JetStream vs vllm

Common questions

What is the difference between JetStream and vllm?

JetStream: Throughput and memory optimized engine for LLM inference on XLA devices. vllm: A high-throughput and memory-efficient inference and serving engine for LLMs. See the comparison table for live GitHub stats and shared categories.

When should I choose JetStream over vllm?

Choose JetStream over vllm when Tags unique to JetStream: gemma, gpu, jax, large-language-models; * You are working with large language models (LLMs) that require efficient inference on hardware supported by XLA, particularly TPUs; Leaner open-issue backlog (26).

When should I choose vllm over JetStream?

Choose vllm over JetStream when Requirements: Min 8 GB RAM; Installation can be done via uv pip install vllm or building from source for development purposes.; Tags unique to vllm: amd, blackwell, cuda, deepseek; When you need a high-throughput and memory-efficient inference engine for large language models, especially if you are working with a variety of hardware configurations including AMD, CUDA, and TPU.

When should I avoid JetStream?

* If your primary compute platform is not an XLA-compatible device such as TPU; JetStream's current focus is on systems that are supported by XLA. * When you need immediate support for GPUs, since GPU functionality is marked as a future potential enhancement.

When should I avoid vllm?

If your project strictly requires a specific competitor's ecosystem or features that are not covered by vLLM, such as specialized model serving capabilities not supported by vLLM. When the project's hardware setup is incompatible with the supported hardware configurations of vLLM, such as certain non-supported GPU models or configurations.

Is JetStream or vllm more popular on GitHub?

vllm has more GitHub stars (92,075 vs 458). Stars measure visibility, not whether either tool fits your constraints.

Are JetStream and vllm open source?

Yes - both are open-source projects on GitHub (JetStream: Apache-2.0, vllm: Apache-2.0).

Where can I find alternatives to JetStream or vllm?

GraphCanon lists graph-backed alternatives at JetStream alternatives and vllm alternatives (JetStream markdown twin, vllm markdown twin), ranked by typed relationship edges rather than popularity votes.

Is there a machine-readable version of this comparison?

Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.

Which is better maintained, JetStream or vllm?

JetStream: Slowing. vllm: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.

Where are the full trust reports for JetStream and vllm?

GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: JetStream trust report; vllm trust report.