Jason Sun

Muse Spark 1.1 by @AIatMeta lands in the Agent Arena, marking the introduction of Meta to the leaderboard at #5 across all labs (and #17 on the model leaderboard). Congrats to @AIatMeta on its initial entry into Agent Arena!

Exciting news: @OpenAI’s GPT-5.6-sol is now joint #1 in the Code Arena: Frontend, matching Claude Fable 5! This marks the first time an OpenAI model has reached the top spot in Code Arena, demonstrating major gains in agentic coding, frontend and web app development. Highlights: - Significant improvement from GPT-5.5-xhigh (#18 -> #1) - #1 in Data & Analytics, Brand Marketing, Consumer product, and Gaming - Priced at $5/$30 per million input/output tokens - roughly 2× cheaper than Claude Fable 5 Huge congrats to the @OpenAI team for this incredible milestone!

Big news: Grok-4.5 has landed #3 in the Code Arena: Frontend. - On par with GLM-5.2 (Max) and Claude Opus 4.8 (Thinking) - Significant improvement over Grok-4.3 (#62 -> #3) - #2 for Content Creation Tools, Simulations, Gaming and Reference-Based Design - #3 for Consumer Product Congrats to @SpaceXAI, now in the #3 spot in Code Arena: Frontend!

GLM 5.2 x AWS GLM-5.2 is accessible via Z.ai GLM API on AWS Marketplace 🚀 Powerful long-horizon autonomous workflows, top-tier coding & multi-step agent reasoning capability, delivered through a single unified API endpoint. Integrate seamlessly within your AWS cloud without self-host GPU maintenance. aws.amazon.com/marketplace/pp… #GLM52 #ZhipuAI #AWSMarketplace #EnterpriseLLM

Exciting news: GLM-5.2 (Max) ranks #2 in Code Arena: Frontend, with +29pt over Claude Opus 4.7 (Thinking) and only behind Fable 5! GLM-5.2 is the best open model vs Kimi-K2.6 and Minimax-M3 by a large margin. - #2 React and #4 HTML sub-leaderboards - Ranks as the top model in nearly all sub categories: Brand & Marketing, Reference-Based Design, Data & Analytics, Consumer Product, Gaming, and Simulations. Congrats @Zai_org for the incredible milestone!

Introducing GLM-5.2: Frontier Intelligence, Open Weights - Significant improvements in coding and agentic tasks - Strong long-horizon capabilities with a 1M context window - Two levels of reasoning effort: GLM-5.2 (max) pushes the limits, while GLM-5.2 (high) strikes a strong balance between performance and token efficiency - MIT-licensed open weights - Same API pricing as GLM-5.1 Tech Blog: z.ai/blog/glm-5.2 Weights: huggingface.co/zai-org/GLM-5.2 API: docs.z.ai/guides/llm/glm… Coding Plan: z.ai/subscribe Chat: chat.z.ai

Exciting news - DeepSeek V4 Pro is in the Arena with 1.6T parameters (49B activated) alongside V4 Flash at 284B parameters (13B activated). Both support 1M token context. It’s a major leap over DeepSeek V3.2! Code Arena: - DeepSeek V4 Pro (thinking): #3 open model (#14 overall), on par with GPT-5.4-high and Gemini-3.1-Pro in agentic webdev tasks Text Arena: - DeepSeek V4 Pro (thinking): #2 open model (#14 overall), matching Kimi-2.6 - DeepSeek V4 Flash (thinking): #10 open model (#47 overall) Competition at the top of the open model leaderboards keeps heating up. Huge congrats to @DeepSeek_AI on the strong comeback!