You see, Claude Opus 5 first refused to write code for a physical simulation of cars and puppets colliding, and then he was convinced and wrote it.
← When I first started with Prompt, he refused under the pretext of policies of violence and physical harm ← I changed the context and told him the topic was purely academic: physics, collision meshes, and vehicle dynamics ← The joint code appeared
Dario amodei leaked a file where one wrapper makes a claude code session 80% cheaper and 3X faster
The same task on the same repo used to cost $12.00 and 40 minutes, after the router it is $2.40 and 13 minutes steps → router → model matched to difficulty three pinned
Watch the progress of frontier models in bringing Ancient Rome to life on Arena, from Q4 2025 to now.
Scores for Claude Sonnet 5.5 by AnthropicAI and GPT-6.1 by OpenAI are coming soon. Real-world tasks from our global community of users power the Arena leaderboards. Head to
新モデル「Sonnet 5.5 」3分でサクッと解説
Sonnet 5とSonnet 5.5との違いや Opus 5.5・Fable 5.1などの上位モデルを、どう使い分けると良いか、などをまとめています。 簡単に要約すると、以下になります。 ・Sonnet 5から、コマンド操作の実務タスクが約7倍。 値段は据え置き ・上位のOpus
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