Question 1

Opus 5 vs Opus 4.8 — which should I use?

Accepted Answer

Both bill at the same rate ($5 / $25 per MTok), so Opus 5 — the newer generation, tuned for complex agentic coding and enterprise work with adaptive thinking on by default — is the usual pick. Choose Opus 4.8 if a workflow was tuned against it and you want identical behavior.

Question 2

Does Opus 5 cost more than Opus 4.8 in Flik AI?

Accepted Answer

No — both are 50 credits per million input tokens (5 cached) and 250 credits per million output tokens. Upgrading generations doesn't change your per-turn cost.

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