SGLang vs 
Aphrodite Engine
SGLang vs Aphrodite Engine compared for 2026 — features, license, ease of use, performance and which one to choose. Fast serving with structured outputs vs High-throughput LLM serving.
Updated regularly · curated by OpenSourceAI.tech
SGLang vs Aphrodite Engine at a glance
| Spec | SGLang | Aphrodite Engine |
|---|---|---|
| Category | Inference server | Inference server |
| Type | Inference server | Inference server |
| License | Apache-2.0 | AGPL-3.0 |
| Runs locally | Self-hosted | Self-hosted |
| Primary language | Python | Python |
| Ease of use | Advanced | Advanced |
| Best for | teams needing structured-output serving | serving many users at high throughput |
| GitHub stars | 30.9k | — |
How SGLang and Aphrodite Engine score
| Criterion | SGLang | Aphrodite Engine |
|---|---|---|
| Popularity | 4.0 | n/a |
| Maintenance | 5.0 | n/a |
| Ease of use | 2.5 | 2.5 |
| Privacy | 4.5 | 4.5 |
| License freedom | 5.0 | 3.5 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
SGLang
SGLang is a fast serving framework for LLMs and vision-language models, featuring RadixAttention and strong support for structured and programmatic generation.
- Very fast with RadixAttention caching
- First-class structured / programmatic generation
- Strong vision-language model support
Aphrodite Engine
Aphrodite Engine is a high-throughput inference server based on vLLM, optimized for serving many users at once with broad quantization and sampling support.
- Very high throughput serving
- Wide quantization support
- Rich sampling options
Key differences
SGLang is inference server, while Aphrodite Engine is inference server. Their licenses differ (Apache-2.0 vs AGPL-3.0), which matters if you ship a commercial product. In short, SGLang fits teams needing structured-output serving, and Aphrodite Engine fits serving many users at high throughput.
Which should you choose?
Choose SGLang for teams needing structured-output serving. Choose Aphrodite Engine for serving many users at high throughput.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is SGLang or Aphrodite Engine easier to use?
Both sit at a similar level (Advanced). Your choice should come down to fit rather than difficulty.
Are SGLang and Aphrodite Engine free?
SGLang is free and open source (Apache-2.0), and Aphrodite Engine is free and open source (AGPL-3.0). Neither charges for the core software.
Can I run SGLang and Aphrodite Engine locally?
SGLang: self-hosted · Aphrodite Engine: self-hosted. Both can be used without sending your data to a third-party cloud where their setup allows.
SGLang vs Aphrodite Engine — which should I pick in 2026?
Choose SGLang for teams needing structured-output serving. Choose Aphrodite Engine for serving many users at high throughput.
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