OpenAI and Anthropic Trigger AI Model Price War

What happened: On September 22, Anthropic launched Claude Opus 5.5, offering 20–40% lower pricing and 30% faster outputs than its predecessor. Within an hour, OpenAI released GPT-6 Sol and Luna, slashing API prices by 50% compared to GPT-5.6 Sol, with Sol now priced at $2/$10 per million input/output tokens—half the cost of Claude Opus 5.5. OpenAI’s benchmarks claim substantial performance and safety improvements, though comparisons are to Anthropic’s previous model. Both launches mark a rapid escalation in the competition for enterprise AI customers.

Why it matters: The synchronized releases and aggressive price cuts indicate a new phase in the AI model arms race, with cost and speed now as critical as raw capability. OpenAI’s self-reported benchmarks suggest leadership, but Anthropic’s external safety audits and rapid iteration may narrow the gap. For enterprise and developer users, falling prices and faster models could accelerate adoption, but the sustainability of this price war remains uncertain.

Source: Decrypt