ChatGPT Acceleration and AI Tool Route Selection

AI tools don't distinguish between routes themselves; they only look at two things: where the request comes from, and whether the connection lasts until the task finishes. Split those two apart and you get three categories of requirements: egress region, IP reuse and connection quality.

Egress IP region checks

Most AI tools read the region of a request's egress IP when you open the page, sign in, start a chat or submit a payment, and compare it with the account's region. When the two match, everything flows; when the egress region changes or doesn't match the account region, you'll typically be bounced back to the sign-in page, see a region-restriction notice, or have a payment declined. These checks happen on the tool's side, so all a route can do is provide a stable, well-defined egress.

IP reuse and risk controls

How many accounts share a route's egress IP directly affects how likely you are to trigger risk controls. Public routes and routes that change egress often have high reuse rates, so CAPTCHAs and temporary restrictions are more common; dedicated routes with per-user allocation and a fixed egress keep the IP's usage scope small and the account environment more stable. If the same account recovers as soon as you switch routes, this is usually why.

Long connections and streaming output

Chat tools return answers in chunks, so a single request stays open for a long time. If the route jitters, drops packets or switches egress mid-response, the answer stops halfway and the page keeps spinning. Completion tools fire off small requests continuously while you edit, so they are more sensitive to round-trip latency; image-generation tools need to upload assets and download results, so they demand more upstream bandwidth and stability.

Sign-up and sign-in are where region checks are densest, and most of the problems people run into happen here. The points below follow the order of operations.

• Connect the route first, then open the sign-up page. Switching routes during registration shows the tool two egress points in different regions within a short window, which is the most common trigger for extra checks.
• Keep the egress region, browser language and time zone consistent. When the three contradict each other, extra checks are more likely.
• Pin one route per account. Switching the same account back and forth between routes is treated as abnormal sign-in behaviour.
• Watch for regional differences in features and quotas. The same AI tool doesn't offer identical features and quotas in every region; go by what the account's regional page shows.
• Check the payment step separately. Some tools only accept payment methods from certain regions, and a billing region that doesn't match the egress region may be declined.
• On the service side: VPNPF requires no email address, so a username and password are enough to register; devices are unlimited, so work machines and personal devices can connect separately.

Command line and environment variables

Most command-line tools read the HTTPS_PROXY, HTTP_PROXY and ALL_PROXY environment variables, and it's worth setting both the upper- and lowercase spellings. Point the variables at the address your local client listens on, with the port taken from the client's settings.

export HTTPS_PROXY=http://127.0.0.1:7890
export HTTP_PROXY=http://127.0.0.1:7890
export ALL_PROXY=socks5://127.0.0.1:7891
export NO_PROXY=localhost,127.0.0.1,.internal

NO_PROXY lets local and intranet addresses through; leaving it out makes traffic between local services go through the proxy as well, so check this first when troubleshooting.

Package managers and Git

Package managers such as npm, pip and go read the environment variables above by default; git can be configured separately so that only git goes through the proxy, without affecting other commands.

git config --global http.proxy http://127.0.0.1:7890
git config --global https.proxy http://127.0.0.1:7890

To undo it, use git config --global --unset http.proxy and git config --global --unset https.proxy; the change takes effect immediately in the same terminal session.

IDE plugins

Plugins like Copilot and Cursor usually follow the system proxy. If the browser works but the plugin keeps showing offline, first check whether the plugin has its own proxy settings, then confirm the system proxy switch is on. Completion requests inside the IDE are frequent and small, so route jitter hurts the experience more than bandwidth does; prefer an IEPL dedicated line.

CI and build machines

Put proxy configuration for build machines in environment variables or a secrets manager, never in the repository. CI egress is usually different on every run, which makes risk controls more likely; for jobs that need stable access to AI services, use a route with a fixed egress and keep AI-related steps separate from ordinary build steps so failures are easier to trace.

The symptoms above are grouped by cause. For step-by-step troubleshooting by scenario — can't connect at all, connects but pages won't load, slow speeds, frequent disconnects, subscription updates failing — see the troubleshooting handbook.

• Everyday chat and document work: prefer an IEPL dedicated line with a fixed egress, and don't switch routes between signing in and finishing the chat.
• Image generation and large uploads: choose a relay or IEPL dedicated line and prioritise bandwidth, keeping the route unchanged for the duration of the job.
• API and CI: pin a separate route, kept apart from browsing and web sign-ins.
• Multiple devices: devices are unlimited, so work machines, personal devices and build machines can each connect to different routes.
• Plans and pricing: monthly subscriptions are ¥9.9/month with 60GB, ¥18/month with 250GB and ¥28/month with 500GB; data resets every month on your activation date, and mid-cycle upgrades convert the price difference into extra days. Data packs are ¥158/300GB, ¥358/1000GB and ¥658/3000GB, used until they run out and never expiring.