Verified65% confidenceFactExact time
OpenAI's naming system shifted during the GPT-4 era from decimal version numbers to letter suffixes (such as 4-turbo and 4o) to identify architectural optimizations.
3
Sources
65%
Confidence
Long-term
Relevance
7/23/2026
First Seen
Sources
Related Claims
VerifiedOpenAI's GPT series increments by integer version numbers (GPT-3, GPT-4) and uses letter suffixes to distinguish variants, such as "o" representing the optimized version (GPT-4o) and "mini" representing the lightweight version83% similarUnverifiedOpenAI uses date-snapshot naming (e.g., gpt-4-0613), but the actual version pointed to by generic aliases (e.g., gpt-4) may switch silently79% similarUnverifiedThe 'o' in GPT-4o stands for omni, marking OpenAI's transition from a single-modality text model to a native multimodal architecture.76% similarUnverifiedOpenAI从GPT-3到GPT-4采用整数大版本命名，每次发布意味着架构级别的重大升级75% similarUnverified大语言模型的分层命名策略已成为AI行业的标准产品形态，如OpenAI的GPT-4o mini与GPT-4o、Anthropic的Claude Haiku/Sonnet/Opus75% similar
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