Google Unveils Gemini 4 Carbon, Claims It Outperforms OpenAI's GPT-6 Astra

Google on November 10 unveiled Gemini 4 Carbon, a new artificial intelligence model that it said outperforms OpenAI's advanced GPT-6 Astra.

According to AI evaluation firm Artificial Analysis, Carbon scored 60 on a composite intelligence index, ahead of Astra's 57. Anthropic's Claude Fable 5.2, released a day earlier, remained in the lead with a score of 65. Gemini 4 Carbon also topped Astra in the AutomationBench 1.0 test, which measures success rates across 657 real-world workplace tasks in sales, finance and human resources. Carbon posted a 53.9% success rate, compared with Astra's 41.4%.

Google highlighted cost efficiency as a key selling point. Carbon's application programming interface pricing is $4 for input and $20 for output per 1 million tokens, the basic unit of AI computation. That compares with Astra's $10 for input and $50 for output, putting Carbon at about 40% of the cost. Users must subscribe to the Google AI Ultra plan, which starts at $100 a month. In South Korea, the plan is priced at 119,000 won a month.

Kim In-yeop, Silicon Valley correspondent inside@hankyung.com