OpenAI
LM Studio

gpt-oss-20b benchmark on an Apple's logo.M4 Max · 36 GB

<- Runs

Prompt tokens

40,960

Generation tokens

10,240

Trials passed

10/10

Verified

69.8 tok/s

1,302.4 tok/s

Peak memory

22.00/36 GB

Runs ok

Trials

Decode / Prefill Speeds

Metadata

metadata.json
{
"runId": "run_1e1ca730-8a3d-4948-ab4a-5aa919c8bd44",
"bundleId": "mlx-gpt-oss-20b-mlx-8bit-361274",
"status": "verified",
"promptTokens": 40960,
"completionTokens": 10240,
"contextLength": 5120,
"harness": {
"version": "0.1.20",
"gitSha": "unknown"
},
"runtime": {
"name": "mlx_lm",
"version": "0.31.2",
"buildFlags": null
},
"model": {
"displayName": "gpt-oss-20b",
"format": "mlx",
"quant": "8bit",
"architecture": "gpt_oss",
"source": "lmstudio-community/gpt-oss-20b-MLX-8bit",
"fileSizeBytes": 22228562304,
"lab": {
"name": "OpenAI",
"slug": "openai"
},
"quantizedBy": {
"name": "LM Studio",
"slug": "lmstudio"
}
},
"device": {
"cpu": "Apple M4 Max",
"cpuCores": 14,
"gpu": "Apple M4 Max",
"gpuCores": 32,
"gpuCount": 1,
"ramGb": 36,
"osName": "macOS",
"osVersion": "15.6.1"
},
"decodeTpsMean": 69.8,
"prefillTpsMean": 1302.4,
"ttftP50Ms": 3144.83,
"idleTpsMean": 427,
"peakRssMb": 22528,
"trialsPassed": 10,
"trialsTotal": 10,
"runnabilityScore": 0.6079152380952381,
"bundleSha256": "cc9dcbb51b80512f9060b2c6b01134ac978ca9c6dbf3a4127a504395f0405eac",
"createdAt": "2026-04-11T02:31:47.938Z"
}