GPT-6 Luna

ARC Prize Verified
OpenAI·Sep 22, 2026·12 harness configurations·$0.10 input / $0.50 output per 1M tokens

GPT-6 Luna's best semi-private scores are 86.7% on v1 and 59.3% on v2, both at max reasoning. On v3, it reaches 0.2% with the Standard harness at medium reasoning and 0.6% with the Provider Adapter harness at max reasoning.

ARC-AGI 3 leaderboard

GPT-6 LunaGPT-6 Luna - Provider Adapter

Verified scores

VariantARC-AGI-1ARC-AGI-2ARC-AGI-3(Standard harness)ARC-AGI-3(Provider Adapter harness)
Max
86.7%
59.3%
0.1%
0.6%
XHigh
73.0%
41.9%
0.2%
0.5%
High
70.3%
31.4%
0.2%
0.4%
Medium
61.0%
18.1%
0.2%
0.3%
Low
37.7%
4.6%
0.0%
0.2%
None
8.8%
0.0%
0.0%
0.0%

Tasks & environments

Pass/fail per reasoning level across each benchmark.

ARC-AGI-3 Public Demo - Standard harness

25 environments

ARC-AGI-3 Public Demo - Provider Adapter harness

25 environments

ARC-AGI-2 Public Eval

120 tasks
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ARC-AGI-1 Public Eval

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