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<h1>SGLang Documentation</h1>
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<h1>SGLang Documentation<a class="headerlink" href="#sglang-documentation" title="Link to this heading">#</a></h1>
<p>SGLang is a fast serving framework for large language models and vision language models.
It makes your interaction with models faster and more controllable by co-designing the backend runtime and frontend language.
The core features include:</p>
<ul class="simple">
<li><p><strong>Fast Backend Runtime</strong>: Provides efficient serving with RadixAttention for prefix caching, zero-overhead CPU scheduler, continuous batching, token attention (paged attention), speculative decoding, tensor parallelism, chunked prefill, structured outputs, quantization (FP8/INT4/AWQ/GPTQ), and multi-lora batching.</p></li>
<li><p><strong>Flexible Frontend Language</strong>: Offers an intuitive interface for programming LLM applications, including chained generation calls, advanced prompting, control flow, multi-modal inputs, parallelism, and external interactions.</p></li>
<li><p><strong>Extensive Model Support</strong>: Supports a wide range of generative models (Llama, Gemma, Mistral, QWen, DeepSeek, LLaVA, etc.), embedding models (e5-mistral, gte, mcdse) and reward models (Skywork), with easy extensibility for integrating new models.</p></li>
<li><p><strong>Active Community</strong>: SGLang is open-source and backed by an active community with industry adoption.</p></li>
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<li class="toctree-l1"><a class="reference internal" href="start/install.html">Install SGLang</a></li>
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<li class="toctree-l1"><a class="reference internal" href="backend/openai_api_completions.html">OpenAI APIs - Completions</a></li>
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<li class="toctree-l1"><a class="reference internal" href="backend/hyperparameter_tuning.html">Hyperparameter Tuning</a></li>
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<li class="toctree-l1"><a class="reference internal" href="supported_models/generative_models.html">Large Language Models</a></li>
<li class="toctree-l1"><a class="reference internal" href="supported_models/vision_language_models.html">Vision Language Models</a></li>
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<li class="toctree-l1"><a class="reference internal" href="supported_models/support_new_models.html">How to Support New Models</a></li>
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<li class="toctree-l1"><a class="reference internal" href="backend/speculative_decoding.html">Speculative Decoding</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/structured_outputs.html">Structured Outputs</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/function_calling.html">Tool and Function Calling</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/separate_reasoning.html">Reasoning Parser</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/structured_outputs_for_reasoning_models.html">Structured Outputs For Reasoning Models</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/custom_chat_template.html">Custom Chat Template</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/quantization.html">Quantization</a></li>
<li class="toctree-l1"><a class="reference internal" href="backend/lora.html">LoRA Serving</a></li>
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<li class="toctree-l1"><a class="reference internal" href="frontend/frontend.html">SGLang Frontend Language</a></li>
<li class="toctree-l1"><a class="reference internal" href="frontend/choices_methods.html">Choices Methods in SGLang</a></li>
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<li class="toctree-l1"><a class="reference internal" href="router/router.html">Router for Data Parallelism</a></li>
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<p aria-level="2" class="caption" role="heading"><span class="caption-text">References</span></p>
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<li class="toctree-l1"><a class="reference internal" href="references/general.html">General Guidance</a></li>
<li class="toctree-l1"><a class="reference internal" href="references/hardware.html">Hardware Supports</a></li>
<li class="toctree-l1"><a class="reference internal" href="references/advanced_deploy.html">Multi-Node Deployment</a></li>
<li class="toctree-l1"><a class="reference internal" href="references/performance_tuning.html">Performance Tuning</a></li>
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