Is Claude Opus 4.8 Fast or Claude Fable 5 cheaper?

Claude Opus 4.8 Fast and Claude Fable 5 have comparable output pricing.

Which has the larger context window, Claude Opus 4.8 Fast or Claude Fable 5?

Both models offer a similar context window.

Claude Opus 4.8 Fast vs Claude Fable 5

Both have similar output pricing. Choose Claude Opus 4.8 Fast or Claude Fable 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Opus 4.8 Fast	Claude Fable 5
Provider	Venice AI	Venice AI
Input / 1M tokens	$12.00	$12.00
Output / 1M tokens	$60.00	$60.00
Context window	1M	1M
Parameters	—	—
Open weights	No	No
Released	May 2026	Jun 2026

Claude Opus 4.8 Fast details →Claude Fable 5 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.