Head-to-head
Koinly vs Summ
Koinly leads: the AI models rank it above its rival on 1 of the 1 leaderboard they share. Based on how ChatGPT, Claude, Gemini & Grok rank both across the leaderboard they share — re-polled weekly, reasoning shown verbatim.
| Leaderboard | Koinly | Summ |
|---|---|---|
| Best crypto tax software | #1 / 6 | #2 / 6 |
Why the models rank Koinly — on best crypto tax software
“Best overall balance of accurate reconciliation, broad international tax rules, strong exchange and wallet imports, DeFi/NFT handling, transparent audit reports, and reasonable per-tax-year pricing; assumes a typical investor who may use several platforms but will review flagged transactions.”
Why the models rank Summ — on best crypto tax software
“Tops independent CPA rankings for reconciliation strength, DeFi/on-chain handling (LPs, staking, bridging), cost basis control, and 1099-DA readiness in 2026's broker reporting era; strong automation with manual flexibility for complex portfolios.”
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Ranks from the merged 4-model leaderboards · re-polled weekly · methodology