Google
MLX Community

Gemma 4 31B IT benchmark on an Apple's logo.M5 Pro · 48 GB

<- Runs

Prompt tokens

40,960

Generation tokens

10,240

Trials passed

10/10

Verified

12.9 tok/s

351.7 tok/s

Peak memory

23.00/48 GB

Runs poorly

Trials

Decode / Prefill Speeds

Metadata

metadata.json
{
"runId": "run_4fdf47d7-fda4-4859-9eb2-d00020da9741",
"bundleId": "mlx-gemma-4-31b-it-4bit-8fbcf0",
"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": "Gemma 4 31B IT",
"format": "mlx",
"quant": "4bit",
"architecture": "gemma4",
"source": "mlx-community/gemma-4-31b-it-4bit",
"fileSizeBytes": 18412016832,
"lab": {
"name": "Google",
"slug": "google"
},
"quantizedBy": {
"name": "MLX Community",
"slug": "mlx-community"
}
},
"device": {
"cpu": "Apple M5 Pro",
"cpuCores": 18,
"gpu": "Apple M5 Pro",
"gpuCores": 20,
"gpuCount": 1,
"ramGb": 48,
"osName": "macOS",
"osVersion": "26.4.1"
},
"decodeTpsMean": 12.9,
"prefillTpsMean": 351.7,
"ttftP50Ms": 11742.08,
"idleTpsMean": 5385,
"peakRssMb": 23552,
"trialsPassed": 10,
"trialsTotal": 10,
"runnabilityScore": 0.3760261904761904,
"bundleSha256": "e6f0be73a1e5938b6acc9807c98a57fbf801973149a0eab29d04f01838a0a0f4",
"createdAt": "2026-04-13T11:23:00.551Z"
}