ARC Prize Verified

GPT-5.6 Luna 2026-07-30

OpenAI·Jul 30, 2026·6 reasoning variants

On July 30, 2026, OpenAI announced an 80% price reduction for GPT-5.6 Luna. At max reasoning effort under the new pricing, Luna scores 90.7% on ARC-AGI-1 Semi-Private at $0.07/task and 59.6% on ARC-AGI-2 Semi-Private at $0.18/task. These results are comparable to Luna's earlier evaluations before the price reduction.

ARC-AGI 2 leaderboard

GPT-5.6 Luna 2026-07-30

Verified scores

VariantARC-AGI-1ARC-AGI-2ARC-AGI-3
Max
90.7%
59.6%
XHigh
85.0%
43.5%
High
78.0%
33.3%
Medium
54.0%
7.4%
Low
39.5%
3.6%
None
3.3%
0.8%

Tasks & environments

Pass/fail per reasoning level across each benchmark.

ARC-AGI-2 Public Eval

120 tasks
Task
Max
XHigh
High
Medium
Low
None

ARC-AGI-1 Public Eval

400 tasks
Task
Max
XHigh
High
Medium
Low
None