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vLLM vs Sonar: catalog facts
vLLM	Sonar
Free Free and open source under the Apache-2.0 license.	Free Free and open source under the AGPL-3.0 licence.
Linux, Command line	macOS, Linux, Self-hosted, Command line
High-throughput serving suited to production-scale local deployments Apache-2.0 licensed and actively developed	OpenAI-compatible API with streaming, embeddings and tool calls Continuous batching and several forms of parallelism for many concurrent users
Aimed at developers deploying models rather than casual end users Requires appropriate GPU hardware for good performance	Aimed at server deployments rather than casual desktop chat Recently renamed from Aphrodite Engine, so older guides use the old name
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: Apache-2.0	License: AGPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.