OpenAI
MLX Community

gpt-oss-20b benchmark on an Apple's logo.M2 Max · 32 GB

<- Runs

Prompt tokens

40,960

Generation tokens

10,240

Trials passed

10/10

Verified

57.8 tok/s

465.8 tok/s

Peak memory

14.00/32 GB

Runs ok

Trials

Decode / Prefill Speeds

Metadata

metadata.json
{
"runId": "run_223ce615-7a8e-4c1d-9374-f389acf12bef",
"bundleId": "mlx-gpt-oss-20b-mxfp4-q8-cc4d9e",
"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-Q8",
"fileSizeBytes": 12076207568,
"lab": {
"name": "OpenAI",
"slug": "openai"
},
"quantizedBy": {
"name": "MLX Community",
"slug": "mlx-community"
}
},
"device": {
"cpu": "Apple M2 Max",
"cpuCores": 12,
"gpu": "Apple M2 Max",
"gpuCores": 30,
"gpuCount": 1,
"ramGb": 32,
"osName": "macOS",
"osVersion": "26.4.1"
},
"decodeTpsMean": 57.8,
"prefillTpsMean": 465.8,
"ttftP50Ms": 8748.01,
"idleTpsMean": 3892,
"peakRssMb": 14336,
"trialsPassed": 10,
"trialsTotal": 10,
"runnabilityScore": 0.5935,
"bundleSha256": "61cc36db80436141056e154a672b50fbde8b53d98172679954958c46fa7179bd",
"createdAt": "2026-05-11T23:27:35.187Z"
}