Anthropic Claude Opus 4.8 vs Anthropic Claude Sonnet 5 — Pricing & API Comparison
Side-by-side · API pricing
Claude Opus 4.8 vs Claude Sonnet 5
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).
Both models tracked across official and reseller platforms. Lowest input price wins on cost-sensitive workloads.
Claude Opus 4.8
direct$5.00 / $25.00
Claude Sonnet 5
direct$2.00 / $10.00
Frequently asked questions
Which is cheaper, Claude Opus 4.8 or Claude Sonnet 5?
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 Opus 4.8 and Claude Sonnet 5 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.
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