Correct. Opus 4.5 'solved' software engineering. What more do I need? Businesses need uncapped intelligence, and that is a very high bar. Individuals often don't.

If Opus is one-size-fits-all, then why Claude keeps the other series? (rethorical).

Opus and Sonnet are slower than Haiku. For lots of less sophisticated tasks, you benefit from the speed.

All vendors do this. You need smaller models that you can rapid-fire for lots of other reasons than vibe coding.

Personally, I actually use more smaller models than the sophisticated ones. Lots of small automations.

Yes, all the major CLIs (Claude Code, Codex, etc) and many agentic applications use a large model main agent with task delegation to small model sub-agent. For example in CC using Opus4.5 it will delegate an Explore task to a Haiku/Sonnet subagent or multiple subagents.

The agent interfaces are for human interaction. Some tasks can be fully unattended though. For those, I find smaller models more capable due to their speed.

Think beyond interfaces. I'm talking about rapid-firing hundreds of small agents and having zero human interaction with them. The feedback is deterministic (non agentic) and automated too.

> What more do I need?

Much cheaper price and much faster token generation.

At least, that's what I need. I stopped using Anthropic because for their $20 a month offering, I get rate limited constantly, but for Gemini $20/month I've never even once hit a limit.