OpenCSG signup guide for free ¥199 credits (DeepSeek / Qwen / GLM / MiniMax complete bundle)
① Sign up with the invitation code to receive ¥99 directly (clicking the invitation code fills it in automatically): AFF
opencsg。com/signup?invitationCode=49K1ALJOS5
Invitation code: 49K1ALJOS5
A mobile phone number is required to receive an SMS verification code. Usernames must be 2–10 letters or digits.
② After logging in, click your avatar in the upper-right corner to open your profile, then click „Key Management“ on the left.
③ First, open „CSGShip API Key“ and create a key. You’ll receive an additional 100 credits, for a total of ¥199. You can check your balance under „Billing/Top Up“.
④ Then go to „API Keys“ and click „+ Create API key“ in the upper-right corner. This is the key used to call the models.
⑤ Enter the following in any OpenAI-compatible client:
Base URL: opencsg。com/aigateway/v1
API Key: the key you just created
Available models (partial list): qwen3.8-max, qwen3.8-flash, deepseek-v4-pro, deepseek-v4-flash, deepseek-v4.1-flash, glm-5.1, glm-5.2, glm-5.3-flash, minimax-m3, MiniMax-M2.5, qwen3.7-plus, gpt-4.1-mini, and more. There’s also the text-to-image model Qwen/Qwen-Image-2512.
In testing, deepseek-v4.1-flash had a time to first token of about 2.5 seconds and output of around 100 tok/s—stable and usable.
Credits expire and are deducted based on usage, so it’s recommended to sign up and start using them early~