Anthropic Launches Claude Opus 5.5, OpenAI Debuts GPT-6 Sol and Luna

Anthropic has launched Claude Opus 5.5, while OpenAI released GPT-6 Sol and Luna, cutting prices on their most powerful models. Both companies are pushing flagship AI at lower cost.

• Anthropic released Claude Opus 5.5 with stronger cyberattack defenses
• OpenAI debuted GPT-6 Sol and Luna at half the price of the 5.6 series
• Both companies are cutting prices on flagship models