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SwapClaude Opus 5.5
Anthropic's new Claude Opus 5.5 writes text and answers questions, offered to developers and paying users, not free to download.
Release page →Gemini Omni Flash
Google's fast Preview: An early version released for testing. It may change or disappear, and is often limited while it lasts. model in its Omni family, offered to developers building apps that use Gemini.
Release page →The basics
Released
What it does
Knowledge cutoff
The latest events it learned about
Download
Where to use it
Price and limits, for developers
Input
Per million tokens
Output
Per million tokens
Cached input
Per million tokens
Context window
How much it takes in at once
Longest answer
How they score
Combined test score
Epoch Capabilities Index · Epoch AI
Only Claude Opus 5.5 is in this ranking.
Chat answers, by people's votes
LMArena text, adjusted for style · LMArena
Only Claude Opus 5.5 is in this ranking, which lists the most-voted models.
Building apps, by people's votes
LMArena WebDev · LMArena
Only Claude Opus 5.5 is in this ranking, which lists the most-voted models.
Videos, by people's votes
LMArena text-to-video · LMArena
Only Gemini Omni Flash is in this ranking, which lists the most-voted models.
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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