OpenAI launches GPT-5.6-Sol, early testers report it rivals or exceeds Anthropic's Fable across multiple domains
X-Risk Daily
Friday 10 July 2026
Transformative AI
On 9 July 2026, OpenAI released GPT-5.6-Sol to general availability, alongside companion models Terra and Luna, marking a significant capability jump that early testers say closes or exceeds the gap with Anthropic's Claude Fable 5, launched 9 June 2026.
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