GPT-5.6 SOL MATCHES FABLE 5, COSTS ONE-THIRD LESS

OpenAI's GPT-5.6 Sol achieves near-parity with Anthropic's Claude Fable 5 on benchmark tests while charging significantly lower prices. The model scores 59 points on the Artificial Analysis Intelligence Index, just one point behind Fable 5, at $1.04 per task versus Fable 5's $3-per-task pricing.