Leaderboard/gpt-oss-20b-MXFP4-Q4/M3 Ultra (60-core GPU)/r_3ijun8ltjnb

gpt-oss-20b-MXFP4-Q4 on M3 Ultra (60-core GPU) + 96GB unified

Name: gpt-oss-20b-MXFP4-Q4 on M3 Ultra (60-core GPU) + 96GB unified
Creator: llm-speed
License: https://www.apache.org/licenses/LICENSE-2.0
Keywords: LLM benchmark, tokens per second, gpt-oss-20b-MXFP4-Q4, M3 Ultra (60-core GPU) + 96GB unified, mlx

M3 Ultra (60-core GPU) + 96GB unified

suite suite-v1

cli 0.0.1-dev

signedG8xb3zMu3+…

submitted Apr 28, 2026

https://llm-speed.com/r/r_3ijun8ltjnb

Workload results

Workload	Backend	Model	decode tok/s	prefill tok/s	TTFT	p50	p95
chat-short	mlx@0.31.3	mlx-community/gpt-oss-20b-MXFP4-Q4	152.7tok/s	239.9tok/s	692ms	6.5ms	6.7ms

Embed this run

Drop the badge into a README, blog post, or signature. Each render is a backlink to the signed result.

[![llm-speed: 153 tok/s on M3 Ultra (60-core GPU) (gpt-oss-20b-MXFP4-Q4)](https://llm-speed.com/badge/r_3ijun8ltjnb.svg)](https://llm-speed.com/r/r_3ijun8ltjnb)

Related benchmarks

More gpt-oss-20b-MXFP4-Q4 benchmarks — every backend and rig that has run this model.
More M3 Ultra (60-core GPU) LLM benchmarks — every model measured on this hardware.

Provenance

Run ID: r_3ijun8ltjnb
Fingerprint hash: bbf15132ccbbe7d7
Public key: G8xb3zMu3+pznEici/TiW0gPk5qSNIYIikGCwm1rMdQ=
Received: 2026-04-28 14:24:31