Pyyan / Compare / vLLM vs OpenRouter vs Requesty vs Portkey
vLLM vs OpenRouter vs Requesty vs Portkey
4 of 5Routers & Gateways · verified 13 Aug 2026
| Specification | vLLM | OpenRouter | Requesty | Portkey |
|---|---|---|---|---|
| Summary | High-throughput serving, OpenAI-compatible. | Biggest catalogue, simplest start. | Lowest measured overhead. | Routing plus guardrails and compliance. |
| Added latency | Local | 40–55ms | 8ms P50 | 8–20ms |
| Hosting | Self | Managed | Managed | Both |
| Caching | — | — | — | Semantic |
| Category | Routers & Gateways | Routers & Gateways | Routers & Gateways | Routers & Gateways |
| Official | vLLM ↗ | OpenRouter ↗ | Requesty ↗ | 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.