GPT-6 Astra vs GPT-6.1 Sol vs Gemini 4 Argon vs Claude Fable 5.1: Which Frontier Model Fits Which Job A comparison of four frontier models — GPT-6 Astra, GPT-6.1 Sol, Gemini 4 Argon and Claude Fable 5.1 — finds Astra leading on computer use, Argon leading on legal and finance work, and Sol winning on price for coding agents, according to MarkTechPost. The post frames the choice as a matter of matching each model to the job rather than a single overall winner. Astra leads computer use, Argon leads legal and finance work, and Sol wins on price for coding agents. The post GPT-6 Astra vs GPT-6.1 Sol vs Gemini 4 Argon vs Claude Fable 5.1: Which Frontier Model Fits Which Job appeared first on MarkTechPost.