AI Model Pricing in 2026: GPT-5.6, Grok 4.5, Muse Spark, and Claude Fable 5 Compared
A 2026 pricing comparison of GPT-5.6 Sol, Grok 4.5, Meta Muse Spark 1.1, and Claude Fable 5 shows that GPT-5.6 Sol costs $1.80 per million input tokens and $7.20 per million output tokens in standard mode, with extended …