Claude Sonnet 4.5 vs Ornith-1.0-35B

Pick Ornith-1.0-35B if you want the stronger benchmark profile. Claude Sonnet 4.5 only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.

Ornith-1.0-35B has the cleaner provisional overall profile here, landing at 67 versus 64. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

Ornith-1.0-35B's sharpest advantage is in agentic, where it averages 64.2 against 55.3. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 50% to 64.2%.

Claude Sonnet 4.5 is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Ornith-1.0-35B. That is roughly Infinityx on output cost alone. Ornith-1.0-35B is the reasoning model in the pair, while Claude Sonnet 4.5 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Ornith-1.0-35B gives you the larger context window at 262K, compared with 200K for Claude Sonnet 4.5.