Built this for with Claude Opus 5, using only JavaScript.
Opus 5.2 is COMING in the next TWO WEEKS
The model is already being tested as Opus 5 in Claude Code a model that is not lazy at all and loves details features a good conversational style and high speed a cheaper Fable 5/5.1
A dev team paying $20,000/month for frontier API access just realized their prompts are secretly getting routed to a cheaper model.
Side-by-side generation tests reveal anthropic may be stealth-routing opus 5 traffic to opus 5.2. re-testing identical rocket scene prompts shows
Anthropic cut roughly 80% of Claude Code's own system prompt when Opus 5 shipped.
Eighty percent. Deleted. By the people who wrote it. Every instruction you have ever added to a config file was written to compensate for a model that no longer exists. Most people never take any
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