Verified75% confidenceFactExact time
OpenAI'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 version
5
Sources
75%
Confidence
Long-term
Relevance
7/12/2026
First Seen
Sources
Beware of AI Fake Marketing: Is the 'GPT-5.6 Release' a Scam?
bilibiliGPT推荐官7/2/2026
Related Claims
UnverifiedOpenAI'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.83% similarVerifiedThe GPT-4 series uses the cl100k_base vocabulary (approximately 100,000 tokens), while the GPT-4o series upgrades to o200k_base (approximately 200,000 tokens).80% similarUnverifiedOpenAI has the GPT-4o and GPT-4o-mini series, Anthropic has launched three tiers—Claude Opus, Sonnet, and Haiku—and Meta's Llama series offers multiple parameter scales including 8B, 70B, and 405B.79% similar
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