According to the official Google DeepMind blog, Gemini 4 Carbon is now available for preview to developers, enterprises, scientists, and consumers. The API is accessible via Google AI Studio and Gemini for business, and is also rolling out gradually to Google AI Ultra subscribers. The company stated that its entry-level pricing is consistent with Gemini 4 Argon, at $2 per million input tokens and $10 per million output tokens. The `/swarm` multi-agent feature in Antigravity remains in preview. Model capabilities and performance comparisons were disclosed by the company.