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#159

GPT-6 Luna

OpenAI Release: 2026-09-23 Tested on: 2026-09-23 05:09 openai/gpt-6-luna::low
~400B total (~17B active)MoEClosedEstimated

Summary

GPT-6 Luna scores 7.0 on AI BENCHY and ranks #159. It has 9.6 reliability, a 62.1% pass rate, $0.020 total cost, and 21.96s average response time.

What makes GPT-6 Luna unique: It stands out most in Domain specific, where it ranks #2, while Anti-AI Tricks is its weakest area at #14. Its total benchmark cost is unusually low for its score range.

Model facts

Researched on 2026-09-23

Estimated
Parameters
~400B total (~17B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Vendor does not disclose parameter counts or architecture. Low-confidence catalog estimate carries forward the prior openai/gpt-5.6-luna family estimate; the linked announcement establishes identity and availability, not these counts.

Score

7.0

Consistency

8.5

Total Output Tokens

22,605

Total Input Tokens

80,159

Input Price

$0.100 / 1M

Output Price

$0.500 / 1M

Tests Correct

Wrong Tests: 11

Attempt pass rate: 62.1%

Flaky tests

4

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

21.96s

Response Time (max): 89.37s

Response Time (total): 483.19s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#159 GPT-6 Luna

low
Cost
$0.002
Time
19.2s
Tokens
2,598 tok

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 6.9 7.9
Coding 6.0 7.2
Combined 7.3 5.8
Data parsing and extraction 10.0 10.0
Domain specific 5.3 10.0
General Intelligence 4.4 9.9
Instructions following 7.1 5.8
Puzzle Solving 7.7 10.0
Tool Calling 10.0 10.0
Trivia 3.0 10.0

Compared models