Engine head-to-heads
Editorial

Local AI engine — head to head

Pick two engines and read which one wins on which axes. No marketing pitches, no all-green columns. Operator-grade tradeoffs grounded in the public benchmark corpus and real deployment experience.

For a single-table view of all 10 engines on 13 dimensions, see the local AI engine choice matrix.

vLLM vs SGLang

vLLM vs SGLang for production LLM serving: continuous batching, structured output, multi-GPU, hardware fit, maintenance burden. When to choose each, with operator-grade caveats.

Decision rules:4·Matrix rows:10

vLLM vs llama.cpp

vLLM vs llama.cpp: when to use each. Production serving vs cross-platform portability. Hardware fit, OS support, multi-user serving, maintenance reality.

Decision rules:4·Matrix rows:9

Ollama vs llama.cpp

Ollama vs llama.cpp: when the wrapper helps and when it gets in the way. Reproducibility, custom builds, kernel control, multi-GPU, agent workflows.

Decision rules:4·Matrix rows:8

Ollama vs LM Studio

Ollama vs LM Studio: which local AI app fits which operator. CLI vs GUI, headless serving, model library, integrations, reproducibility.

Decision rules:4·Matrix rows:8

MLX vs llama.cpp

MLX vs llama.cpp on Apple Silicon: native framework vs portable runtime. Quality, speed, model coverage, lock-in, ecosystem.

Decision rules:4·Matrix rows:8

TensorRT-LLM vs vLLM

TensorRT-LLM vs vLLM: when NVIDIA's optimized engine is worth the build complexity. Speed, hardware support, multi-GPU, ops realism.

Decision rules:4·Matrix rows:8

Open WebUI vs AnythingLLM

Open WebUI vs AnythingLLM: which self-hosted local AI frontend fits which operator. RAG, agents, multi-tenancy, integrations, deployment shape.

Decision rules:4·Matrix rows:8

ExLlamaV2 vs vLLM

ExLlamaV2 vs vLLM: single-user speed king vs production serving runtime. EXL2 quants, single-GPU, multi-user, agent loops.

Decision rules:4·Matrix rows:8

SGLang vs llama.cpp

SGLang vs llama.cpp: structured-output serving runtime vs cross-platform portable engine. Concurrency, OS coverage, agent workloads, ops realism.

Decision rules:4·Matrix rows:9

LM Studio vs Open WebUI

LM Studio vs Open WebUI: desktop chat app vs self-hosted browser UI. Headless deployment, multi-user, RAG, model browser, integration realism.

Decision rules:4·Matrix rows:9

AnythingLLM vs Open WebUI

AnythingLLM vs Open WebUI: RAG-first batteries-included platform vs polished chat frontend. Document workspaces, agents, multi-tenancy, deployment shape.

Decision rules:4·Matrix rows:9

TensorRT-LLM vs SGLang

TensorRT-LLM vs SGLang: NVIDIA's max-throughput engine vs CUDA-first structured-output runtime. Build complexity, agent workloads, day-zero coverage.

Decision rules:4·Matrix rows:9

MLX vs Ollama

MLX vs Ollama on Apple Silicon: native Apple framework vs cross-platform daemon. Quality at low quants, ecosystem, OS lock-in, model management.

Decision rules:4·Matrix rows:9

ExLlamaV2 vs llama.cpp

ExLlamaV2 vs llama.cpp: NVIDIA-only EXL2 quant specialist vs cross-platform portable runtime. Single-stream tok/s, OS coverage, quant quality, lock-in.

Decision rules:4·Matrix rows:9