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[Docs] Note that alternative structured output backends are supported #19426

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Jun 10, 2025
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[Docs] Note that alternative structured output backends are supported #19426

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9 changes: 1 addition & 8 deletions docs/usage/v1_guide.md
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Expand Up @@ -54,7 +54,7 @@ This living user guide outlines a few known **important changes and limitations*
| **FP8 KV Cache** | <nobr>🟢 Functional on Hopper devices ([PR #15191](https://github.com/vllm-project/vllm/pull/15191))</nobr>|
| **Spec Decode** | <nobr>🚧 WIP ([PR #13933](https://github.com/vllm-project/vllm/pull/13933))</nobr>|
| **Prompt Logprobs with Prefix Caching** | <nobr>🟡 Planned ([RFC #13414](https://github.com/vllm-project/vllm/issues/13414))</nobr>|
| **Structured Output Alternative Backends** | <nobr>🟡 Planned</nobr> |
| **Structured Output Alternative Backends** | <nobr>🟢 Functional</nobr> |
| **Embedding Models** | <nobr>🚧 WIP ([PR #16188](https://github.com/vllm-project/vllm/pull/16188))</nobr> |
| **Mamba Models** | <nobr>🟡 Planned</nobr> |
| **Encoder-Decoder Models** | <nobr>🟠 Delayed</nobr> |
Expand Down Expand Up @@ -132,13 +132,6 @@ in progress.
- **Multimodal Models**: V1 is almost fully compatible with V0 except that interleaved modality input is not supported yet.
See [here](https://github.com/orgs/vllm-project/projects/8) for the status of upcoming features and optimizations.

#### Features to Be Supported

- **Structured Output Alternative Backends**: Structured output alternative backends (outlines, guidance) support is planned. V1 currently
supports only the `xgrammar:no_fallback` mode, meaning that it will error out if the output schema is unsupported by xgrammar.
Details about the structured outputs can be found
[here](https://docs.vllm.ai/en/latest/features/structured_outputs.html).

#### Models to Be Supported

vLLM V1 currently excludes model architectures with the `SupportsV0Only` protocol,
Expand Down