Unverified60% confidenceFactExact time
After GPT-3, OpenAI gradually stopped releasing full model weights and provides access only through a paid API.
2
Sources
60%
Confidence
Long-term
Relevance
7/24/2026
First Seen
Sources
How DeepSeek's Open-Source Free Strategy Is Disrupting the AI Industry
bilibili福卡智库7/10/2026
Related Claims
Unverified早期GPT-3 API仅按总Token数统一计费，不区分输入输出，OpenAI在GPT-3.5时代开始分离输入/输出定价81% similarUnverifiedOpenAI's GPT series is completely closed-source and is only billed per token through an API, and Anthropic's Claude is the same.79% similarUnverifiedOpenAI opened up GPT-3.5/4 APIs in 202376% similarVerifiedOpenAI initially restricted GPT-4 to ChatGPT Plus subscribers at the time of its launch.74% similarVerifiedIn 2020, OpenAI released the GPT-3 API.74% similar
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