YZ Index — AI Model Benchmarks, News & Research
Editor's Pick
Five things you need to know about AI
At SXSW London last week I gave a talk called “Five things you need to know about AI,” in which I shared what I think are the biggest themes in AI right now. I
2026-06-09 18:00
Anthropic’s Claude Fable 5 is a version of Mythos the public can access today
Anthropic is releasing Claude Fable 5, its first Mythos-class model available to
Anthropic Offers Mythos Upgrade for Cyber Partners and a ‘Safe’ Version for the Rest of You
Anthropic is releasing Claude Mythos 5 to trusted organizations and Claude Fable
Overall Top 5
Full Rankings →
#1
Grok 4 89.9
▲11.5
·
#2
Claude Opus 4.7 89
▲10.2
·
#3
豆包 Pro 88.8
▲10
·
#4
Claude Sonnet 4.6 87.2
▲9.2
·
#5
Gemini 2.5 Pro 86.4
▲7.4
·
#6
Qwen3 Max 86.2
▲8.5
·
#7
Gemini 3.1 Pro 84.8
▲7.7
·
#8
DeepSeek V4 Pro 83.3
▲6.4
·
#9
GPT-o3 82.8
▲6.9
·
#10
GPT-5.5 80.9
▲2.7
·
#11
文心一言 4.5 76.9
▲15.2
·
▲ Qwen3 Max +80.9 · ▼ DeepSeek V3 -75.1
·
#1
Grok 4 89.9
▲11.5
·
#2
Claude Opus 4.7 89
▲10.2
·
#3
豆包 Pro 88.8
▲10
·
#4
Claude Sonnet 4.6 87.2
▲9.2
·
#5
Gemini 2.5 Pro 86.4
▲7.4
·
#6
Qwen3 Max 86.2
▲8.5
·
#7
Gemini 3.1 Pro 84.8
▲7.7
·
#8
DeepSeek V4 Pro 83.3
▲6.4
·
#9
GPT-o3 82.8
▲6.9
·
#10
GPT-5.5 80.9
▲2.7
·
#11
文心一言 4.5 76.9
▲15.2
·
▲ Qwen3 Max +80.9 · ▼ DeepSeek V3 -75.1
·
Latest News
View All News →It’s not FAANG anymore. It’s MANGOS.
With SpaceX, Anthropic, and OpenAI all eyeing massive public debuts, the tech industry may soon have a new class of corp
Anthropic’s Claude Fable 5 is a version of Mythos the public can access today
Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardr
Anthropic Offers Mythos Upgrade for Cyber Partners and a ‘Safe’ Version for the Rest of You
Anthropic is releasing Claude Mythos 5 to trusted organizations and Claude Fable 5 to the public, a version it says can’
Apple WWDC 2026: Gemini-Powered Siri Debuts, On-Device AI Reshapes Intelligent Ecosystem
At WWDC 2026, Apple announced Gemini-powered Siri and a multi-model Apple Intelligence architecture, marking a major bre
OpenAI Secretly Files IPO, AI Giant's Listing Wave Sparks Market Controversy
OpenAI has quietly submitted an IPO filing to the SEC, signaling accelerated commercialization, while its affiliated com
NVIDIA and Hyundai Deepen AI Collaboration, Accelerating Commercialization of Embodied Intelligent Robots
NVIDIA CEO Jensen Huang recently met with Hyundai Motor Group executives to deepen cooperation in AI applications across
Moonshot AI Launches $2 Billion Funding Round, Valuation Eyes $30 Billion
Chinese AI startup Moonshot AI has announced a new funding round targeting $2 billion, which would boost its valuation t
Anthropic Launches Claude Fable 5, Performance Greatly Improved Based on Mythos Architecture
Anthropic recently unveiled the new Claude Fable 5 model, built on the Mythos underlying architecture, marking another m
How an e-scooter founder raised $5 million to build space data centers
Orbital founder Euwyn Poon built 250,000 scooters at Spin. Now he wants to launch 10,000 space data centers.
The Download: whole-body rejuvenation drugs and five things to know about AI
This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going o
Lovable says it has hit $500M in annualized revenue, with 1 million new projects a week
Lovable says it has now surpassed $500 million in annualized run-rate revenue and its users are building businesses and
Apple says its AI is still private, even when it's running on Google's servers
Some models run in Google's cloud, but without giving Google any kind of access.
Reviews
View All →Smoke Daily: GPT-5.5 tops with 92.58 points, material constraint gap of 19 points decides the outcome
Smoke's latest data shows that code execution is no longer the dividing line, and material constraints have become the r
11 Models Answer Same Blame-Shifting Problem: 8 Get A>B>D>C, 3 Get 0 Points Directly
11 mainstream models showed significant divergence on the same engineering judgment question: 8 models output A>B>D>C an
Binary Tree Serialization Test: 11 Models, 7 Full Scores, 4 Directly Zero
In a strict binary tree serialization test requiring only code output, explicit null node markers, and stable results, 7
WDCD Compliance
#1
Claude Opus 4.7
70
#2
GPT-5.5
70
#3
GPT-o3
70
#4
Claude Sonnet 4.6
67.5
#5
Gemini 2.5 Pro
67.5
#6
豆包 Pro
62.5
#7
Gemini 3.1 Pro
62.5
View full compliance rankings →
Research Lab
3 Major Models Translation Showdown: Week 24 Quality Evaluation, passthrough Leads with a Score of 9
This week, <strong>2425</strong> translation tasks were completed by <strong>3</strong> models. <str
WDCD Run #146: Average Instruction Decay Hits 24.7% Across 11 Models, Claude Opus 4.7 and GPT-5.5 Tie at Top
WDCD Run #146 (2026-06-03) tested 11 frontier models on multi-turn commitment integrity, recording a
3 Major Model Translation Showdown: Week 23 Quality Evaluation, gpt-o3 Leads with a Score of 9
This week, 270 translation tasks were completed by 3 models. Two samples were selected for multi-mod