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GPT-5.6 Sol vs Claude Fable 5 comparison showing OpenAI and Anthropic's frontier AI models with pricing and availability differences in July 2026

Business Jul 4, 2026 • 17 min read

GPT-5.6 Sol vs Claude Fable 5: Frontier AI Compared in 2026

Two frontier AI models. Two very different stories. The GPT-5.6 Sol vs Claude Fable 5 comparison isn’t the frontier benchmark race the AI press wants…