UsingOpen
Free AI chat with open models, no account or sign-up required
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A free web chat interface for open-weight AI models with no account required, instant access to multiple models, and chat history saved locally on your device.
About UsingOpen
UsingOpen is a free chat front end for open-weight AI models. You pick a model from the catalog, send a prompt, and the reply streams back. The site keeps the API key off your device and shows live availability, context size and price for each model. Chat history is stored in your browser and never sent to UsingOpen's servers. Users get 10 free prompts per day, reset at midnight UTC, with no account, email or card required.
The catalog includes text, coding, reasoning and multimodal models like DeepSeek V4, Qwen3.8, GLM 5.3, Gemma 4, GPT-OSS, Kimi K3 and MiniMax M3. You can compare two models side by side and switch between them instantly. Models that are paused for upstream capacity appear as "Adding capacity" until they return.
- free
- ai-chat
- private
- open models
- streaming
- no signup
Features worth knowing
- Access to 20+ open-weight AI models including DeepSeek, Qwen, GLM, Gemma, GPT-OSS, Kimi K3 and MiniMax M3
- No account required, no sign-up, no email or password needed
- 10 free prompts per day, reset at midnight UTC
- Chat history saved locally on your device, never sent to servers
- Streaming responses with visible reasoning for thinking models
- Compare two models side by side in the same conversation
- Live model availability status and real-time capacity information
- Responsive design, installable as standalone mobile app
Pricing
Pricing model: Free
Free with 10 prompts per day. UsingOpen Studio desktop app is $19 USD one-time purchase, or ¥99 CNY in mainland China.
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UsingOpen metrics
| Metric | Value |
|---|---|
| Domain Rating | 0 no change since last check |
| Trust Flow | 1 no change since last check |
| Citation Flow | 17 no change since last check |
| Referring domains | 5 no change since last check |
| External backlinks | 12 no change since last check |
Ahrefs Domain Rating scanned 10 Nov 2026, updated 8 Nov 2026. Main topic: Regional/Asia (1). Majestic scanned 8 Nov 2026, updated 8 Nov 2026. Link stats via Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
UsingOpen domain facts
Reveal the domain facts
| Domain age | 1 month |
|---|---|
| Registered | |
| Expires | |
| Registrar | NameCheap, Inc. |
| DNSSEC | Not signed |
UsingOpen launch results
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 0 to 0 no change since launch 8 Nov 2026, then 10 Nov 2026 |
| Trust Flow (Majestic) | 1 first measured 8 Nov 2026 |
| Referring domains (Majestic) | 5 first measured 8 Nov 2026 |
Day 2 since launch. Next receipt: day 30, 8 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
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FAQ
- What is UsingOpen?
- UsingOpen is a free chat front end for open-weight AI models. You pick a model from the catalog, send a prompt, and the reply streams back. The site keeps the API key off your device and shows live availability, context size and price for each model.
- Is UsingOpen free?
- Yes. There is no account and no paid tier. Each user gets 10 free prompts per day, reset at midnight UTC, and no card is required. Every live model is included; a model paused for capacity is unavailable until it returns.
- Do I need an account or email address?
- No. UsingOpen does not ask for an email, phone number or password. Chat history is stored in your browser, so there is no account to sign back into.
- Is my chat history private?
- Your history is saved in your browser (IndexedDB) and is never stored on UsingOpen's servers. To generate a reply, the active conversation is sent through the backend to the upstream provider serving the model. Each model shows a retention hint: zero retention where the provider offers it, otherwise assume normal provider logging.
- How is UsingOpen different from ChatGPT?
- UsingOpen is a model picker for open-weight models rather than one assistant. You choose the model per conversation, can compare two side by side, and never create an account. It is narrower by design: no image generation, voice mode or account sync.
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