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Meta Internal Coding Bench

We haven't written a description for this benchmark yet; see the card notes below for how each maker ran it.

Your workloadRAG over docs · 12K in · 600 out · 50K requests/mo · 30% cached
  1. 1Muse Spark 1.2 · Metabest value
    70.6%

“Best value”: no other model here reports a higher score at a lower cost for your workload. Scores are self-reported by each maker with different settings, so treat close calls as ties.

How each maker reported it

  • Muse Spark 1.2 launch post charts; Muse Spark 1.2 & Muse Code evaluation methodology

    Values read from Meta's published bar charts. Terminal-Bench 2.1 and DeepSWE v1.1 run each model in its own agent product (Muse Code for 1.2, mini-swe-agent for 1.1, Claude Code, Codex, Grok Build, Antigravity CLI), pass@1 averaged over five attempts, so DeepSWE is not harness-identical to the official leaderboard. Muse Spark at xhigh, Opus 5 and GPT at max, Grok and Gemini at high. The MCP Atlas chart shows Opus 5 at xhigh and omits GPT 5.6 Terra, Grok 4.5 and Gemini 3.6 Flash. Meta Internal Coding Bench is 440 tasks from Meta's own codebase.

Only each model's own maker's number is shown; scores a maker reports for rival models are left out.