Question 1

Fable 5 vs Opus 4.8 — which should I use?

Accepted Answer

Use Claude Fable 5 for the hardest, longest-running agent tasks — it sits above the Opus class, with a 1M-token context and always-on adaptive thinking. Use Opus 4.8 for strong complex reasoning at a lower per-turn cost ($5/$25 vs $10/$50).

Question 2

Is Fable 5 worth the extra cost over Opus 4.8?

Accepted Answer

Fable 5 is priced higher, but for long-horizon, multi-step work it often finishes in fewer turns. For shorter tasks, Opus 4.8 is the more cost-efficient pick.

Flik AI | Claude Fable 5 vs Claude Opus 4.8 — When to Use Each