OpenAI was already celebrating victory – and then they received the blow that's driving the internet crazy
Just hours after OpenAI launched its Intelligent UI interface, Anthropic released Claude Haiku 5.5 – the smallest, fastest, and cheapest model in its history. The new model is 75% cheaper than the previous generation and outperforms GPT-6 Luna in programming and computer operation tests. The launch sparked a wave of reactions online, including an enthusiastic response from Elon Musk.
Just hours after OpenAI celebrated the launch of its Intelligent UI interface and GPT-6 Luna model for 1.2 billion users, Anthropic landed a painful counterstrike with the launch of Claude Haiku 5.5. The new model is the smallest, fastest, and cheapest in the company's history, with operating costs cut by about 75% compared to the previous generation. In official performance benchmarks, the model outperforms GPT-6 Luna in office tasks and in the Terminal-Bench 4.0 command-line test with 39.2% versus 16.4%. The advantage is particularly notable in autonomous computer control: in the OSWorld 2.1 test, Haiku 5.5 scored 72.4% compared to just 48.9%. The launch sparked a wave of reactions on X, with viral memes and an enthusiastic response from Elon Musk. Meanwhile, Anthropic announced a 50% reduction in cache memory read costs for the Claude Sonnet 5.5 model and monthly API grants of up to $500 for Max and Team subscribers.