Independent browser tool · Last reviewed August 27, 2026 · No advertising on this page.
Use GLM-5.3-Flash from your browser with your own OpenRouter API key. The current model is paid; the model switcher also lists OpenRouter’s available free routes. Check the displayed route and price before sending a request.
Stored only in this browser (localStorage) and sent directly to OpenRouter. This site never receives your key or your messages. Get a free key →
Chat with GLM-5.3-Flash
Bring your own OpenRouter key. Your prompts go straight from your browser to OpenRouter — nothing is stored here.
GLM-5.3-Flash is a paid model — it needs credit on your OpenRouter account. To spend nothing, pick a free model from the selector above. Reasoning is always on, so the first token takes a few seconds either way.
Before you chat
- This is an independent site. It is not affiliated with OpenRouter or any AI lab.
- Your API key is stored only in your browser. Requests go directly to OpenRouter; this site never sees your key or your messages.
- Prompts are processed by the model provider — Z.ai for GLM-5.3-Flash — under OpenRouter's and the provider's terms, and may be retained. Do not enter personal, confidential, or sensitive information.
- Conversations are kept in memory only and disappear when you leave or start a new chat.
Source: the OpenRouter listing for z-ai/glm-5.3-flash, verified August 27, 2026. Promotional pricing is listed through Sept 9, 2026. Pricing →
Try it on something real
Choose a starting prompt, edit it for your task, or write your own.
How it works
- Get an OpenRouter keyCreate an account at openrouter.ai, open Settings → Keys, and create a key. GLM-5.3-Flash is paid, so add credit — or pick one of the free models in the chat instead.
- Paste it onceClick "API key" in the chat above. The key is saved only in your browser's local storage and sent straight to OpenRouter — this site never receives it.
- Chat — and watch it reasonReplies stream in real time. Paste whole files, logs or documents; the full conversation stays inside the 1M-token window.
Before you start
- Use your own OpenRouter key. Never share it by email or paste it into a public message.
- GLM-5.3-Flash is not free. An unfunded key can still use routes marked free in the model switcher, subject to OpenRouter’s current limits.
- Do not enter sensitive material. Avoid personal data, confidential documents, credentials, private code, legally privileged information, or anything you are not permitted to send to a third-party provider.
- Verify important outputs. AI responses can be inaccurate, outdated, insecure, or incomplete.
Privacy: how this chat works
This is a bring-your-own-key client. If you choose to save an OpenRouter API key, it is stored in this browser’s local storage. Requests go directly from your browser to OpenRouter; OxAlpha.chat does not proxy the request and does not receive your key, prompt, or model response as part of that request. The active conversation is kept in browser memory rather than stored on our server.
OpenRouter and the selected model provider process the information needed to answer your request under their own settings and policies. Review OpenRouter’s Privacy Policy, Terms, and the provider information shown for the selected route.
Privacy Policy → · Terms of Use → · Disclaimer → · Contact →
Why this page has no ads
The chat is deliberately separated from the site’s editorial pages so that advertising is not mixed with API-key controls, prompts, private working text, or model responses. If advertising is enabled elsewhere on OxAlpha.chat, this page will remain excluded from ad placements.
Independent service notice: OxAlpha.chat is not affiliated with or endorsed by Z.ai or OpenRouter. Model availability, provider routes, prices, limits, and data practices can change.