# GPT-5.6 Luna release · 2026-07-09 · snapshot 2026-10-26

Creator: OpenAI · 6 effort levels

| Effort level | Input modalities | Intelligence | Total cost | E2E | On the frontier today | ID |
|---|---|---|---|---|---|---|
| GPT-5.6 Luna (Non-reasoning) | Text, Image | 15.50 | $23.0 | 5.06s | no | `gpt-5-6-luna-non-reasoning` |
| GPT-5.6 Luna (Low) | Text, Image | 21.00 | $27.0 | 5.78s | no | `gpt-5-6-luna-low` |
| GPT-5.6 Luna (Medium) | Text, Image | 25.00 | $44.3 | 6.64s | no | `gpt-5-6-luna-medium` |
| GPT-5.6 Luna (High) | Text, Image | 32.10 | $108 | 16.7s | no | `gpt-5-6-luna-high` |
| GPT-5.6 Luna (Xhigh) | Text, Image | 34.60 | $179 | 45.8s | no | `gpt-5-6-luna-xhigh` |
| GPT-5.6 Luna (Max) | Text, Image | 37.30 | $320 | 124.3s | no | `gpt-5-6-luna` |

## Launch day (2026-07-09)

- Reached the frontier: 6 of 6
- Impact (intelligence × log-cost hypervolume gained): 13.59
- Rank: #1 of 45 releases this past year


> Metrics snapshot: 2026-10-26T21:34:20Z. Intelligence index version: unknown. Release timeline, frontier age, release impact and shakeup cards are reconstructions using one selected snapshot's metrics, not a record of what was known at release. Scores, benchmark cost and derived value may change when the index methodology changes. Source documentation advertises v4.3.2; API correspondence is unverified.