GPT-5.6 Luna vs Qwen3.5 4B: Release Comparison
Comparison of the GPT-5.6 Luna and Qwen3.5 4B releases: 6 and 2 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 8 models.
- For intelligence, GPT-5.6 Luna scores highest: GPT-5.6 Luna (max) at 38, against Qwen3.5 4B (Reasoning) at 13 for Qwen3.5 4B.
- For output speed, GPT-5.6 Luna is fastest: GPT-5.6 Luna (max) at 120 t/s, against Qwen3.5 4B (Reasoning) at 36 t/s for Qwen3.5 4B.
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indices
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench v4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-5.6 Luna (max) |  OpenAI | 38 | - | - | - | - | 36 | 43 | $0.18 | $0.2 | $0.20 | $1.20 | $0.02 | $320 | 41k | 28k | 154M | 120 | 128.28s | 128.28s | 132.46s | 355.87s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |  | |
| GPT-5.6 Luna (xhigh) | OpenAI | 35 | 38 | 41 | 35 | 33 | 34 | 41 | $0.09 | $0.2 | $0.20 | $1.20 | $0.02 | $179 | 24k | 15k | 85M | 117 | 52.08s | 52.08s | 56.37s | 203.53s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |  | |
| GPT-5.6 Luna (high) | OpenAI | 32 | 35 | 37 | 33 | 30 | 32 | 38 | $0.04 | $0.2 | $0.20 | $1.20 | $0.02 | $108 | 14k | 7k | 50M | 103 | 8.68s | 8.68s | 13.52s | 134.67s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-5.6 Luna (medium) | OpenAI | 25 | 28 | 29 | 28 | 25 | 27 | 32 | $0.02 | $0.2 | $0.20 | $1.20 | $0.02 | $44 | 4k | 2k | 18M | 108 | 2.86s | 2.86s | 7.48s | 42.35s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-5.6 Luna (low) | OpenAI | 22 | 24 | 23 | 25 | 21 | 23 | 29 | $0.01 | $0.2 | $0.20 | $1.20 | $0.02 | $27 | 3k | 559 | 10M | 102 | 2.21s | 2.21s | 7.11s | 24.41s | - | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-5.6 Luna (Non-reasoning) | OpenAI | 17 | - | - | - | - | - | 22 | - | $0.2 | $0.20 | $1.20 | $0.02 | - | - | - | - | 109 | 0.93s | 0.93s | 5.52s | - | - | 1M | Jul 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |
| Qwen3.5 4B (Reasoning) |  Alibaba | 13 | - | - | - | - | - | - | - | $0.0 | $0.03 | $0.15 | - | - | - | - | - | 36 | 0.70s | 56.36s | 70.28s | - | 4.7B | 262k | Mar 2026 | - | Yes | Supports: text, image, and video | Supports: text |  | |||
| Qwen3.5 4B (Non-reasoning) | Alibaba | 11 | - | - | - | - | - | - | - | $0.0 | $0.03 | $0.15 | - | - | - | - | - | 25 | 0.69s | 0.69s | 20.41s | - | 4.7B | 262k | Mar 2026 | - | No | Supports: text, image, and video | Supports: text | | |||