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docs/configuration/engine_args.md

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+---
+toc_depth: 3
+---
+
+# Engine Arguments
+
+Engine arguments control the behavior of the vLLM engine.
+
+- For [offline inference](../serving/offline_inference.md), they are part of the arguments to [LLM][vllm.LLM] class.
+- For [online serving](../serving/openai_compatible_server.md), they are part of the arguments to `vllm serve`.
+
+The engine argument classes, [EngineArgs][vllm.engine.arg_utils.EngineArgs] and [AsyncEngineArgs][vllm.engine.arg_utils.AsyncEngineArgs], are a combination of the configuration classes defined in [vllm.config][]. Therefore, if you are interested in developer documentation, we recommend looking at these configuration classes as they are the source of truth for types, defaults and docstrings.
+
+--8<-- "docs/cli/json_tip.inc.md"
+
+## `EngineArgs`
+
+--8<-- "docs/argparse/engine_args.md"
+
+## `AsyncEngineArgs`
+
+--8<-- "docs/argparse/async_engine_args.md"