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Models2026-06-12 · source-backed
LLM-Stats logged a cluster of coding-model releases on June 12 alone, continuing the month's heavy cadence. Chinese labs keep pushing fast, cheaper, code-specialized checkpoints into the same week as OpenAI's GPT-5.5 family and Google's Gemini 3.1 line. The practical effect: the coding tier is a commodity in motion. Pin a model and re-benchmark monthly, because the leader changes faster than your eval suite.
Each link below shares sources, entities, or timing with this story.
GLM-5.1 from Zhipu AI scored 58.4% on SWE-bench Pro. GPT-5.4 scored 57.7%. Claude Opus 4.6 scored 57.3%. That's the first time an open-weight model has ever topped a major coding benchmark against the best proprietary models. The specs matter. GLM-5.1 is a 754B-parameter mixtu...
Moonshot AI released Kimi K3, a sparse mixture-of-experts activating 16 of 896 experts per token. That's about 1.8% of the pool live at any moment, with a 1M-token context window and native vision. Two new architectural pieces show up: Kimi Delta Attention and Attention Residu...
The assumption that proprietary models own the coding benchmark crown just broke. Moonshot AI's Kimi K2.6 leads on 5 of 8 major agentic coding benchmarks while being the only open-weight model in the top tier. SWE-Bench Pro: 58.6% vs GPT-5.4's 57.7% and Claude Opus 4.6's 53.4%...
Microsoft unveiled MAI-Code-1-Flash at Build, its first model that turns written descriptions into source code for apps and websites, explicitly aimed at lowering developer costs and cutting its dependence on OpenAI (CNBC). Same week, Google pushed Gemini 3.5 Flash to general...
The open-source coding agent space just got its first credible frontrunner. OpenCode, built by Anomaly, launched this week and immediately became the top technical story on Hacker News with 802 points and 359 comments — the kind of signal velocity that separates real developer...
Bloomberg reports Alibaba Cloud launched Tongyi Lingma with four freely-switchable Chinese models (Qwen 3.5, GLM-5, MiniMax M2.5, Kimi K2.5). API pricing at 1/18th of Gemini 3 Pro. At $1.15/month, Chinese AI coding tools are now an order of magnitude cheaper than Western alter...
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