Claude Sonnet 5 vs Claude Opus 4.8

Per-platform pricing

Both models tracked across official and reseller platforms. Lowest input price wins on cost-sensitive workloads.

Frequently asked questions

Which is cheaper, Claude Sonnet 5 or Claude Opus 4.8?

Claude Sonnet 5 is +150% cheaper than Claude Opus 4.8 on input tokens ($2.00 vs $5.00 per 1M). On output, Claude Sonnet 5 also wins ($10.00 vs $25.00).

Where does this comparison data come from?

ModelPriceLab crawls official vendor pricing pages and verified third-party platforms daily. Both Claude Sonnet 5 and Claude Opus 4.8 are tracked on the same schedule.

Can I get notified when either price changes?

Yes — Pro subscribers receive email alerts when input or output prices change for any tracked model.