GPT-4o mini vs GPT-6 Luna
| Spec | GPT-4o mini | GPT-6 Luna |
|---|---|---|
| Respan Index | 10.7 (#157) | 49.2 (#36) |
| Blended price per 1M | $0.262 | $0.1 |
| Context window | 128K | 1.1M |
| Input / output per 1M | $0.15 / $0.6 | $0.05 / $0.25 |
| Max output | 16K | 128K |
| Input | text, vision | text, vision |
| Released | 2024-07-18 | 2026-09-22 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | GPT-4o mini | GPT-6 Luna |
|---|---|---|
| Coding | 0.6 GPT-4o mini | 29.6 GPT-6 Luna |
| Agents | 1.8 GPT-4o mini | 61.2 GPT-6 Luna |
| Reasoning | 17.7 GPT-4o mini | 57.2 GPT-6 Luna |
| Knowledge & language | 8.2 GPT-4o mini | 38.9 GPT-6 Luna |
| Human preference | 32.2 GPT-4o mini | 55.2 GPT-6 Luna |
Benchmarks both report
GPT-6 Luna leads on 7 of the 8 benchmarks both report. Higher is better. Each score links to where it was published.
FAQ
Is GPT-4o mini better than GPT-6 Luna?
GPT-6 Luna scores 49.2 on the Respan Index (#36), ahead of GPT-4o mini at 10.7 (#157). GPT-6 Luna leads on 7 of the 8 benchmarks both report.
Which is cheaper, GPT-4o mini or GPT-6 Luna?
GPT-4o mini lists at $0.15 input and $0.6 output per 1M tokens; GPT-6 Luna at $0.05 and $0.25. GPT-6 Luna is 2.6x cheaper per token at list price.
Which has the larger context window?
GPT-4o mini accepts 128K tokens and GPT-6 Luna 1.1M tokens.