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
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
Worth reading today — beyond the hype
We only feature content that impacts capability, pricing, stability, or model selection.
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.
Featured News
Behind the AI Funding Frenzy: Is the Trillion-Dollar Valuation a Technological Breakthrough or a Capital Illusion?
According to reports, Anthropic, the developer of Claude, has achieved a $1 trillion valuation in its latest funding round, setting a record in the AI field and sparking shock in the investment community due to extreme optimism about advanced AI technology. However, the undisclosed details of investors and terms raise concerns about the reasonableness of this high valuation and potential bubble risks.
Featured News
DeepSeek Releases 1.6 Trillion Parameter Open-Source Model Supporting Huawei Chips, API Pricing Only 1/20 of GPT-4 Triggering Global AI Price War
According to the latest news on X platform and verified by Google, Chinese AI startup DeepSeek officially released the V4 series open-source large models in December 2024, including the 1.6 trillion parameter V4-Pro and the 284 billion parameter V4-Flash versions. This release is seen as a milestone in China's construction of an independent AI technology stack, not only benchmarking international top models in technical indicators but also triggering a price war in the global AI service market with its highly disruptive pricing strategy.
Featured News
OpenAI Releases GPT-5.5 'SPUD': Transition from Conversational AI to Autonomous Agents, Achieving 85% Human Level in Multi-Step Tasks
OpenAI has officially released the GPT-5.5 'SPUD' model, described as a "new type of intelligence," marking a significant shift from conversational interactions to task-executing agents. It achieves 85% human-level performance in multi-step workflows, greatly reducing the need for manual intervention.
Featured News
OpenAI Partners with Qualcomm to Develop AI Phone: Mass Production in 2028 to Challenge iPhone, Replacing App Ecosystem with AI Agents
According to analyst Ming-Chi Kuo, OpenAI is collaborating with Qualcomm and MediaTek to develop custom smartphone processors and with Luxshare for design and manufacturing, aiming for mass production in 2028. This move signifies AI giants extending from software services to hardware, with the phone featuring an AI agent system to replace traditional apps.
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.
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