Ornith-1.5-397B: benchmark scores, price and ranking

Ornith-1.5-397B from ornith-ai ranks #77 of 743 LLMs on the LLMs Tiger aggregate benchmark score (52.2), based on 1 benchmark results captured up to 2026-10-13.

Organisation: ornith-ai
Type: Open-weight / local model
Open weights: Yes
Aggregate rank: #77 of 743 (score 52.2)

Across the 1 benchmark where at least ten models are scored, Ornith-1.5-397B is in the top 10% on 1 and in the top half on 1.

Ornith-1.5-397B benchmark results

Ornith-1.5-397B benchmark scores, ranked against all models measured on each benchmark
Benchmark	Score	Rank	Source	Captured
GPQA Diamond	92.8%	#15 of 275	HuggingFace GPQA Diamond leaderboard	2026-10-13

About Ornith-1.5-397B

Ornith-1.5-397B is an open-weight model that can run on your own hardware from ornith-ai. No API price is listed for it yet. We hold 1 benchmark result for it across 1 area, and 1 is in the top tenth of its board.

Where Ornith-1.5-397B stands

On our aggregate score, Ornith-1.5-397B is #77 of 743 ranked models, in the top quarter. Its score is 52.2; the scale is centred on 50, so it sits 2.2 points above the typical model. That beats 90% of the ranked field. Among the 3 ranked ornith-ai models it is #1. The next one down is Ornith-1.5-35B-A3B at 51.8.

Ornith-1.5-397B, benchmark by benchmark

On GPQA Diamond, Ornith-1.5-397B scores 92.8% and ranks #15 of 275. Only 14 models score higher, led by GPT-6 Astra (max) at 95.8%, which is 3.0 points ahead. It covers expert-level science questions. The board median is 71.7%, so Ornith-1.5-397B is 21.1 points above it. Source: HuggingFace GPQA Diamond leaderboard, captured 2026-10-13.

Reading these numbers

The 1 score on this page comes from 1 source: HuggingFace GPQA Diamond leaderboard (1). No official leaderboard supplied any of them, so treat them as third-party measurements. With 1 results the aggregate rank can move a lot when one new score arrives.