#221 GPT-5.6 Luna
none- Cost
- $0.016
- Time
- 15.8s
- Tokens
- 2,685 tok
OpenAI
Release: 2026-07-09
Tested on: 2026-08-14 02:19
openai/gpt-5.6-luna::none
~400B total (~17B active)MoEClosedEstimated
Summary
GPT-5.6 Luna scores 5.4 on AI BENCHY and ranks #221. It has 10.0 reliability, a 36.4% pass rate, $0.029 total cost, and 1.50s average response time.
What makes GPT-5.6 Luna unique: It stands out most in Instructions following, where it ranks #3, while Coding is its weakest area at #12. It is notably fast compared with similar models.
Model facts
Researched on 2026-08-12
- 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 the architecture or count.
5.4
Consistency
8.8
10.0
Total Output Tokens
6,709
Total Input Tokens
101,332
Input Price
$0.200 / 1M
Output Price
$1.200 / 1M
Flaky tests
3
Flaky tests had mixed outcomes across runs (at least one pass and one fail).
Hamster playing table tennis
Prompt: Create a detailed SVG illustration of a hamster playing table tennis.
Run history
| Tested on | Score | Reliability | Tests Correct | Total Cost | Compare |
|---|---|---|---|---|---|
| 2026-08-14 02:19 Re-test | 5.4 | 10.0 | $0.015 ↓ | Current run | |
| 2026-07-16 22:36 New test added | 5.4 | 10.0 | $0.142 | Compare | |
| 2026-07-09 21:15 Initial run | 5.3 | 10.0 | $0.047 | Compare |
This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.
Run comparison
| Run | Benchmark coverage | Score | Consistency | Reliability | Tests Correct | Flaky tests | Total Output Tokens | Total Input Tokens | Total Cost | Response Time (avg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-14 02:19 · Current run | 66/66 attempts | 5.4 | 8.8 | 10.0 | 6/22 | 3 | 6,709 | 101,332 | $0.029 | 1.50s |
| 2026-07-16 22:36 · New test added | 66/66 attempts | 5.4 | 8.8 | 10.0 | 6/22 | 3 | 6,709 | 101,323 | $0.142 | 1.50s |
| Difference | — | 0.0 | 0.0 | 0.0 | 0 | 0 | 0 | +9 | -$0.114 | +6ms |
These two runs used different benchmark suites, so the deltas reflect both model changes and suite changes.
Price History
Historical pricing data for this model from OpenRouter.
| Date | Input Price | Output Price |
|---|---|---|
| 2026-07-09 21:18 | $1.000 / 1M | $6.000 / 1M |
| 2026-07-28 08:40 | $0.500 / 1M | $3.000 / 1M |
| 2026-07-31 10:14 | $0.100 / 1M | $0.601 / 1M |
| 2026-08-14 12:51 | $0.100 / 1M | $0.600 / 1M |
| 2026-08-20 12:51 | $0.200 / 1M | $1.200 / 1M |
Charts
Choose the first model, then click a second model to open a side-by-side page.
Top Models by Score
Score vs Total Cost
Response Time (avg)
Score vs Response Time (avg)
Total Output Tokens
Score vs Total Output Tokens
Quick Compare
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Category Breakdown
| Category | Score | Consistency | Tests Correct |
|---|---|---|---|
| Anti-AI Tricks | 4.8 | 10.0 | |
| Coding | 3.8 | 7.2 | |
| Combined | 3.2 | 9.1 | |
| Data parsing and extraction | 10.0 | 10.0 | |
| Domain specific | 3.6 | 7.2 | |
| General Intelligence | 5.0 | 10.0 | |
| Instructions following | 7.1 | 5.8 | |
| Puzzle Solving | 5.3 | 10.0 | |
| Tool Calling | 10.0 | 10.0 | |
| Trivia | 3.0 | 10.0 |