Why I Stopped Picking AI Models by Hype and Started Picking by Speed
Why I Stopped Picking AI Models by Hype and Started Picking by Speed Three months ago I almost lost a $14,000 retainer because my chatbot felt sluggish. The client didn't say "your TTFT is too high." They said "it feels dumb." That's freelancer code for "users are bouncing and I'm about to find someone else." I rebuilt that bot in a weekend using a model I'd never even heard of six weeks earlier, dropped average response time from 1.4 seconds to under 300ms, and the client renewed for another six months. That single pivot paid for my rent. So I went down a rabbit hole. I ran the same speed test on every model I could get my hands on through Global API's unified endpoint. Fifteen models. Same prompt. Same regions. Ten iterations each. I'm writing this up because if you're billing by the hour or running a side hustle on a shoestring, speed isn't a vanity metric — it's a profit metric. Let me show you what I found. The Setup (How I Actually Ran the Tests) I'm not a researcher with a rack of GPUs. I'm a guy with a M2 MacBook, a $19/mo Hetzner box, and a stopwatch in the form of Python's time.perf_counter() . Here's how I kept it honest. Date window: All tests run on May 20, 2026 Regions tested: US East (Ohio) and Asia (Singapore) Prompt used: "Explain recursion in 200 words" — boring on purpose, because boring prompts are where most apps actually live Output length: Roughly 150 tokens per run Iterations: 10 runs per model per region, average recorded Streaming: Yes, SSE throughout Endpoint: Global API at https://global-apis.com/v1 I measured two things: TTFT (time to first token — the lag before the user sees anything move) and sustained tokens per second (how fast the words actually arrive after that). Both matter. TTFT is the "is this thing broken?" feeling. Tokens per second is the "is this thing fast?" feeling. Here's the script I used, stripped down to the essentials: import time import requests from statistics import mean API_KEY = " your-global-api-key " BASE_URL