We just added two of the most exciting models on the market to Gleap. One is the new frontier ceiling. The other is the best price/performance deal we've seen in a long time. Both are live for Kai today.

Here's the short version: pick Fable 5 when you want the absolute best, pick M3 when you want fast, cheap, and still really good.

Claude Fable 5 — frontier, no compromises

Fable 5 is Anthropic's first publicly available Mythos-class model, and it's the most capable model they've ever shipped to the general public. It's state-of-the-art on basically every benchmark that matters for the work Kai does — software engineering, knowledge work, vision, long-running tasks. The longer and messier the job, the bigger its lead.

In practice this means Kai can take on the gnarly stuff: deep multi-step reasoning, complex tickets that used to need a human, and long autonomous runs without losing the thread.

The catch: it's expensive. Fable 5 is the premium tier and priced like it ($10 / $50 per million tokens at the source). So we'd recommend it for your highest-value workflows where quality wins over cost — not for blasting through thousands of routine tickets. For anything in regulated high-risk territory (security, bio, chemistry), Anthropic automatically falls back to Opus 4.8, so you don't lose coverage there either.

Use it for: your hardest agentic tasks, complex resolutions, anything where "good enough" isn't good enough.

MiniMax M3 — the balance pick

M3 is the one we're most excited about for everyday use. It's an open-weight frontier model with a 1M-token context window, native multimodal input, and genuinely strong coding and agentic performance — it beats GPT-5.5 and Gemini 3.1 Pro on SWE-Bench Pro and gets close to the top Claude models.

And it does all that at a fraction of the cost. We're talking a different league on price — which means you can run M3 across your whole inbox without watching the meter.

The 1M context window is the part that quietly matters most for Kai: it can hold huge amounts of conversation history, docs, and code context at once, which makes resolutions sharper and handoffs cleaner.

Use it for: your default. High volume, fast responses, long context, great quality, low cost. This is the workhorse.

How to switch

Head to your Kai settings and pick the model per agent. You can mix and match — run M3 as your default and route the heavy hitters to Fable 5. No migration, no downtime, just flip the switch.

As always, more power on autopilot. Questions? Ping us — we read everything.

The Gleap team