Claude Opus 5.5 and what to use instead
For spreadsheets and formulas, Claude Opus 5.5 scores 100 and costs $10.80 per 1,000 formulas. Here’s what beats it on price, on quality, or on privacy.
Cheaper at similar quality
At least 30% cheaper and within 5 points.
Nothing we track fits this today.
Better at a similar price
At least 5 points stronger and no more than 20% dearer.
Nothing we track fits this today.
Open weights you can host
Ranked by value: quality for the money.
DeepSeek V4.1 Flash 1017DeepSeek · open weightsAbout 93% cheaper per formula, and 26 points weaker.$0.72 per 1,000 formulas · score 74Compare side by side →
GLM-5.3-FlashZ.ai · open weightsAbout 97% cheaper per formula, and 31 points weaker.$0.33 per 1,000 formulas · score 69Compare side by side →
Kimi K3Moonshot AI · open weightsAbout 25% cheaper per formula, and 26 points weaker.$8.10 per 1,000 formulas · score 74Compare side by side →
Scores are provisional (Arena and Epoch AI) and prices are list prices. Rankings never take money into account. Thresholds are in the methodology.