Gemini 4 Carbon rolling out to Gemini app for AI Ultra, Argon remains

Key Points:

• Google has launched its Gemini 4 Carbon model in the Gemini app, accessible to AI Ultra subscribers in AI Mode and Antigravity, while retaining the Argon model for AI Pro and higher tiers.
• Carbon is designed for highly complex tasks such as multi-step coding, debugging, and open-ended scientific research, whereas Argon remains suited for most software engineering and knowledge work.
• The Gemini app now categorizes 4 Argon for "Code & analysis" and 4 Carbon for "Most complex work," and has removed the 3.1 Pro model.
• Google Antigravity introduces a new /swarm feature that enables coordinated multi-agent workflows, with Carbon assigned to roles requiring deep reasoning like architectural design and auditing.
• Carbon excels in legal, finance, and enterprise tasks requiring precision in data analysis and artifact generation, and ranks #1 on the new Multimodal Knowledge Agents benchmark, performing complex multimodal workflows efficiently.
• Introductory pricing for Carbon is set at $2 per million input tokens and $10 per million output tokens until November 30, after which prices will double.