Evaluating New Models with SGLang

This document provides commands for evaluating models’ accuracy and performance. Before open-sourcing new models, we strongly suggest running these commands to verify whether the score matches your internal benchmark results. For cross verification, please submit commands for installation, server launching, and benchmark running with all the scores and hardware requirements when open-sourcing your models. Reference: MiniMax M2

Accuracy

LLMs

SGLang provides built-in scripts to evaluate common benchmarks. MMLU

Command

sgl-eval run mmlu \
  --base-url http://127.0.0.1:30000/v1 \
  --num-examples 1000 \
  --max-tokens 8192

GSM8K

Command

sgl-eval run gsm8k \
  --base-url http://127.0.0.1:30000/v1 \
  --num-examples 200

HellaSwag

Command

python benchmark/hellaswag/bench_sglang.py \
  --host 127.0.0.1 \
  --port 30000 \
  --num-questions 200 \
  --num-shots 20

GPQA

Command

sgl-eval run gpqa \
  --base-url http://127.0.0.1:30000/v1 \
  --num-examples 198 \
  --max-tokens 120000 \
  --n-repeats 8

For reasoning models, add --thinking (DeepSeek-V3 / Kimi-K2 style thinking key) or --chat-template-kwarg enable_thinking=true (Qwen3 / GLM style). You may skip it if the model has forced thinking enabled.

HumanEval

Command

pip install human_eval

python -m sglang.test.run_eval \
  --eval-name humaneval \
  --num-examples 10 \
  --port 30000

VLMs

MMMU

Command

python benchmark/mmmu/bench_sglang.py \
  --port 30000 \
  --concurrency 64

You can set max tokens by passing --extra-request-body '{"max_tokens": 4096}'.

For models capable of processing video, we recommend extending the evaluation to include VideoMME, MVBench, and other relevant benchmarks.

Performance

Performance benchmarks measure Latency (Time To First Token - TTFT) and Throughput (tokens/second).

LLMs

Latency-Sensitive Benchmark This simulates a scenario with low concurrency (e.g., single user) to measure latency.

Command

python -m sglang.bench_serving \
  --backend sglang \
  --host 0.0.0.0 \
  --port 30000 \
  --dataset-name random \
  --num-prompts 10 \
  --max-concurrency 1

Throughput-Sensitive Benchmark This simulates a high-traffic scenario to measure maximum system throughput.

Command

python -m sglang.bench_serving \
  --backend sglang \
  --host 0.0.0.0 \
  --port 30000 \
  --dataset-name random \
  --num-prompts 1000 \
  --max-concurrency 100

Single Batch Performance You can also benchmark the performance of processing a single batch offline.

Command

python -m sglang.bench_one_batch_server \
  --model <model-path> \
  --batch-size 8 \
  --input-len 1024 \
  --output-len 1024

You can run more granular benchmarks:

Low Concurrency: --num-prompts 10 --max-concurrency 1
Medium Concurrency: --num-prompts 80 --max-concurrency 16
High Concurrency: --num-prompts 500 --max-concurrency 100

Reporting Results

For each evaluation, please report:

Metric Score: Accuracy % (LLMs and VLMs); Latency (ms) and Throughput (tok/s) (LLMs only).
Environment settings: GPU type/count, SGLang commit hash.
Launch configuration: Model path, TP size, and any special flags.
Evaluation parameters: Number of shots, examples, max tokens.

Basic Usage

Advanced Features

Supported Models

Developer Guide

References

Accuracy

LLMs

VLMs

Performance

LLMs

Reporting Results

​Accuracy

​LLMs

​VLMs

​Performance

​LLMs

​Reporting Results

Accuracy

LLMs

VLMs

Performance

LLMs

Reporting Results