YZ Index · AI Model Change Intelligence

Which AI model should you use today?
We benchmark them every week.

11 models · 212 questions randomly sampled · Real code execution · Citation verification · Rolling average rankings · Don't trust press releases, check continuous performance.

Code Sandbox Execution Citation Accuracy Check Statistical Significance Ranking No Vendor Sponsorship
Who to Use Right Now
#1 Overall (Rolling Average) Grok 3
Biggest Rise This Week 文心一言 4.0 +15
Latest Benchmark 2026-04-27 SGT
judge v6

Who to Use Right Now

Start with the overall ranking, then drill into the dimension you care about.

The full leaderboard shows not just who's leading, but how stable that lead is. View Full Leaderboard

Who's Up, Who's Down

One-time spikes don't count. We care about whether sustained performance has shifted.

Biggest change this week: 文心一言 4.0 rose 15 pts。
View Full Change Report
Biggest Gain
文心一言 4.0
+15
Incident Reports
This week 2 incidents
Pricing Changes
0 updates

Don't just look at the overall score — consider your use case

Top Pick
豆包 Pro
92.2 pts
Runner-up
Gemini 2.5 Pro
89.4 pts
Third Choice
Grok 3
88.9 pts
Top Pick
Gemini 2.5 Pro
47.2 pts
Runner-up
Claude Opus 4.6
46.3 pts
Third Choice
豆包 Pro
46.3 pts
Top Pick
Grok 3
84.4 pts
Runner-up
Claude Sonnet 4.6
81.1 pts
Third Choice
Claude Opus 4.6
79.7 pts
Top Pick
DeepSeek V3
99.7 pts
Runner-up
文心一言 4.0
98.5 pts
Third Choice
豆包 Pro
93 pts
Top Pick
豆包 Pro
38.9 pts
Runner-up
Gemini 2.5 Pro
36.6 pts
Third Choice
Claude Opus 4.6
36.6 pts

View Full Recommendations by Use Case

Worth reading today — beyond the hype

We only feature content that impacts capability, pricing, stability, or model selection.

Featured
News
Musk and Page's AI Safety Dispute: When "Speciesism" Becomes a Point of Divergence for Tech Giants
In recent OpenAI-related court proceedings, Elon Musk revealed that Google co-founder Larry Page labeled him a "speciesist" for his AI safety concerns, highlighting a fundamental ideological divide between the two tech giants. This disclosure has sparked intense discussions on the future direction of AI development, pitting human-centric safety against views of AI as an independent evolutionary form.
Featured
News
Apple iOS 27 Heavyweight Preview: AI Photo Editing Features Fully Revolutionized, Challenging Android's Dominant Position
Apple is set to introduce groundbreaking AI photo editing features in iOS 27 and macOS 27, offering users advanced image processing capabilities like smart expansion, AI enhancement, and image reconstruction, all powered by Apple Intelligence with on-device processing for privacy. This move aims to counter Android's lead in AI photography and reshape the market competition.
Featured
News
当机器人迎来ChatGPT时刻,别忘了这些钳子
从分拣鸡块到拧灯泡,Eka公司的机器人表现出了惊人的逼真度。但这是否意味着它们真正拥有了物理智能?本文深入探讨了机器人技术的最新突破,以及这些“灵巧钳子”如何预示着一个新时代的到来——当机器人学会像人类一样感知和操作世界时,我们该如何理解这种“智能”的本质?
News
NVIDIA Opens Free API for 80 AI Models, Igniting Developer Frenzy: Giant's Concession or Ecosystem Strategy?
NVIDIA's move to provide free API access to over 80 AI models through a single OpenAI-compatible endpoint has sparked excitement in the developer community, potentially lowering barriers to AI development and accelerating innovation. However, this strategy may serve deeper commercial purposes, such as building an ecosystem moat and collecting valuable data for hardware optimization.
News
Meta商业AI每周处理千万次对话
Meta近日宣布,其商业AI工具每周已能处理超过1000万次对话,且超过80亿广告主已使用其生成式AI工具。这一数据标志着Meta在AI商业化领域取得重大突破,但也引发了对AI对话质量与隐私保护的讨论。本文将深入分析Meta AI的发展现状、行业影响及未来挑战。
News
北极冰层历史探秘:人形机器人数据新纪元
本篇文章编译自MIT Technology Review,探讨了北极冰层历史研究的突破性进展以及人形机器人数据收集的革新。过去,抵达北极需要穿越数米厚的冰层,充满艰险。如今,科研船通过先进技术,从古老冰芯中挖掘气候变迁的线索。同时,人形机器人正以前所未有的精度收集数据,为人工智能和自动化领域注入新动力。本文深度解析这两大前沿科技趋势,揭示它们如何重塑我们对地球和未来的理解。

Not all AI news is worth reading. What matters is what changes your judgment. View All News

Why This Leaderboard Is Worth Your Attention

Not because we're loud, but because our methods are open, rules are fixed, and results are traceable.

Real Code Execution
Looking like it can code isn't enough. We run the code in a sandbox. If it doesn't pass, it's zero.
Citation Verification
For long-document questions, we don't just check if the answer looks right — we verify citations trace back to the source.
Statistical Rankings
We don't judge on a single run. Rankings are based on rolling averages, avoiding luck-driven fluctuations.
No Sponsored Benchmarks
No co-evaluations, no pre-test consultations, no favoritism. Whatever the results are, that's what we publish.

View Methodology

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