New Grok Model "Obsidian" Spotted: Likely Grok 4.20 (Beta Tester) on DesignArena
Published:Jan 3, 2026 08:08
•1 min read
•r/singularity
Analysis
The article reports on a new Grok model, codenamed "Obsidian," likely Grok 4.20, based on beta tester feedback. The model is being tested on DesignArena and shows improvements in web design and code generation compared to previous Grok models, particularly Grok 4.1. Testers noted the model's increased verbosity and detail in code output, though it still lags behind models like Opus and Gemini in overall performance. Aesthetics have improved, but some edge fixes were still required. The model's preference for the color red is also mentioned.
Key Takeaways
Reference
“The model seems to be a step up in web design compared to previous Grok models and also it seems less lazy than previous Grok models.”