# vLLM v0.29 makes Model Runner V2 the default and starts retiring V1

> OnPrem World · https://onpremworld.com/en/news/2026-09-vllm-v0-29-model-runner-v2-default · CC BY 4.0

Published: 2026-09-09 · Runtimes & apps

vLLM v0.29.0 switched every model to Model Runner V2 by default, completing a rollout that began with pooling models. The project now considers V1 deprecated and aims to remove it in v0.32. The release also deprecates starting the server with `python -m vllm.entrypoints.openai.api_server` in favour of `vllm serve`, removes ten deprecated model architectures, and adds Qwen3.8-Flash-Next with BF16, FP8 and NVFP4 weights.

## Why it matters locally

If your home server still launches vLLM through the old api_server module or depends on a V1-only feature, move to `vllm serve` and test on V2 before v0.32 removes the old runner.

## Source

[vLLM v0.29.0 release notes (GitHub)](https://github.com/vllm-project/vllm/releases/tag/v0.29.0)

## On this site

- Models: [Qwen3.8-Flash-Next](https://onpremworld.com/en/models/qwen3.8-flash-next.md)

[All news](https://onpremworld.com/en/news.md)

Summaries are written by OnPrem World from the official source. We link to the original and never republish it.