Expired70% confidenceFactExact time
Claude's naming convention follows a 'Claude + major version + product tier' structure, such as Claude 3 Opus, Claude 3.5 Sonnet, and Claude 4 Sonnet
2
Sources
70%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Is Claude Opus 4.8 Real? Risk Analysis of No-VPN AI Platforms
bilibiliAIGC技术流学院6/4/2026
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.80% similarUnverifiedClaude's naming system follows the rule of 'Claude + major version number + product line,' with the product line divided into three tiers: Haiku, Sonnet, and Opus.80% similarUnverifiedThe Claude versions available in Cursor typically include Claude 3.5 Sonnet and Claude 4.78% similarUnverifiedClaude 3.5 Sonnet and the Claude 4 series have performed prominently on authoritative benchmarks such as SWE-bench.78% similarUnverifiedThe Claude version used in the experiment was upgraded from Sonnet 3.5 to Claude 4.76% similar
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