Opus 5.5 vs GPT-6 Sol: cost per task, not per token

Anthropic cut Claude Opus 5.5 pricing to $4/$20 per million tokens (from $5/$25), with cached reads down 60% to $0.20. Ninety minutes later OpenAI launched GPT-6 Sol and Luna at half the price of their predecessors. Artificial Analysis ranks Opus 5.5 first on intelligence but it burns 260M output tokens versus 77M for Sol — about $6 versus $1 per task.

• Opus 5.5: $4 input / $20 output per 1M tokens, cached reads $0.20
• GPT-6 Sol: $2/$10; Luna: $0.10/$0.50 per 1M tokens
• Opus 5.5 uses 260M tokens on the index vs 77M for Sol
• Cost per task: ~$6 for Opus 5.5 vs ~$1 for GPT-6 Sol