OpenAIが次世代モデルGPT5.1をテスト中と推測。匿名モデル「Polaris Alpha」がOpenRouterに登場、256Kのコンテキスト容量と128Kの単一出力をサポート。知識ベースは2024年10月まで更新され、API呼び出しが可能（推論モードは未対応）。....
Openai
$2.8
入力トークン/百万
$11.2
出力トークン/百万
1k
コンテキスト長
Alibaba
$1.8
$5.4
16
$14
$56
$0.7
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