# LLM API Latency from US West - Real-time Benchmarks

TL;DR: US West developers see 378-430ms median latency in the current llmping benchmark snapshot. Best provider for US West right now: OpenAI.

US West is strong for teams deployed on west coast clouds. Cross-country hops add measurable latency, but the tail is still suitable for interactive chat.

## Current latency


| Provider | Model | Region | P50 | P95 | P99 | TTFT | Tokens/sec | Samples | Collected at |
|---|---|---|---:|---:|---:|---:|---:|---:|---|
| OpenAI | gpt-4o-mini | US West | 378ms | 936ms | 1518ms | 442ms | 86 | 1440 | 2026-05-12T13:54:00Z |
| Together AI | mixtral-8x7b | US West | 430ms | 1108ms | 1710ms | 511ms | 112 | 1440 | 2026-05-12T13:51:00Z |


## Best provider for US West by use case

| Use case | Winner | Reason |
|---|---|---|
| Real-time chat | OpenAI gpt-4o-mini | Lowest P50 in the US West sample and strong token speed. |
| Batch processing | Together AI mixtral-8x7b | Higher output speed can beat slightly slower TTFT for long jobs. |
| Cost-sensitive routing | OpenAI mini-class models | Lower latency and smaller model cost usually align. |

## How US West developers can reduce latency

- Do not route west coast user traffic through east coast application servers just to call an LLM API.
- Cache system prompts and retrieval snippets near the worker or serverless region that performs the model call.
- Track provider-specific status codes because network latency and rate limiting look similar in aggregate charts.