Expired50% confidenceFactTime unknown
ChatGPT was initially built on GPT-3.5 rather than waiting for the completion of GPT-4 alignment before release, and the release decision was partly driven by concerns about competition from Anthropic.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Related Claims
UnverifiedChatGPT has previously experimented with usage caps through measures such as limits on the number of GPT-4 messages.77% similarUnverifiedGPT-3.5 was originally an intermediate version developed by OpenAI for training RLHF reward models, later released as text-davinci-003, and was only retroactively named GPT-3.5 after ChatGPT launched76% similarVerifiedChatGPT's free tier can use the GPT-4o model.73% similarVerifiedGPT-4经历了从GPT-4到GPT-4o再到GPT-4.1的版本迭代72% similar
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