High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Search AI tools, categories, and leaderboards
Code Arena records 35,827,928 monthly visits with +19.4% month-over-month growth and Free pricing. HS Code Search (XTransfer) records 649,716 monthly visits with -9.4% growth and Freemium pricing.
Free HS code lookup with customs tariff and declaration guidance
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | arena.ai | xtransfer.com |
| Pricing Model | Free | Freemium |
| Monthly Visits | 35.83M (35,827,928) | 649.72K (649,716) |
| MoM Traffic Delta |
| +5.83M (+19.4%) |
| -67.14K (-9.4%) |
| Primary Market & Share | 🇮🇳 India (13.1%) | 🇨🇳 China (67.7%) |
|---|
| Direct Visits / mo | 24.34M | 299.97K |
|---|
| User Rating | 4.7 | 3.8 |
|---|
| Supported Platforms | Website | Website |
|---|

Battle-test AI coding models side by side
Send the same coding prompt to multiple leading models and compare their generated apps and logic side by side.
Watch models construct web apps and websites live, so you can see process and output, not just the final file.
Projects go beyond one-off snippets, testing how well a model structures components, routes, and styles together.
Track which coding models accumulate the most wins over time to identify consistently strong performers.
Free HS code lookup with customs tariff and declaration guidance
Enter a full HS code, a partial code, or a plain-language product name to find the matching commodity classification.
Browse the official structure from section to chapter, heading, and subheading so you can narrow a broad category down to a specific code.
Lookups surface the tariff rate and declaration elements tied to a classification, the details customs officers actually check.
The classification search works without registration; XTransfer's payment and account products are entirely optional add-ons.
High-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

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A spec-driven AI IDE and agent platform that plans, builds, reviews, and verifies real engineering work.