Early Tests: Sonnet 5.5 Matches Opus 5.5 at Half the Price and Much Faster
EricBuess · x · 2026-09-29
Reviewer Matthew Berman, after early hands-on testing, says Claude Sonnet 5.5 is essentially Opus 5.5-level but 50% cheaper and much faster, backing the claim with demo videos including a 3D simulation example. If accurate, mid-tier models now deliver frontier capability at half the cost.
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