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.
#1 Overall
Grok 3
86.9 pts
#1 Code Execution
豆包 Pro
92.2 pts
#1 Grounding
grok-3
84.4 pts
Best Value
deepseek-v3
99.7 pts
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
+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
ernie-4
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
Worth reading today — beyond the hype
We only feature content that impacts capability, pricing, stability, or model selection.
Featured
News
YZ Index Major Overhaul: 7 New Models Including GPT-5.5, Claude Opus 4.7, and DeepSeek V4 Launch Simultaneously as 9 Veterans Retire
On May 1, 2026, YZ Index completed its largest evaluation roster update since launch last year, replacing 9 models and introducing 7 new flagships in a single sweep. This generational overhaul reflects the rapid pace of AI industry updates, where the evaluation system now needs to keep up with monthly rather than yearly iterations.
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？
Featured News
OpenAI CEO Sam Altman Faces Backlash with 4.7k Likes: Ethical Crisis of Dishonesty, Poaching, and Safety Lapses?
OpenAI CEO Sam Altman has become the center of controversy after a viral X post compiled accusations of dishonest behavior, poaching talent from competitors, and prioritizing profits over safety, garnering 4.7k likes and igniting debates on AI leadership ethics. This incident underscores internal turmoil at OpenAI and raises questions about its impact on the broader AI industry's future.
Featured News
AI Robots Occupy Over 50% of Internet Traffic: Digital Revolution or Infrastructure Crisis?
In the digital age, internet traffic is undergoing a massive shift, with over 50% of global internet traffic now generated by AI robots according to the latest report from network infrastructure provider Lumen Technologies. This revelation not only highlights the rapid penetration of AI technology but also sparks widespread discussions on network infrastructure capacity and robot management strategies.
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.
The AI world changes daily — you need a reliable source
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