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SwapGPT-6 Astra
OpenAI's new GPT-6 Astra is a major chatbot model for writing and answering questions, offered to developers online.
Release page →Gemini 4 Carbon
Google's most powerful AI model so far, built for cybersecurity work and long, complicated tasks. For now only security teams in a Google programme can use it; others get it later, with no date yet.
Release page →The basics
Released
What it does
Knowledge cutoff
The latest events it learned about
Download
Price and limits, for developers
Input
Per million tokens
Output
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Cached input
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How much it takes in at once
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How they score
Combined test score
Epoch Capabilities Index · Epoch AI
Only GPT-6 Astra is in this ranking.
Chat answers, by people's votes
LMArena text, adjusted for style · LMArena
In blind votes, people pick Gemini 4 Carbon over GPT-6 Astra about 57% of the time.
Building apps, by people's votes
LMArena WebDev · LMArena
Neck and neck: in blind votes, people pick each about as often as the other.
Green marks the better of the two on each row, red the other. Rows where one side isn't listed, or where the gap is too close to call, stay plain.
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Rankings from LMArena and Epoch AI, both CC BY 4.0, updated . Developer prices, context windows and knowledge cutoffs from the labs' own listings on models.dev and from OpenRouter. The app links go to each maker's own app when no source says exactly where the model is available.