Claude Sonnet 5.5 vs GPT-6.1 Sol (2026): Benchmarks and Real Cost
Claude Sonnet 5.5 and GPT-6.1 Sol launched a day apart at the same $2/$10 price. Sonnet leads AA's Intelligence Index 56 to 52; Sol costs $0.72 per task vs $7.60. Benchmarks, caching, long-context pricing and a worked cost example.
· 13 min read