Claude Opus 4.6

{
  "id": "anthropic/claude-opus-4-6",
  "name": "Claude Opus 4.6",
  "description": "High-end Claude for difficult coding, planning, and slower expert reasoning",
  "family": "claude-opus",
  "last_updated": "2026-03-13",
  "knowledge": "2025-05-31",
  "attachment": true,
  "reasoning": true,
  "tool_call": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text",
      "image",
      "pdf"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 1000000,
    "output": 128000
  },
  "benchmarks": [
    {
      "name": "SWE-Bench Pro",
      "score": 51.9,
      "source": "https://labs.scale.com/leaderboard/swe_bench_pro_public",
      "metric": "resolve rate",
      "dataset": "public"
    },
    {
      "name": "SWE-Atlas Codebase QnA",
      "score": 33.3,
      "source": "https://labs.scale.com/leaderboard/sweatlas-qna",
      "metric": "score",
      "harness": "Claude Code"
    },
    {
      "name": "SWE-Atlas Codebase QnA",
      "score": 30,
      "source": "https://labs.scale.com/leaderboard/sweatlas-qna",
      "metric": "score",
      "harness": "Mini-SWE-Agent"
    },
    {
      "name": "SWE-Atlas Refactoring",
      "score": 35.58,
      "source": "https://labs.scale.com/leaderboard/sweatlas-refactoring",
      "metric": "score",
      "harness": "Claude Code"
    },
    {
      "name": "SWE-Atlas Test Writing",
      "score": 36.67,
      "source": "https://labs.scale.com/leaderboard/sweatlas-tw",
      "metric": "score",
      "harness": "Claude Code"
    },
    {
      "name": "SWE-Atlas Test Writing",
      "score": 36.08,
      "source": "https://labs.scale.com/leaderboard/sweatlas-tw",
      "metric": "score",
      "harness": "Mini-SWE-Agent"
    },
    {
      "name": "Artificial Analysis Coding Agent Index",
      "score": 51.3,
      "source": "https://artificialanalysis.ai/agents/coding-agents",
      "metric": "average pass@1",
      "harness": "Claude Code",
      "variant": "medium"
    },
    {
      "name": "SWE-Atlas Codebase QnA",
      "score": 71.9,
      "source": "https://artificialanalysis.ai/agents/coding-agents",
      "metric": "pass@1",
      "harness": "Claude Code",
      "variant": "medium"
    },
    {
      "name": "SWE-Bench Pro",
      "score": 11.8,
      "source": "https://artificialanalysis.ai/agents/coding-agents",
      "metric": "pass@1",
      "harness": "Claude Code",
      "variant": "medium",
      "dataset": "hard-aa"
    },
    {
      "name": "Terminal-Bench",
      "score": 70.2,
      "source": "https://artificialanalysis.ai/agents/coding-agents",
      "metric": "pass@1",
      "harness": "Claude Code",
      "variant": "medium",
      "version": "2.1"
    }
  ],
  "release_date": "2026-02-05",
  "open_weights": false
}