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Claude Opus 5 is now available in Hapee

Claude Opus 5 is now available as an engine in Hapee. You choose it per agent, with no migration and no rewriting prompts: the ones you already have keep working, only better.

Hapi robot next to the engine selector with Claude Opus 5 marked as new Claude Opus 5 · selectable in the engine selector

When Anthropic releases a new model, our customers' question arrives the same day: "when do I get it?". This time the answer is today. Opus 5 now appears in the engine selector of your agents.

How to turn it on

On the agent you want: Settings → AI Engine → Claude Opus 5. That's it. There's no migration or reconfiguration, and you can have different agents with different engines depending on what each one does.

What changes in practice

Beyond the announcement, here's what it means for an agent that serves your customers:

Long reasoning
Tasks that require thinking through several steps before answering — quoting based on conditions, checking availability and confirming — with fewer cases where the agent gets lost halfway.
Tool use
Calls workflows, queries the CRM and books appointments with more precision. Fewer situations where it should use a tool and doesn't think of it.
Long conversations
Keeps the thread in long WhatsApp exchanges, which is where the difference between models was most noticeable.
Complex instructions
Follows business rules better when there are several of them with exceptions — pricing by segment, shipping conditions, what it can't promise.
More natural writing
Less template, more brand tone. It's especially noticeable in follow-up messages.

When it makes sense and when it doesn't

A more powerful engine isn't automatically the best choice for everything. Our recommendation, hand on heart:

  • Yes for agents that sell, quote, negotiate or follow processes with rules and exceptions.
  • Yes for long conversations where losing context costs a sale.
  • Not needed for simple, repetitive answers — opening hours, an address, an order status. There a lighter engine answers just as well and faster.

The elegant thing about having it per agent is exactly that: you can put Opus 5 on the sales agent and leave the first-line support agent on a more economical engine.

Our policy on models

We integrate new engines as soon as they become available and leave them selectable, not imposed. Nobody migrates by accident: agents stay on the engine they had until you decide to change it.

Try it this week on your sales agent and compare. The difference shows up in the hard conversations, not the easy ones.

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