📢 The o1-pro API is available now and we have increased the context of o1 and o1-pro to 120k, o1-mini to 100k.
You can check all the supported models by this API: https://chat01.ai/v1/models.
API timeout and quota not take effect issue are also be fixed.

We added the support for PWA, you can add our website as an app to your desktop or mobile now.

Exciting Updates!

1. New $10 Starter Plan
Get 30 daily credits every day for just $9.99!
( Reset at 0:00 UTC every day)

2. Tiny Permanent Credits Package
Purchase 200 permanent credits for only $9.99.

3. Reduced Price for O1-Pro
O1-Pro model now costs 20 credits per usage.

Take advantage of these deals and enjoy more flexibility than ever!

[Restored] ChatGPT is down, so we have to disable our service now.

o3-mini and o3-mini-high comes, and tt's opened for all the users!

Updates:
1. Web Search for o3-mini and o3-mini-high models. You can enable the web search by clicking this button, below is an example:
https://chat01.ai/en/chat/01JKE1357AEB4MB7YE5SFH4VGT

2. The input text box can extend automatically now.

3. Fix a bug that python code would not be stored.

4. Display the question with markdown.

Updates today:
1. Deep Research is available for all the paid users now. And reduce the credits to 70 per usage. Only final answer consume credits. ( The deep research connection may lost, just refresh the page to re-connect ).
2. GPT 4.5 is only need 2 credits per usages now.
3. You can filter the chat history by model, would add it to discover page soon.

We are happy to announce that our system finally gets stable. The free daily 2 credits comes back!
In the next week, we would add GPT-4.1 model and research PDF download feature.

For the issue of ChatGPT, o1-pro can not work now, we would disable it temporarily and restore after openai fix it and refund the credits.

You can check the details here:
https://community.openai.com/t/o1-pro-stopped-creating-any-output/1278980

We have restored the o1-pro model on our website and refund the credits if you use o1-pro recently. o1-pro API would be fixed later.

o1-pro API is also restored.

ChatGPT and API is experiencing high error rate, your request to our service may fail. If you see unknown error, try again may have a chance to success.

o3-pro and o3-pro API is available to use now! It can browse the internet and thinking in long time.

https://chat01.ai/en/chat/01JXDZ0RWCCE081F36GDF9G4R4

We have made an improvement to the o3-pro model. Now it can continue the request after refreshing the page or connection lost on the website ( API can not reconnect). After many tests by us, we found that o3 pro is still very unstable and a simple question may still take long time to get the answer. And even never get the answer. Please wait OpenAI to improve it.

Updated:
1. Empty o3-pro/ deep research would not consume credits now. ( Empty response is due to the error in ChatGPT.
2. The API tool chain/thought process would be warped by your API client ( Cherry studio, or openwebui).

Our Cloudflare CDN service is very unstable recently and cause our website can not work. We have paid $250 to upgrade the plan from Pro to Business Plan. It seems no issue now. Not sure if it's the root cause, if you meet the issue again, please report to us. You may need to clean the browser cache to invalide the dirty cache in the browser.

Deep Research can export PDF file now! ( Only available to new researches). And we also fix a bug that research would refund the credits even if the answer is OK.

We found that ChatGPT has reduced the max payload size recently the latest spec is:
o3, o3-pro, o4-mini, o4-mini-high: 48k
gpt-4-1, gpt-4-5, gpt-4o, research: 24k