GLM 5.2 vs Claude Opus 4.8: I Ran 5 Build Tests (China Won 4) + The Catch

The video compares China’s new GLM 5.2 (by ZAI, released June 13, 2026) against Anthropic’s Claude Opus 4.8 (released May 28) using the same five build prompts. GLM 5.2 produces better results in four tests—a running game, an Apple-style landing page, a liquid-sloshing animation, and a neon arcade game—while Claude wins the fifth test with a cleaner moving solar system map. The script highlights pricing differences (Claude’s per-token API costs vs GLM’s flat monthly coding plan) and argues the best approach is to run both: use GLM for cheap “building” tasks and Claude for deeper thinking inside a unified “agent operating system.” It notes key catches: no independent benchmarks yet, and GLM’s API/chatbot/open weights are coming next week.

00:00 GLM vs Claude Setup
01:28 Build Test 1 Runner Game
02:01 Build Test 2 Landing Page
02:26 Build Tests 3 and 4 Animations
03:48 Test 5 and Price Shock
04:54 Stop Picking Sides
05:26 Agent OS Workflow
07:01 The Catch and Missing Proof
08:14 Agent OS Offer Break
09:13 Daily Business Use Example
11:13 Why Agents Beat Model Chasing
12:28 Final Verdict Run Both