Pyyan / Compare / vLLM vs OpenRouter vs Portkey
vLLM vs OpenRouter vs Portkey
3 of 5Routers & Gateways · verified 13 Aug 2026
| Specification | vLLM | OpenRouter | Portkey |
|---|---|---|---|
| Summary | High-throughput serving, OpenAI-compatible. | Biggest catalogue, simplest start. | Routing plus guardrails and compliance. |
| Added latency | Local | 40–55ms | 8–20ms |
| Hosting | Self | Managed | Both |
| Caching | — | — | Semantic |
| Category | Routers & Gateways | Routers & Gateways | Routers & Gateways |
| Official | vLLM ↗ | OpenRouter ↗ | Portkey ↗ |
Highlighted rows are where these differ.
OpenRouter
- Consolidated billing across every provider
- 40–55ms overhead — 5× the alternatives
Best for prototyping.
Portkey
- Best caching implementation
- Prompt management and audit trail
Best for regulated teams.