Meta
MLX Community

Llama 3.1 8B Instruct benchmark on an Apple's logo.M3 Ultra · 256 GB

<- Runs

Prompt tokens

40,960

Generation tokens

10,240

Trials passed

10/10

Verified

108.2 tok/s

1,226.9 tok/s

Peak memory

7.01/256 GB

Runs great

Trials

Decode / Prefill Speeds

Metadata

metadata.json
{
"runId": "run_f5f019bd-b155-49ac-a713-5938414809c4",
"bundleId": "mlx-meta-llama-3.1-8b-instruct-4bit-d115d4",
"status": "verified",
"promptTokens": 40960,
"completionTokens": 10240,
"contextLength": 5120,
"harness": {
"version": "0.1.18",
"gitSha": "unknown"
},
"runtime": {
"name": "mlx_lm",
"version": "0.31.1",
"buildFlags": null
},
"model": {
"displayName": "Llama 3.1 8B Instruct",
"format": "mlx",
"quant": "4bit",
"architecture": "llama",
"source": "mlx-community/Meta-Llama-3.1-8B-Instruct-4bit",
"fileSizeBytes": 4517488999,
"lab": {
"name": "Meta",
"slug": "meta"
},
"quantizedBy": {
"name": "MLX Community",
"slug": "mlx-community"
}
},
"device": {
"cpu": "Apple M3 Ultra",
"cpuCores": 28,
"gpu": "Apple M3 Ultra",
"gpuCores": 60,
"gpuCount": 1,
"ramGb": 256,
"osName": "macOS",
"osVersion": "26.4"
},
"decodeTpsMean": 108.2,
"prefillTpsMean": 1226.9,
"ttftP50Ms": 3338.59,
"idleTpsMean": 2626,
"peakRssMb": 7182,
"trialsPassed": 10,
"trialsTotal": 10,
"runnabilityScore": 0.8996033618164063,
"bundleSha256": "baea3119f1bb16a38b53361836fd5fc35074edfa87817ab89f54ed7141f6593f",
"createdAt": "2026-04-05T00:11:44.592Z"
}