Expired60% confidenceFactExact time
GPT-5.6 Sol is explicitly positioned as a model in the same tier as Fable/Mythos.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/14/2026
First Seen
Valid until: 10/12/2026(expired)
Sources
Anthropic多次延长Claude Fable 5访问期，不确定性成最大竞争劣势
Related Claims
VerifiedGPT-5.6 Sol is an all-new flagship model focused on complex reasoning and agentic programming.79% similarUnverifiedModel names such as Opus 5.5 and GPT-6 mentioned in the changelog are placeholders or forward-looking adaptations configured internally by LangChain, not officially released models76% similar
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