YASAKANI Claims 1,220 Tokens/Second on RTX 5090

YASAKANI’s headline number is striking, but it is best treated as an intriguing performance claim until independent developers can reproduce it.

• –The reported speed is far above documented RTX 5090 results from engines such as MegaCapybara and Infernix.
• –Missing details on quantization, context length, draft model, and measurement procedure make direct comparisons difficult.
• –If reproducible, the engine could make high-end local coding agents feel nearly instantaneous on consumer hardware.
• –The result highlights how specialized kernels and speculative decoding can matter as much as raw GPU performance.
• –Developers should wait for source code, downloadable builds, and quality-throughput comparisons before treating 1,220 tokens/second as a production benchmark.