GPT-6 Luna vs JT-4.1 Flash 236B A21B: Release Comparison
Comparison of the GPT-6 Luna and JT-4.1 Flash 236B A21B 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-6 Luna scores highest: GPT-6 Luna (max) at 37, against JT-4.1 Flash 236B A21B at 34 for JT-4.1 Flash 236B A21B.
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost per Task (USD, Log Scale)
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indexes
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-6 Luna (max) |  OpenAI | 37 | 39 | 45 | 39 | 37 | 37 | 45 | $0.07 | $0.1 | $0.10 | $0.50 | $0.01 | $122 | 50k | 39k | 145M | 145 | 110.48s | 110.48s | 113.93s | 345.76s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |  | |
| JT-4.1 Flash 236B A21B |  China Mobile | 34 | 40 | 41 | 44 | - | 36 | 47 | - | - | - | - | - | - | 86k | 54k | 185M | - | - | - | - | - | 236B 21B active at inference time | 262k | Jul 2026 | - | Yes | Supports: text | Supports: text | Not available | - | - | |
| GPT-6 Luna (xhigh) | OpenAI | 34 | 37 | 42 | 37 | - | 33 | 41 | $0.04 | $0.1 | $0.10 | $0.50 | $0.01 | $67 | 27k | 19k | 69M | 131 | 18.33s | 18.33s | 22.14s | 206.11s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (high) | OpenAI | 32 | 36 | 41 | 35 | - | 32 | 40 | $0.03 | $0.1 | $0.10 | $0.50 | $0.01 | $48 | 20k | 13k | 47M | 125 | 12.96s | 12.96s | 16.96s | 157.21s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (medium) | OpenAI | 29 | 32 | 37 | 33 | - | 29 | 37 | $0.02 | $0.1 | $0.10 | $0.50 | $0.01 | $31 | 11k | 6k | 29M | - | - | - | - | - | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| JT-4.1 Flash 236B A21B (non-reasoning) | China Mobile | 27 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 236B 21B active at inference time | 256k | Jul 2026 | - | No | Supports: text and image | Supports: text | Not available | - | - | |
| GPT-6 Luna (low) | OpenAI | 21 | 24 | 22 | 25 | - | 23 | 30 | $0.0045 | $0.1 | $0.10 | $0.50 | $0.01 | $11 | 2k | 517 | 8M | 124 | 2.00s | 2.00s | 6.02s | 16.57s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (Non-reasoning) | OpenAI | 18 | 20 | 20 | 19 | - | 21 | 24 | $0.01 | $0.1 | $0.10 | $0.50 | $0.01 | $19 | 4k | 0 | 7M | 139 | 0.79s | 0.79s | 4.38s | 26.98s | - | 1M | Sep 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |