{
  "schema": "modevc.chart.v1",
  "slug": "best-llm-for-coding",
  "title": "Best LLM for Coding: The Arena Coding Leaderboard",
  "date": "2026-09-09",
  "canonical_url": "https://modevc.com/charts/best-llm-for-coding/",
  "claim": "claude-opus-4-6-high leads Arena coding at 1535. Anthropic has held #1 for 280 days, but Z.ai and Google sit within the interval, 19 points back.",
  "takeaway": "In coding, the lead has lasted 9 months. The challenger is already inside the margin of error.",
  "sources": [
    {
      "name": "Arena leaderboard dataset (lmarena-ai, CC BY 4.0)",
      "url": "https://huggingface.co/datasets/lmarena-ai/leaderboard-dataset"
    },
    {
      "name": "Z.ai GLM-5.3-Flash release note",
      "url": "https://docs.z.ai/guides/vlm/glm-5.3-flash"
    }
  ],
  "data": {
    "type": "hbar",
    "fmt": "pts",
    "labelHead": "Best model (lab)",
    "valueHead": "Points above #50",
    "rows": [
      {
        "label": "claude-opus-4-6-high (Anthropic)",
        "v": 61.5,
        "logo": "si-anthropic"
      },
      {
        "label": "glm-5.3-flash (Z.ai)",
        "v": 42.2,
        "logo": "lh-zai"
      },
      {
        "label": "gemini-3.8-flash-high (Google)",
        "v": 42.1,
        "logo": "si-google"
      },
      {
        "label": "kimi-k3-max (Moonshot)",
        "v": 36.7,
        "logo": "lh-moonshot"
      },
      {
        "label": "mimo-v2.5-pro (Xiaomi)",
        "v": 26.6,
        "logo": "si-xiaomi"
      },
      {
        "label": "qwen3.8-max (Alibaba)",
        "v": 24.5,
        "logo": "si-qwen"
      },
      {
        "label": "muse-spark-1.2 (xHigh) (Meta)",
        "v": 22.3,
        "logo": "si-meta"
      },
      {
        "label": "gpt-5.4-high (OpenAI)",
        "v": 21.5,
        "logo": "lh-openai"
      },
      {
        "label": "ernie-5.1 (Baidu)",
        "v": 14.9,
        "logo": "lh-baidu"
      },
      {
        "label": "amazon-nova-experimental-chat-26-02-10 (Amazon)",
        "v": 11.2,
        "logo": "lh-aws"
      },
      {
        "label": "grok-4.5 (xAI)",
        "v": 8.7,
        "logo": "lh-xai"
      }
    ]
  }
}