#47 GPT-5.6 Luna
medium- Cost
- $0.014
- Time
- 14.6s
- Tokens
- 2,362 tok
OpenAI
Release: 2026-07-09
Tested on: 2026-07-16 22:37
openai/gpt-5.6-luna::medium
~400B total (~17B active)MoEClosedEstimated
Summary
GPT-5.6 Luna scores 7.6 on AI BENCHY and ranks #47. It has 10.0 reliability, a 65.2% pass rate, $0.352 total cost, and 7.28s 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 #18. 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.
7.6
Consistency
9.6
10.0
$0.352
Total Output Tokens
43,679
Total Input Tokens
89,676
Input Price
$1.000 / 1M
Output Price
$6.000 / 1M
Flaky tests
1
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 02:20 Re-test | 7.4 | 10.0 | $0.036 ↓ | Compare | |
| 2026-07-16 22:37 New test added | 7.6 | 10.0 | $0.352 | Current run | |
| 2026-07-09 21:16 Initial run | 7.6 | 10.0 | $0.258 | 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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-07-16 22:37 · New test added | 66/66 attempts | 7.6 | 9.6 | 10.0 | 14/22 | 1 | 43,679 | 89,676 | $0.352 | 7.28s |
| 2026-08-14 02:20 · Re-test | 66/66 attempts | 7.4 | 9.2 | 10.0 | 13/22 | 2 | 44,525 | 89,685 | $0.036 | 7.43s |
| Difference | — | +0.1 | +0.4 | 0.0 | +1 | -1 | -846 | -9 | +$0.317 | -149ms |
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 |
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 | 8.3 | 10.0 | |
| Coding | 5.4 | 7.2 | |
| Combined | 10.0 | 10.0 | |
| Data parsing and extraction | 10.0 | 10.0 | |
| Domain specific | 5.3 | 10.0 | |
| General Intelligence | 5.1 | 10.0 | |
| Instructions following | 9.9 | 10.0 | |
| Puzzle Solving | 7.8 | 10.0 | |
| Tool Calling | 10.0 | 10.0 | |
| Trivia | 3.0 | 10.0 |