OpenAI
MLX Community

gpt-oss-20b benchmark on an Apple's logo.M4 Pro · 24 GB

<- Runs

Prompt tokens

40,960

Generation tokens

10,240

Trials passed

10/10

Verified

81.7 tok/s

671.3 tok/s

Peak memory

13.00/24 GB

Runs ok

Trials

Decode / Prefill Speeds

Metadata

metadata.json
{
"runId": "run_9fbfa86b-7902-4bf1-8f3c-58bb0ee0e24b",
"bundleId": "mlx-gpt-oss-20b-mxfp4-q4-3654eb",
"status": "verified",
"promptTokens": 40960,
"completionTokens": 10240,
"contextLength": 5120,
"harness": {
"version": "0.1.21",
"gitSha": "unknown"
},
"runtime": {
"name": "mlx_lm",
"version": "0.31.3",
"buildFlags": null
},
"model": {
"displayName": "gpt-oss-20b",
"format": "mlx",
"quant": "mxfp4",
"architecture": "gpt_oss",
"source": "mlx-community/gpt-oss-20b-MXFP4-Q4",
"fileSizeBytes": 11178569159,
"lab": {
"name": "OpenAI",
"slug": "openai"
},
"quantizedBy": {
"name": "MLX Community",
"slug": "mlx-community"
}
},
"device": {
"cpu": "Apple M4 Pro",
"cpuCores": 12,
"gpu": "Apple M4 Pro",
"gpuCores": 16,
"gpuCount": 1,
"ramGb": 24,
"osName": "macOS",
"osVersion": "26.4.1"
},
"decodeTpsMean": 81.7,
"prefillTpsMean": 671.3,
"ttftP50Ms": 6096.32,
"idleTpsMean": 2441,
"peakRssMb": 13312,
"trialsPassed": 10,
"trialsTotal": 10,
"runnabilityScore": 0.6075371428571429,
"bundleSha256": "f25615c63a914495cb8c13c07b7b3f8135547bceea9032ad914fd255d422669c",
"createdAt": "2026-04-26T22:27:24.122Z"
}