
- Ornith-1.5-397B August 19, 2026
What changed from Ornith-1.0-397B
Compared with the previous release in this series. A field appears only when both records state a value — where one does not, it is listed as uncomparable rather than dropped, because a gap in our research is not a finding about the model.
Not comparable: Context window (not researched on both releases); Capabilities and modalities (not researched on both releases)
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