Expired50% confidenceFactExact time
Anthropic's Claude model naming scheme follows the Claude 1/2/3/3.5/4 series with sub-model designations of Haiku, Sonnet, and Opus, and has never featured a 'Fable' designation.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Claude Fable 5是真的吗？揭秘AI套壳服务骗局套路
bilibiliAIGC技术流学院6/11/2026
Related Claims
UnverifiedThe Claude series naming lineage includes: Claude 1, Claude 2, the Claude 3 series (Haiku, Sonnet, Opus), Claude 3.5, Claude 3.7, and subsequent versions; a product line named "Fable" has never existed.83% similarVerifiedAnthropic's Claude offers three model series: Opus, Sonnet, and Haiku.74% similarUnverifiedClaude's model line follows a poetic genre naming convention of 'Haiku/Sonnet/Opus' and has never used 'Fable' as a model name.73% similar
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