AI API Pricing Comparison (2026): Grok vs Gemini vs GPT-4o vs Claude
Compare per-token API costs as of October 2026: Grok 4.7 $2/$6, Gemini 3.8 Flash $0.75/$3.75, GPT-4o $2.50/$10, Claude Sonnet 5.5 $2/$10, plus GPT-6 and Claude Fable tiers and subscription plans.