Eddy, the assistant built into Lofenta, can now run on Claude Fable 5, the most capable model Anthropic has released. It joins Claude Opus, Sonnet, and Haiku in the model menu, and you choose it per chat.
What Fable 5 is
Fable 5 is Anthropic's flagship model, built for the hardest reasoning and for long tasks that run over many steps. A quick question is served well by Haiku or Sonnet. Fable is the model you reach for when the problem is genuinely difficult, when you want it to plan across a whole change, or when getting the answer right matters more than getting it fast.
Why we added it
Eddy already ran on Claude Opus, Sonnet, and Haiku, and those cover most of what people ask day to day. But some questions deserve the strongest model available, and we would rather give you that choice than cap Eddy at a middle tier. Fable is the top gear. It is there for the moments you need it and out of the way the rest of the time.
How to use it
Open Eddy, click the model menu, and pick Fable 5 under Anthropic. Your choice is remembered per chat, so you can keep everyday work on Sonnet and switch to Fable for the heavy lifting. Everything else about Eddy stays the same, including the tools it can run inside your projects.
What it costs
Fable is the top premium tier and it is priced to match. It bills against your AI credit balance at roughly four times the usage of Opus. That reflects what the model costs to run, and it is the reason we keep it as one option among several rather than the default. For most work, Sonnet remains the best balance of quality and cost. Reach for Fable when the task earns it.
AI credits are separate from your plan. You top them up when you want to, and Eddy shows an estimate of what a message will cost before you send it, so there are no surprises.
Availability
Fable 5 is available in Eddy for anyone with AI credits. It is one of four Claude models you can pick from, alongside Opus 4.8, Sonnet 4.6, and Haiku 4.5.